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June 2015 Issue 9 Useof Ad-mixturesin CONCRETE HIGHLIGHTS HIGHLIGHTS Tech Talk The Visionary Speaks In conversation with Dr. J.D. Bapat
June 2015 Issue 9
Use�of�Ad-mixtures�in�CONCRETE
H I G H L I G H T SH I G H L I G H T S
Tech Talk
The Visionary SpeaksIn conversation with
Dr. J.D. Bapat
Its time once again to put on your thinking caps and get
ready to participate in the contest. Send "BIG IDEAS" in your entries for the below mentioned topic related to the next issue's theme and the best contribution will be featured in the next issue of New Horizons as well as win you exciting prizes! So get inking!
Topic "Innovations in Concrete"
the writer in you!Discover
Last date of submission of entries is 10th November, 2015Please submit your entries to [email protected]; [email protected]
At Product Application Seminars we interact with groups of Architects/ Engineers & Industrial Consumers for imparting information on
innovative and new applications of our products. We work with them jointly to integrate these applications into their projects.
PASProduct Application Seminars
Program at PuneExecutives Present:Mr. Umesh Udavant (CTS) Mr. Niraj Kumar (Marketing)M/s Agarwal Traders (Stockist)
Program at DhangarhiExecutives Present:
Mr. Rameshwar Singh (CTS) Mr. S. Rathi (Stockist)
Mr. Santosh Kumar (SSA)
Editor’s Desk
C O N T E N T S
Editorial Board:
Nitish ChopraHead (Branding & Communication)
ShivapriyaSr. Officer (Branding)
Alok TiwariOfficer (CTS)
For any feedback, inputs and suggestions please contact: [email protected]
Dear Friends & Colleagues,
Your continued support and encouragement for New
Horizons has been a great source of inspiration. We
appreciate the enthusiasm we have received that has
made this venture a huge success.
In this edition's cover story, we share invaluable insights
of Mr. Jayant D. Bapat, a TUV certified CDM Expert in
Energy and Environment for Cement Sector. I am sure
we shall be enriched by his experience, earned over
40 years of teaching, research, training and consultancy
in various aspects of building materials. The issue also
recounts the various activities conducted by the CTS in
this quarter.
Other highlights in this issue include the relevant articles
and write-ups submitted by our executives. Our theme
for this issue is “Uses of Admixture in Concrete”. As
always, the entire Technical Services community has
provided us with an overwhelming and laudable
response.
I sincerely hope you appreciate the effort that has gone
into putting together this issue of New Horizons and that it
continues to engage you. I look forward to your continued
participation and positive feedback.
Best regards,
Rana Pratap Singh
Head - Customer Technical Services
J u n e - 2 0 1 5
PAS 2
SDA 4-5
CSW 6-7
MM 8
Exhibitions 10-11
CSA/ASA & DOA 13
Interview with Dr. J.D. Bapat 14-17
Big Ideas - Winning Entry 18-19
CSM 20-22
PTW & SST 23
Grey Cement North Marketing 25
Contacts
Grey Cement South Marketing 26
Contacts
White Cement Marketing 27
Contacts
CTS Executives Contacts 28
Tech-Talk 9, 12, 24
In a Stockist & Dealer Awareness program basic information about our products, literature, packaging & trade policies is
conveyed to our registered dealers & stockists.
Program at LakhimpurExecutives Present: Rajesh Mishra (CTS)Mr. Gaurav Dhawan, Mr. Neeraj Awasthi,
Mr. Vipin Sharma & Mr. Arpan Singh (Marketing)M/s Adishakti Traders (Stockist)
Stockist & Dealer Awareness Program
Program at GandhinagarExecutives Present:Mr. Nirmal Sharma (CTS)Mr. Kamlesh, Mr. Laxman, Mr. Gaurav Mathur (Marketing)
Program at HyderabadExecutives Present:
Mr. D. Sai Samba Siva Rao, Mr. V.B. Nijampure (CTS)Mr. K. Basawaraj, Mr. P. Suman Kumar (Marketing)
M/s. A.K. Traders (Stockist)
Program at MaduraiExecutives Present: Mr. C. Thiyagu (CTS)
Mr. Mansoor, Mr. Baburaj (Marketing)
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Program at NizamabadExecutives Present:
Mr. V.B. Nijampure, D. Sai Samba Siva Rao (CTS)Mr. K. Basawaraj (A.S.M)
Mr. T.V. Ramana Rao, Mr. Y.V. Ramakrishna Reddy (Marketing)Mr. N. Santosh Reddy (Stockist)
SDA
Program at MehsanaExecutives Present:Mr. Pulin Mistry (CTS)Mr. Narendra Rohella, Mr. Vatsal Doshi (Marketing)M/s Chirag Marketing (Dealer)Mr. Shirish Patel (BO)
Program at TirupathiExecutives Present:
Mr. A. Venkateswarlu (CTS)Mr. Philips Sukumar, Mr. V. Umashankar (Marketing)
Program at MysoreExecutives Present:
Mr. P.S. Punneshetty, Mr. Jaisimha (CTS)Mr. Bhaskar Reddy, Mr. Sridhar,
Mr. Jayachandra (Marketing)
J u n e - 2 0 1 5
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Interactions with groups of small to medium size Contractors & their Supervisor's is organised for
their skill development
Program at BhubaneshwarExecutives Present:
Mr. Rameshwar Singh, Mr. Pradeep Kumar Barik (CTS)Mr. Mukesh Agrawall (Stockist)
Mr. Santosh Mishra (SSA)
Program at ArmoorExecutives Present:Mr. D. Sai Samba Siva Rao (CTS)Mr. Y.V. Ramakrishna Reddy (SSA)Mr. K. Basawaraj (A.S.M)M/s. Sri Venkateswara Paints (Stockist)
Program at BengaluruExecutives Present:
Mr. P.S. Punneshetty (CTS)Mr. Anil (Marketing)
Contractor’s and Supervisor's Workshop
Program at Natham, DindugalExecutives Present:
Mr. C. Thiyagu (CTS)Mr. Victor (Marketing)
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Program at Sawai MadhopurExecutives Present:Mr. Vikas Sharma (CTS)Mr. Nadeem Ahmed (Marketing)
Program at SiliguriExecutives Present:
Mr. Subendhu Das (CTS) Mr. R. Chatterjee, Mr. P. Roy,
Mr. K. Barman (Marketing)
CSW
Program at West DelhiExecutives Present:
Mr Rakesh Kumar Singh (CTS)Mr. Neeraj Singh, Mr. Abishek Pathak (Marketing)
J u n e - 2 0 1 5
News Clipping At Nangal Dam
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Program at Mega MM LALSOT - DausaExecutives Present:Mr. Pushpendra Singh (CTS)Mr. Sandeep Verma, Mr. Mahaveer Singh (Marketing)
Program at Kota Executives Present:
Mr. Vikas Sharma (CTS)Mr. Deeraj Sharma (Marketing)
Program at Harohalli Executives Present:
Mr. P.S. Punneshetty (CTS) Mr. Yogesh (Marketing)
Program at Nuh, MewatExecutives Present:
Mr. Himanshu Choudhary (CTS)Mr. Deepak Mishra (Marketing)
Masons’ Meets are conducted for masons across the Country for knowledge transfer of specialized applications related to
construction activities
Masons MeetMM
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Tech Talk
LACK OF STRENGTH — There is no specifications outlining the ideal hardness or strength of plaster and there is no reliable way of measuring. Evalution is often carried out by scratching the surface with a hard sharp object as a screw-driver or a key. It is often better to have a slightly weaker plaster that is less likely to show significant cracking or de-bounding than one that is too strong. Very week plaster is often unable to resist impact and has reduced resistance to water penetration (nails will tend to fall out).
GINNING — Ginning is the term given to the appearance of a plastered wall when the positions of the mortar joints are clearly visible through the plaster. It is caused by the difference between the masonry units and the mortar.
EXPANSION — Expansion includes swelling, softening layer cracking and spalling of the plaster. it is usually caused by the inclusion of proprietary gypsum –based products in the mix. Under moist conditions the sulphate from the gypsum reacts with the Portland cement paste and forms compounds of increased volume which disrupt the plaster.
POPPING — Pop outs are conical fragments that break out of the surface of the plaster leaving holes that vary in size. They are caused by the presence of impurities in the mix which .reacting with the moisture in the mix, expand and cause cavities in the plaster. These impurities are usually in the form of shales, seeds other organic material or particles of dead burnt lime.
Mr. Sunil KumarCTS, Ranchi
Defects in Plastering, frequently noticed fall into the following categories.-
1) Structural cracks
2) Non-structural cracks
3) Peeling out(de-bounding)
4) Lack of strength
5) Ginning
6) Expansion
7) Popping
STRUCTURAL CRACKS---Some cracks in plaster may be the result of cracks in the walls. The causes for these cracks are:-
a) Differential settlement of the foundation
b) Moisture expansion or drying shrinkage of masonry
c) Thermal expansion of the roof
d) Structural failure of a structure
Structural cracks often from in straight vertical or horizontal lines. Also in stepped diagonal lines, and may be quite unsightly, the cracks width will often vary with seasons. As these cracks originate in the wall and not in the plaster, repairing the plaster is rendered ineffective. Such measure may be including structural alterations that change cracks into the movement joints.
NON STRUCTURAL CRACKS—non structural cracks usually develop in the form of a network of fine cracks. Usually in a polygonal pattern, which may measure between 5-75 mm across each polygon? These are very fine and shallow and do not extend through the whole depth of plaster. These cracks are formed as a result of over trowel ling or by use of sand containing excessive amount of fines /dust silt(more than 15%in a mass passing 0.075 mm sieve).This may occur within a few hours of plaster being applied to the wall.
MAP CRACKING—these cracks are similar to nonstructural cracks and often look like map. Maps cracks are usually formed when the plaster mix has high cement content, or if the plaster is uncured or improperly cured.
Lack of protection of walls from elements such as sun and wind, resulting in evaporation.
Insufficient wetting of bricks leads to walls absorbing excess water
Use of badly graded sand with an insufficient amount of fine material.
Plastic shrinkage cracking-- cracking which appears as a result of an excessive loss of water from the plaster during the initial hours after applications is known as a plastic shrinkage cracking. Map cracking is often a result of plastic shrinkage as well.
PEELING OUT (DE-BOUNDING)—Plaster gets peeled off from the wall because the outside layer that is exposed to air sinks at a different rate from the plaster in contact with the wall.
Defects in Plastering
J u n e - 2 0 1 5
Peeling is generally the result of inadequate preparation of the substance – it is therefore important to make sure that the bond between the plaster and the wall is as strong as possible. This can be achieved by —
1) Clearing the walls thoroughly ensuring that they are free from dirt, dust and oily substance.
2) Using a cement slurry coat before plastering
3) Moistening the walls to archive the correct moisture content.
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Exhibitions
We participate in exhibitions held at national and state level, to showcase our products. Not only does it help in enhancing the
brand visibility but also helps us in interacting with specifiers and customers.
Allahabad Architech AssociationExecutives Present:Mr. Mr Ashish Shrivastava (CTS)
Hotel Holiday Inn, Aerocity, New DelhiExecutives Present:
Mr. Alok Tiwari, Mr. Rohit Kapoor, Mr. Anuj Kumar (CTS)
Buysell Interaction Pvt LtdExecutives Present:
Mr. P.S. Punneshetty (CTS) Mr. Yogesh (Marketing)
Build Construct India Show Case, BegaluruExecutives Present:
Mr. Pulin Mistry (CTS)Mr. S.C. Shukla (Marketing)
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EXH, CON – MAT-2015, HUBLI 2nd - 5th April, 2015
Executives Present: Mr. Sanjeev Ganiger (CTS)
Mr. Arun Patil (DMO)Mr. Vipul Ladwa (MT)
Concrete Show India 2015, Mumbai07.05.2015 to 09.05.2015 Executives Present:Mr. R.P. Singh (Head – CTS)Mr. Umesh Udavant (CTS)
Smart Cities India 2015Executives Present:
Mr. Vikrant Tata, Mr. Anuj Kumar Singh (CTS)Mr. Rahim (Applicator)
GEC Exhibition, GoaExecutives Present:
Mr. Gopal Ramesh Joshi (CTS)
Exhibitions
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J u n e - 2 0 1 5
Tech Talk
Due to lack of awareness the maximum no of people are not using waterproofing compound at the time of constructing their houses. But the cost of waterproofing is not more than 1 % of the total cost of building.
It is very important to use various type of waterproofing compound at various stages of building or as per the requirement. Otherwise the result of effect of seepage / leakage is known to us.
1) Integral waterproofing: this is most common and useful waterproofing compound. It has 2 forms – liquid & powder. Most popular is liquid form for its easy use. It is used when water is mixed with dry mortar to make concrete and plaster. It reduce the w/c ratio and increase the workability. It also reduces the porosity of concrete / plaster and reduces the chances of leakage / seepage. This product should be used be used from foundation to roof or in other way we can say it should be used whenever cement is using to constructing a building. The dosage of integral waterproofing is 2 % of weight of cement..
3) Grouting: this is very important waterproofing category. If water is leaking from slab / concrete wall / brick wall (only for rising damp) then we can do the grouting application. In this method only need to cut a hole (at 30 degree angel) into the slab / wall and depth of the hole must not exit 2/3 of slab / wall thickness. Then fix the nozzle into the hole. And the depth of the nozzle must not exit the 2/3 length of hole. After that the grouting material (cement base / epoxy base/ foam base .etc ) should be send through that nozzle by pressure grouting machine. The grouting material sealsthe entire hole. This is only the method by which waterproofing treatment can be done from negative sides.
4) Membrane: this is very costly material but effectiveness is very high. It can be applied on terrace, swimming pole .etc. It is applied by torch application. Before that a prescribes primer should be applied on the surface. There are two type of app membrane (fiber glass and polyester base) and it contain 5 layers.
5) Sealant : there are many types of sealant - (i) silicon sealant -- which is used to fix two glass. (ii) poly sulphide sealant – which is used to seal the expansion joint of the building. (iii) another type sealant is used in between basin and wall , at skirting- in between tiles and wall joint etc…
Above mentioned products are mainly used for waterproofing the building. Apart from these there are so many products which are used for waterproofing at special cases.
Before ending the most important things i want to say that before using any waterproof compound the surface should be clean, repaired strong enough and structurally perfect otherwise waterproofing compound will not get success after its application.
Mr. R.B. PankajCTS, Patna
Waterproofing - To make a building leak free
2) Coating: in this category there are various type of product - acrylic polymer base / S.B.R. Polymer base / bituminous base etc. This category product should be used at (i) on D.P.C. coarse (ii) bathroom floor & wall (iii) terrace (iv) walls (v) on basement as a protective coat, etc. This type of products can be two component or one component and should mixed with cement , water with prescribe ratio. The dry film thickness of the coating various from 350 micron to 1000 micron.
This type of coating should be covered by plaster/ screeding to protect from UV rays and physical damages. So preferably it should be used before plaster / screeding.
There is another kind of coating which are not required to cover by plaster / screeding. It can be used directly on the plaster surface / slab surface of out side wall of roof after applying a prescribes primer. These are washable coating.
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Civil Engineering & Architecture Students' Awareness ProgrammeLectures & exhibitions are conducted for Civil Engineering students on cement, its applications & technical problems encountered in construction to enable them to appreciate field situation. Similar lectures and exhibitions are also organized for students of Architecture emphasizing on special skills needed to do such architectural jobs which would be beneficial in their work later.
CSA/ASA
Program at J.K. College of Architecture, DindugalExecutives Present:Mr. Thiyagu, Mr. Elamvaluthio (CTS) Mr. Mansoor, Mr. Victor (Marketing)
Program at BATHINDAExecutives Present:
Mr. Dinesh Sharma (CTS)Mr. Arun Goyal - H.O.D. Civil Deptt.
Mr. Des Raj & Mrs. Sarabjeet Kaur - Lect. Civil Deptt.
J u n e - 2 0 1 5
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Trained & experienced application Engineers/ Supervisors/ Masons/ Painters demonstrate specialised applications of our products to
customers during this activity.
DOADemonstration of Application
Program at GuduvancherryExecutives Present: Mr. R. Ramesh (CTS) Mr. Manikanan (Marketing)
Program at GuntoorExecutives Present :
Mr. S.K. Rehman Raja (CTS)
The Visionary Speaks In conversation with Dr. J. D. BAPAT
Q1) Please throw some light on the early days of your career. How is experience as a consultant with different companies?
When I started my career at the National Council for Cement and Building Materials (NCB, then Cement Research Institute of India (CRI)), in 1975, I was a young postgraduate engineer from Indian Institute of Science. Later I got the opportunity to complete Ph. D. studies at IIT, Delhi. The CRI, a vibrant organisation, gave me enough opportunities to work in different areas of cement manufacturing, namely product iv i ty e n h a n c e m e n t , environment and energy conservation, materials handling, training and so on. In that period (1975-91) I visited nearly two dozen cement plants, while working on different projects. Later I joined W a l c h a n d n a g a r Industries Ltd. (WIL) and w o r k e d i n c e m e n t division (1991-94). WIL is o n e o f t h e m a j o r suppliers of cement machinery. I got the hands-on experience in the process design of modern cement plants, including the costing of machinery. I entered into consultancy area, when I joined the University of Pune, as Professor and later worked as Principal of Engineering Colleges (1994-2011). The beginning was made with Grasim Cement (now Ultra Tech), when as a technical expert, I was a part of the techno-marketing team of the leading cement brands of the Company. The next was my association with Indo Rama Cement. I was with them when they started manufacturing blast furnace slag cement at their newly commissioned 1MTPA plant nearPen (Raigad, Maharashtra). The assignment involved innovative work, like product development. I also extensively travelled
Jayant D. Bapat. is an independent professional consultant for cement manufacturing and concrete. A B.Tech, M.E., Ph.D. (IIT, Delhi), he is a TUV certified CDM Expert in Energy and Environment for Cement Sector.
Earlier (1994-2011) he was a faculty, Director and Principal at the engineering colleges affiliated to the University of Pune (India). He also worked at senior positions at the National Council for Cement and Building materials (NCB) (1975-1991), New Delhi and Walchandnagar Industries Ltd. (WIL) (1991-1994), Walchandnagar. WIL is a leading cement machinery manufacturer. He has 40 years of teaching, research, training and consultancy experience. His long standing expertise lies in the areas of cement manufacturing, durability of concrete and utilization of industrial and
agricultural wastes in building materials.He has been distinguished as among "Top 100 Engineers 2012" and "International Engineer of the Year 2012",
by the International Biographical Centre, Cambridge, England. His book, “Mineral Admixtures in Cement and Concrete” was published by CRC Press, USA, in August 2012.
Mumbai and Gujarat area, developing the core customer base for the Company. In that period, I got opportunity to interact with luminaries of concrete technology, such as P K Mehta, Mohan Malhotra, JanBijen. I worked on one research project (funded by Mehta Foundation) on developing dry lean concrete (DLC) using high volume of lagoon ash, for road construction. The work was subsequently published in the Journal of American Society of Civil Engineers (ASCE). I also worked with TUV on couple of projects and got certified as CDM
Exper t i n Energy and Environment for Cement Sector.
As an outcome of the experience gained in cement and construction industry, I also published a book on “Mineral Admixtures in Cement and Concrete”, with CRC Press, USA. I was honoured as among "Top 100 Engineers 2012" and "International Engineer of the Year 2012", by the International Biographical Centre, Cambridge, England.
Since 2011, I am working as Independent Professional Consul tant for Cement
Manufacturing and Concrete. I also offer training courses for professionals working in cement and construction industry, in India and abroad. I have successfully offered such courses jointly with Indian Concrete Institute (ICI) in India and with professional organisations in other countries.
It has been a very exciting and enigmatic journey, till date.
Q2) Kindly share your views on environmentally friendly construction/ green architecture?
Ideally, green or sustainable construction or architecture refers to structure that is designed, built, maintained,
Dr J D Bapat With Participants Of Professional Training Course Organised At Iknowledge, Kuala Lumpur, Malaysia
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The commonly observed processes that are responsible, individually or together, for the deterioration of concrete are carbonation, alkali aggregate reaction (AAR), chloride initiated corrosion of reinforcement, sulfate attack, decalcification or leaching and frost or freeze–thaw action. It is generally accepted that under the optimum conditions of effective blending of components, transportation, placing, and curing, the addition of mineral admixtures to concrete improves its resistance toward the deteriorating agents.
When mineral admixtures, such as fly ash (FA) or blast furnace slag (BFS) are used, the strength of concrete can be considered as a result of three principal factors, first accounting for the reduction in the quantity of cement (dilution), second heterogeneous nucleation (physical) and third pozzolanic reaction (chemical). The net result is higher long-term strength and durability of the structure.
The structures satisfying the requirement of cost, service life, strength and durability require the use high performance concrete (HPC). Judicious choice of chemical and mineral admixtures reduces the cement content and that results in economical HPC.
The carbonation refers to the precipitation of calcite (CaCO ) as well as other CO -based solid phases, 3 2
through the reaction of penetrating atmospheric CO2
with the calcium ions in the pore solution. The main consequence of carbonation is the drop in the pH of the pore solution of concrete so that the passive layer that usually covers and protects the reinforcing steel against corrosion becomes unstable. The continuous diffusion of CO inside concrete may also lead to decomposition of 2
calcium silicate hydrate (C-S-H), the principal strength giving phase in concrete. The consequences are loss of strength, shrinkage, cracking and increase in the porosity of concrete. In concrete with mineral admixture, where the amount of calcium hydroxide (CH) is reduced due to pozzolanic or cementitious reaction, the carbonation is dependent on permeability and the resultant lower permeability hinders the ingress of CO .2
The aggregate containing certain dolomitic or siliceous minerals react with soluble alkalies in concrete and sometimes result in detrimental expansion, cracking and the premature loss of serviceability of concrete structures affected. This phenomenon is known as alkali aggregate reaction or AAR. All kinds of concrete structures may be affected, although structures in direct contact with water, such as dams and bridges, are particularly susceptible to AAR. The mineral admixtures replacing cement, such as BFS and FA, mitigate or eliminate AAR in concrete.
Under marine conditions, chloride ions penetrate through porous concrete and build up around the reinforcement and the alkalinity (pH) of the surrounding pore solution falls substantially. At that stage, the protective ironoxide film around reinforcing bars depassivates and cracks, exposing the steel. The exposed steel gets corroded in the presence of water and oxygen, resulting in the formation of expansive corrosion products (rust) that occupy several times the volume of the original steel consumed. The expansive corrosion products create tensile stresses on the concrete surrounding the corroding steel reinforcing bar, leading to cracking and spalling of concrete cover. The addition of FA and BFS to concrete inhibits corrosion of reinforcement, improving the resistance toward chloride penetration and
renovated, operated or used in an environmentally friendly and resource-efficient manner. Green structures are designed to meet certain objectives such as protecting occupants' health and improving productivity, using resources such as materials, energy, water more efficiently and reducing overall impact on the environment. That means, for cement and construction industry, using minimum quantity of clinker while making cement, replacing it with the mineral admixtures and using optimum quantity of cement and other materials to achieve desired concrete strength and durability.
Q3) What is the significance of Customer Technical Services Division in Cement Industry?
In the modern consumer-driven cement market, technical services division, catering to the users, is an essential requirement. All modern cement companies have fully functional technical services department, supported by qualified engineers who visit and interact with the customers to assess their needs and accordingly advise them about the best construction practices so that the dream of a strong and durable construction is realised. The services of the technical service engineers can be availed by all users. Some of the customer-centric initiatives taken up by the Technical Services Division are:
· Customized solutions to the problems of the individual home builder.
· Training the masons and contractors in good construction practices.
· Train the channel partners (dealers and retailers) about the product and its correct usage.
· Interact periodically with the professionals (architects and engineers) and share information regarding latest developments in the product and the industry.
· Training if technical service engineers in modern cement, concrete and construction practices.
Many cement companies maintain mobile testing vans. The vans are generally equipped to carry out strength and workability tests on concrete. The grading and quality of the aggregates used in concrete can also be tested. The services of such mobile van are meant primarily to assist the customer in making good concrete for any application, like foundations, beams, columns, lintels, slabs and so on.
The Technical Services Division also provides assistance in advanced areas, especially to the core customers, like:
· Formulating mix design
· Developing trial mix designs and adjustment of concrete proportions
· Tests and analysis in laboratory and at the construction sites
· Updated information on current standards
Q4) What are the key characteristics of Fly Ash and Slag based cement in terms of durability and performance?
The strength and durability of concrete structure must go hand in hand. Durability is the ability of a structure to resist weathering action, chemical attack and abrasion, while maintaining minimum strength and other desired engineering properties. In today's context, designing for strength and durability is synonymous to designing for sustainability.
J u n e - 2 0 1 5
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reducing the quantity of free (soluble) chloride in concrete. Besides delaying the initiation, the corrosion propagation period is also extended.
The deterioration of concrete due to external sulfate attack is a commonly observed phenomenon, when structures are exposed to sulfate solutions or built in sulfate bearing soil and/or ground water. All commonly obtained water soluble sulfates are deleterious (Mg > Na > Ca) to concrete, but the effect is severe when it is associated with Mg cations. The concrete with mineral admixtures, exposed to Na SO environment, in general, 2 4
shows lower expansion. It is attributed to the lower content of CH and the formation of secondary C-S-Hdue to pozzolanic/ cementitious reactions, with the addition of FA and BFS. The lower availability of CH inhardened concrete is believed to create a negative effect, during magnesium sulfate attack. However, that is often offset by the reduced permeability and densification caused by the use of mineral admixtures.
The decalcification or leaching process is usually described by the dissolution of CH (also called portlandite) and C-S-H in hydrated cement systems exposed to water. It results in surface deposits of CaCO , 3
termed efflorescence, and secondary precipitations of monosulfate, ettringite and calcite, deep within concrete. The efflorescence or surface deposits develop on new constructions with Portland cement concrete and on masonry units, including bricks and tiles, which have been bonded with Portland cement. It is normally not damaging but aesthetically undesirable. It has negative effect on the compressive strength of concrete. The use of mineral admixtures, combined with adequate curing, decreases the permeability of concrete andreduces leaching and decalcification. It is relevant to hydraulic structures, such as dams and radioactive disposal facilities, wherein long-term stability must be guaranteed.
Q5) What is the future of blended cement i.e fly ash and slag based cement in India?
Currently blended cement comprises more than 75% of the total cement produced in India. As I foresee, the rising trend of blended cement share will continue. The likely future developments could be increase in the replacement of cement with FA and BFS, using advanced processing techniques; application of Portland limestone cement; greater application of high volume fly ash concrete, due its high corrosion resistance
The consumption of cement is an indicator of the progress of country. The cement industry in India has undergone a paradigm shift after total decontrol of cement, nearly 25 years back. The most significant aspect of this change is the shift in consumer preference from 'high strength' to 'high performance' or durable concrete, which was prompted by greater quality awareness among the consumers and high cost of structural repairs. General improvement in the quality of was achieved through greater use of mineral admixtures, which are industrial wastes, namely fly ash and blast furnace slag, in cement and concrete. The national standards and the codes of practice have also been revised and supported the change. The greater use of industrial wastes as mineral admixtures has led the cement and construction industry in India on the path of sustainable development. I was, in a way, witness to this significant change.
Q6) Does the color of cement play any role in the quality of cement? How should we clarify the customer doubts regarding the same?
It is usually important for the customer that the color of cement remains uniform. It should be noted that the color of the cement or concrete is not indicative of its strength.
Cement essentially consists off our mineral phases: two calcium silicates, a calcium aluminate and a mixed crystal known as tetra calcium aluminoferrite (C AF). While the 4
first three appear as pure white minerals, pure C AF has a 4
brown color due to its iron content. Thus theoretically, p u r e c e m e n t w o u l d b e b r o w n . H o w e v e r the mineral phases in cement are not absolutely pure. C AF is usually contaminated with magnesium. The 4
quantity is small but it is sufficient enough to partially replace their on and calcium in C AF.These low levels of 4
magnesium give cement its characteristic greenish-gray color. Considering the clinker burning conditions in rotary kiln are good, Portland cement gets dark or light gray color when iron content is high or low respectively. Other major components in cement may also influence the shade of gray.
Blended cement is produced, replacing Portland cement with FA (Portland Pozzolana cement or PPC) or BFS (Portland slag cement or PSC). In FA also, the color is likely due to the presence of iron compounds. It may e x h i b i t brown or bluish gray t o g r a y c o l o r depending upon the valency of i r o n present in the mineral p h a s e s . When BFS is ground w h i l e b l e n d i n g (ground granulated blast furnace slag or GGBS), it may appear off-white or lighter in color, in comparison to cement. Thus Portland cement blended with mineral admixture partially acquires the color of admixture, depending upon the level of replacement.
Q7) In what ways can construction and demolition waste be reused in construction, in India?
The construction and demolition waste (C&Dwaste), a major portion of all generated solid waste, can be used as recycled concrete aggregate (RCA) substituting natural aggregate.
The recycled aggregate is crushed and stored in open for considerable period, before use. Such aggregate can be considered as a carbon dioxide sink, as it undergoes carbonation reaction, absorbing carbon dioxide from the atmosphere. As per the Environmental Protection Agency (EPA), USA, estimate, in the year 2003, U.S. produced 164×109 t building related waste, of which 9% was construction waste, 38% was renovation waste and 53% was demolition debris. Some American states estimate a saving of 50%–60% from the use of recycled
Ground Granulated Blast Furnace Slag (ggbs)
16
aggregate versus fresh aggregate, taking into consideration the savings from disposal costs and potential road damage from the transport of fresh or waste material. It should be noted that the quality of RCA affects the quality of fresh and hardened concrete. The RCA may usually contain many contaminants such as metal, asphalt, organics, glass, ceramics, plaster, drywall (gypsum) board, roofing materials, sealants and wood. It is desirable to use only controlled quality RCA in construction. The performance of such concrete can be improved, partially replacing cement with mineral admixtures, like FA and BFS.
The Fig. – 3 shows center runway at Seattle-Tacoma International Airport (USA) under reconstruction.
About 250,000 m2 of concrete from the existing runway is being recycled and crushed on site into gravel that will be used as the sub-base for the new runway, taxiways and shoulders. The life span of the reconstructed runway is estimated at 40 years. The work is expected to be completed in October 2015.
Q8) How do you weigh the requirement of skilled technical manpower for cement industry, in the coming years?
In view of the planned capacity expansion, it is projected, cement industry will employ about 620x103 personnel by the year 2018. I have given my views on the skilled manpower in an interview for a Feature published by the Indian Cement Review [6]. I feel cement industry offers challenging opportunities for skilled technical manpower. Some of the areas where such challenges lie are:
(a) Process optimisation and modernisation: The benefits include reduction in GHG (greenhouse gas) emissions, savings in energy consumption, increased
production, steady operation (less wear and tear), consistent product quality. The areas open for optimization and modernisation are quarry, alternate fuels and raw materials, raw mix design, grinding of raw meal, coal and cement, pyro-processing, automation and logistics.
(b) Technical services and marketing: The cement producers will have to face customers who are increasingly getting conscious about the strength and durability of concrete and the overall carbon footprint of the construction project. The product (cement) will have to be developed understanding what the concrete needs. The technical service engineers and the construction professionals will have to be trained in proper application of mineral and chemical admixtures in cement and concrete. I think the future urban development and infrastructure projects shall encourage application of HPC for specific requirements and cement and the admixtures will have to satisfy the need.
Q9) As an independent consultant do you see any radical changes in cement industry?
I consider both cement and construction industry together. I do not expect any radical change in the cement manufacturing process, in the foreseeable future. I mean, there will be no significant change in the raw materials and cement will be produced by rotary kiln process. We will see greater substitution of mineral coal as the fuel for clinker burning, with biomass and industrial waste-based fuels. Renewable energy may also find an application. The level of replacement of cement with mineral admixtures, in concrete, is likely to increase. However cement, together with the mineral admixtures, shall remain the binder material in concrete.
Center Runway at Seattle-tacoma International Airport (USA) Under Reconstruction
J u n e - 2 0 1 5
17
Big IdeasWinning Entry
An admixture is defined as the fifth ingredient of a concrete mix which is being used to modify the properties of mix in fresh and hardened state .It is added during the mixing process of concrete in the form of chemical and mineral identities. It redefines the mix properties by physical and chemical reaction.
Why admixture is used in concrete?
It is used to modify certain properties of concrete in the fresh/ plastic state which are as below.
i) To Increase workability.ii) To reduce water content up to 5% to 10 %.iii) To accelerate or retard the setting time. iv) To reduce or prevent settlement. v) To arrest /reduce bleeding.
Use of Admixture in Concrete
vi) To reduce segregation and increase cohesiveness. vii) To improve pump ability. viii) To reduce slump loss/modify slump retention time.
In the harden state admixture is used to modify the following properties
i) To retard or reduce heat produced during early hardening of cement.
ii) To accelerate strength development at early ages iii) To increase durability by decreasing the permeability.iv) To control expansion due to alkali –aggregate reaction.v) To counter freeze & thaw phenomenon.
Admixture is two types such as:
a) Chemical admixtureb) Mineral admixture
Some generally used Chemical admixtures are as below:
1) Air Entraining Admixtures : It is used to purposely introduce and stabilize microscopic air bubbles in concrete as a result air entrainment will dramatically improve the durability of concrete exposed to cycles of freezing and thawing .Entrained air greatly improves concrete's resistant to surface scaling caused by chemical de-icers. The primary ingredients used in air entraining admixture are salts of wood resin, synthetic detergents, and salts of petroleum acids.
What is Admixture:-
Admixture is an ingredient other than cement, sand, aggregate and water that is to be added in concrete before or during mixing to enhance the quality of concrete to meet desired requirement or to serve the specified purpose.
Usages of the admixture are as follows:
· To increase the workability of concrete, or to increase pumping capacity of concrete to higher heights, for e.g. P l a s t i c i z e r s , S u p e r p last ic izers, Workabi l i ty agents.
· To control the setting time of cement means to increase or to decrease the setting time of concrete, for e.g. Retarders or accelerators
· Reducing bleeding, decreasing permeability, permits reduction in water content, reduces cement content, heat of hydration for e.g. Air Entraining Admixtures.
· Reducing alkali-aggregate reaction, lowers thermal
shrinkage for e.g. Pozzolonic or mineral admixture, Alkali-Aggregate Expansion Inhibiting Admixtures.
· Damproof ing or waterproof ing purposes, to fill the capillary pores in concrete so as to obtain higher impermeability.
· To reduce the weight of the concrete for e.g. Gas forming admixture.
· To dissipate the excess of air or other gases for e.g. Air Detraining admixtures.
· Grouting purpose also the admixtures are used for e.g. Accelerators, Retarders, Gas forming agents, Workability agents, Plasticizers.
· To avoid corrosion in reinforced steel in concrete for e.g. corrosion inhibitors
like sodium nitrate, calcium nitrate.
· To resist fungal, germicidal affects on concrete for e.g. Polyhalogenated phenols.
· To color the concrete for e.g. Metallic oxides, Mineral Pigments.
Mr. Atul WairagadeCTS, Pune
18
2) Water Reducing Admixture: This type of admixtures is used to reduce the quantity of mixing water required to produce concrete of a certain slump, reduce the water cementing materials ratio, reduce cement content or increase slump. Typical water reducers reduce the water content by approximately 5% to 10%. The effectiveness of water reducers on concrete is a function of their chemical composition ,concrete temperature, cement composition and fineness, cement content and the presence of other admixtures.
3) Super plasticizer (High-range water reducers): These admixtures are added to concrete with a low –to -normal slump and water cementing materials ratio to make high slump flowing concrete. The effectiveness of the plasticizer is increased with an increasing amount of cement and fines in the concretes.
4) Retarding Admixtures: It is used to retard the rate of setting of concrete at high temperature of fresh concrete (30 C or More).One of the most practical method of counteracting this effect is to reduce the temperature of the concrete by cooling the mixing water or the aggregate .The bleeding rate and capacity of plastic concrete is increased with retarder. The typical materials used as retarder are LIGNIN, BORAX, SUGARS, and TARTARIC ACID AND SALTS. Retarders are used to offset the accelerating effect of hot weather on the setting of concrete, also it delay the initial set of concrete when difficult or unusual condition of placement occurs.
5) Accelerating Admixtures: This admixture is used to accelerate strength development of concrete at an early age. Typical material are like calcium chloride, Triethanolamine, Calcium formate, calcium nitrate, calcium nitrite.
Winners1st Runner Up
Mr. Sunil Kumar - CTS, Ranchi2nd Runner Up
Mr. Nilanjan Bhattacharya - CTS, Guwahati
Mr. S Santosh Kumar - CTS, Bengaluru
Mr. Rameshwar Singh - CTS, Patna
Mr. A. Vamsikrishna - CTS, Vizag
Mr. Bharatesh Jakkanavar - CTS, Belgaum
Other Participants
6) Corrosion Inhibitor: The corrosion inhibiting admixtures chemically arrest the corrosion reaction. The chlorides can cause corrosion of steel reinforcement in concrete. Ferrous oxide and ferric oxide form on the surface of reinforcing steel in concrete. Ferros oxide reacts with chlorides to form complexes that move away from the steel to form rust. The chloride ions continue to attack the steel until the passivating oxide layer is destroyed. Commercially available corrosion inhibitors are like Sodium Nitrite, Dimethyl ethanolamine, amines, phosphates, ester amines. Etc.
7) Shrinkage Reducing Admixture: By these types of admixtures some shrinkage cracks can be reduced.
8) Apart from these other admixtures like Colouring admixtures, and miscellaneous admixtures like workability, bonding, grouting, gas foaming & pumping admixtures can be used in concrete as per the requirement.
Disadvantages:
Everything has some advantages and some disadvantages .By using high range water reducing admixture we can get higher strength in concrete than the general concrete due to water cement ratio is less. But by application of high range water reducing admixtures we may face some problems.
· Additional cost increases due to admixture.· As comparatively tradition all concrete slump loss occurs
more.· Admixtures are not familiar to all types of cements.· Changing or modifying the dosages of air entraining
admixture may be needed.· Due to application of admixtures there are chances of
discoloration of concrete.
For better result some Precaution to be taken if admixtures are used.
· Admixtures should not be directly added to cement.· Water cement ratio should be maintained as low as
possible.· Recommended dosage of admixture should not be
increased without any trial.· Good construction practice should be maintained.
Mr. Pradeep Kumar BarikCTS, Bhubaneswar
Use of Admixture in ConcreteBig IdeasWinning Entry
J u n e - 2 0 1 5
19
Program at DhanbadExecutives Present :
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Mr. Arnab Paul (Retailer)
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Mr. Sunil Kumar (CTS)Mr. Jai Prakesh, Mr. Abhishek Kumar (Marketing)
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CSM
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Counter Service Meet
This activity is oragnised at a stockist’s counter to increase brand awareness and to respond to all sales & technical related
problems faced by consumers during construction activities.
22
CSM
Program at ZirakpurExecutives Present:
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Painterʼs�Technical�Workshop
PTW Paintersʼ�Technical�Workshop�is�conducted�to�develop�specialised�application�awareness�amongst�painters�about�J.K.�Wall�Putty,�Cement�Paint�&�White�Washing�with�White�Cement�application.
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SST is organised to impart techno commercial skills to the participants by educating them on Technical & Marketing facts about our Products,
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J u n e - 2 0 1 5
23
Tech Talk
Urbanization means shifting of population from rural to
urban areas. Urbanization is not merely a modern
phenomenon, but a rapid and historical transformation of
human social roots on a global scale. In other words rural
culture is being rapidly replaced by urban culture.
At the end of the 20th century, only 15 % of the population
lived in the cities. The year 2007 witnessed the turning point.
In that year more than 50% of the world population were
living in the cities.
The main reasons behind urbanization are individual,
commercial, social, and other activities of human being.
Cities or town are places, where money, services, wealth
and other opportunities are very helpful to human beings
and thus it is natural for human being to shift from rural areas
to urban areas. The industrialization worked as catalyst in
this direction.
The urbanization has brought a land mark change in
economic areas. Improvement in social –economic life and
thus paved the way to standardization is the significant
change due to urbanization of the world.
Urbanization also has brought major changes in
Urbanization in Rural Areas
environmental life of human being. The urbanization leaded
to deforestation and deforestation ultimately has brought
major changes of environment .The environment changes
ultimately affected the health phenomenon of human
beings. Different forms of urbanization can be classified on
the style of planning and architecture of the world.
At last, it may be concluded that urbanization is closely
connected with social, political, industrial, economic and
cultural development of society and ultimately development
of country and world. Success of sustainable development
in urbanization process depends on the relationship
between towns and their rural territory. Rural areas need to
be evaluated and accordingly development should be
planned. The rural production and market to their products
with reasonable price can give rise to the faster economic
growth. The fundamental infrastructure e.g electricity,
roads, water supply, school, hospital and law and order are
necessary to be ensured.
Urbanization of rural areas should be a current thought of
development in India.
Mr. Rameshwar Singh
CTS, Patna
24
Tech Talk
Everyone have a dream to have a well constructed home for
which they choose best Builders, Contractors and
Architects. Generally construction industry fall victim to non-
technical persons like (Masons, Supervisors etc.) Most of
them have little or no knowledge of correct construction
practices.
A Healthy building is necessary for the construction agency
and the owner has to ensure good quality of materials and
good construction practices. Each stagefor building
completion must be properly supervised and controlled
without any ignorance.
The main reasons for Poor construction practices and
inadequate quality of buildings are as follows:
• Improper material selected while construction.
• Due to poor quality low-cost materials.
• Improper proportioning of concrete mix constituents,
mortar etc.
Good Workmanship is necessary for Good Construction
• Poor control on various steps of concrete production
such as batching, mixing, transporting, placing,
finishing and curing
Mr. Vikrant TataCTS, Delhi
MARKETING EXECUTIVES(GREY CEMENT - NORTH)
Mr. Deepak Mehra - President (Grey Cement Marketing), Delhi, E-mail : [email protected]; Mobile : 9717797774
For any corrections in above, please write to [email protected] At your service : 1800 102 8868
HEAD - KEY PROJECTS - PAN INDIADelhi Mr. Sandeep Puri 9818661262
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REGIONAL HEAD
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PUNJAB
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Chandigarh Mr. Arvind Sharma 7087970840
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HARYANA
ZONAL HEAD - HARYANA & PUNJABGurgaon Mr. Shailendra Arora 8295500524
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Satara Mr. Durgesh Kulkarni 9823013007
Sindhudrug Mr. Sagar Talwar 9970961113
MAHARASHTRA
For any corrections in above, please write to [email protected] At your service : 1800 102 8868
Central Marketing Office, Pune (Maharashtra)
Goa Mr. Milind Desai 9503086878
Goa Mr. Shaunit Savaradekar 7387363478
Goa Mr. Sachin Sawant 7028022878
Goa Mr. Varun Prabhu Desai 7709901116
GOA
Calicut Mr. Jitesh PU 9567693170
Calicut Mr. Binnie James Stephen 9567693172
Vadakara Mr. Muhammad Afsal 8943739133
Kasargud Mr. Sudheer Raj 9495091948
KERALA
26
J.K. WHITE CEMENT (For India & Nepal)
Delhi Mr. Z.A. Khan 9711307722
NORTH ZONEMr. Rakesh Gupta (Delhi) - 9873602817
DELHI Delhi Mr. Anurag Sharma 9811673441West Delhi Mr. Zia-Ul Absar 9810329427East Delhi Mr. Mukhtar Ahmad 9810495083
HARYANAGurgaon Mr. Ranjan Kr. Singh 9958995991Gurgaon Mr. Uttam Chandra 9810195083Ambala Mr. Arun Kr. Shukla 8295926010Faridabad Mr. Amit Kumar Giri 9810495082Rohtak Mr. Rakesh Kr. Tiwari 8295956925Karnal Mr. Ashish Murarka 8295956934Sonepat Mr. Shamsher Singh 8295956952
CHANDIGARHChandigarh Mr. D.D. Sharma 9780400548Una Mr. Daksh Kr Sharma 9805097881
JAMMU & KASHMIRJammu Mr. Ajay Koul 9596898672
PUNJAB Ludhiana Mr. Arvind Sidana 9878224117Jalandhar Mr. Prem Mohan 9876023902 GautamAmritsar Mr. Manjeet Kumar 9878429527Ludhiana Mr. Priyesh Sood 9878429528Ludhiana Mr. Himanshu 9878429539 UpadhyayBhatinda Mr. Jagmohan Mittal 9878429526Jalandhar Mr. Daljit Singh 9878429525Patiala Mr. Himanshu Porwal 9915579142
RAJASTHANJaipur Mr. Kamlesh Kumar 9983370700Udaipur Mr. Vikas Khokhawat 8003490636Kota Mr. Chandra Shekhar 8003490638 SahuJodhpur Mr. Manish Soni 8003490635Bikaner Mr. Sofin Panwar 8003490637Ajmer Mr. Madan Mohan 8003490640 BishnoiAlwar Mr. Yasser Hasan 8003490634 KhanJaipur Mr. Sandeep Pareek 8003490641Sri Ganganagar Mr. Gaurav Mathur 9799099854
CENTRAL ZONE Mr. Rajeev Kumar (Kanpur) - 9984488207
UTTAR PRADESH / UTTARAKHANDGhaziabad Mr. Atul Chaturvedi 9873352170Agra Mr. Sandeep Sharma 9721451372Agra Mohd. Mushahid 9721451373Agra Mr. Vishal Kulshrestha 9721451374Mathura Mr. Krishna Kant 9721451375 SaraswatGhaziabad Mr. Deepak Bhatt 9953204263Dehradun Mr. Rajesh Singh 9721451376Bareilly Mr. Sanjay Kr. Jha 9721451377Roorkee Mr. Pushpak 9721451379 MaheshwariMoradabad Mr. Saurabh Mishra 9721451378Haridwar Mr. Ram Pratap 9721451395 SinghHaldwani Mr. Kundal Singh 9721451380Lucknow Mr. Digvijay Singh 9721451392Lucknow Mr. Gaurav Dhawan 9721451382Lucknow Mr. Vipin Sharma 9721451384
MAHARASHTRAMumbai Mr. Navdish Sharma 8600014907Pune Mr. Dheerendra Kr. 7387000845Pune Mr. Sanjay Jadhav 9822197404Nasik Mr. Shivraj Gaidhani 9850004862Aurangabad Mr. Jagdish Erande 9561213314Kolhapur Mr. Jatin Bhise 9881138769Nagpur Mr. Mahendra Kumar 8600016105 OmreMumbai Mr. Sachin Ahire 8600014909Mumbai Mr. Amol Raste 8600014906Akola Mr. Rahul Tarar 8600016110
GOAGoa Mr. Purshottam 8600022652 Chatim
KARNATAKABangalore Mr. T. Bhaskar Reddy 7829244408Bangalore Mr. P. Sridhar 9916758552Gulbarga Mr. Yogesh Waghela 9916993965Bangalore Mr. Ravi Koulgi 9886056655Hubli Mr. Mahesh Dandoti 9886558550Mysore Mr. Jayachandra 9740908639Belgaum Mr. Sanket 9880204647
WEST ZONE - 2Mr. Sunil P. Ojha (Ahmedabad) - 7043017700
GUJARATAhmedabad Mr. Ashok Joshi 7043020700Surat Mr. M.S. Haque 9879556525Rajkot Mr. Bhargav Mehta 9879111524Jamnagar Mr. Manish Trivedi 9879111533Vadodara Mr. Amit Kr. Shukla 9879110518Gandhidham Mr. Nishant Thacker 9879111521Rajkot Mr. Narendra Rohella 9879111523Ahmedabad Mr. Jatin Kr. Singh 8511130475Bhavnagar Mr. Jigar Pandya 9574002396
SOUTH ZONEMr. A.L. Sundararajan (Chennai) - 9176628739
ANDHRA PRADESHGuntur Mr. D Philip Sukumar 9966207100Guntur Mr. Uav Prasad 9963473362Tirupati Mr. Uma Shankar 9849035990Visakhapatnam Mr. K. Giridhara Rao 9866314593
TELANGANAHyderabad Mr. T.V. Ramana Rao 9989584593Hyderabad Mr. K. Baswaraj 9849647197Warangal Mr. V. Pavan Kumar 9866314591
KERALACochin Mr. Joby Varghese 9539009041Calicut Mr. Sreejith M Sekhar 9539009045Kottayam Mr. Dintomon 9539009044Kannur Mr. Sudeesh 9539009258Trivandrum Mr. Sreekumar T.P. 9539009050Thrissur Mr. Suraj Surendran 9539009259
TAMIL NADUChennai Mr. V. Mahaadev 9176659638Madurai Mr. M. Baburaj 8939843413Pondicherry Mr. A. Jayaseelan 9176615930Trichy Mr. R. Subash 9176615934 Chandra BoseSalem Mr. L. Senthilvel 9176615932Coimbatore Mr. A.K. 9176615927 SathyanarayanaVellore Mr. K. Arunkumar 9176613302
MARKETING EXECUTIVES
For any corrections in above, please write to [email protected] At your service : 1800 102 8868
Lucknow Mr. Neeraj Awasthi 9721451385Lucknow Mr. Pradeep Kumar 9721451393Lucknow Mr. Manish Anand 9721451396Faizabad Mr. Vikas Dwivedi 9721451383Gorakhpur Mr. Hemant Misra 9721451386Kanpur Mr. Ramesh 9721451387 Chandra VermaKanpur Mr. Anurag Chaudhary 9721451388Kanpur Mr. Dinesh 9721451389 RaghuvanshiKanpur Mr. Shashikant 9721451390 ShrivastavaKanpur Mr. Ajeet Kr. Shukla 9721451436Allahabad Mr. Abhishek Mishra 9721451391Allahabad Mr. Abhishek Tripathi 9721451434Varanasi Mr. Kishore Kant 9721451397 GorevalaAgra Mr. Benoy Kumar 9721451394 Dutta
MADHYA PRADESHIndore Mr. Deepak Chhabra 9755099459Indore Mr. Lokesh Jain 9755211115Indore Mr. Shailendra Jain 7389944933Gwalior Mr. Jitendra Savkare 7389944935Bhopal Mr. Maneesh Mathur 7389944937Chhindwara Mr. Sudip Srivastava 7389944940Jabalpur Mr. Amit Kumar 7389944939Neemuch Mr. Rajeev Upadhyay 7389944936Guna Mr. Kuldeep Rathore 7389933095
EAST ZONE Mr. Paras Kumar (Kolkata) - 9830065091
WEST BENGAL Kolkata Mr. Kallol Paul 9836771313Kolkata Mr. Anant Kr. Mandal 9836771515Durgapur Mr. Debanjan Sadhu 9830124342Siliguri Mr. Kallol Chakraborty 9830090631
ORISSABhubaneswar Mr. Ankur Rastogi 7381097295Cuttack Mr. Manas Ranjan 7381097296 DasSambalpur Mr. Suratha Barik 7381097297
North EastGuwahati Mr. Nilanjan 8811094866 Chakraborty
BIHARPatna Mr. Nalin Prabhat 8051808311Patna Mr. Arvind Kumar 8051808312Bhagalpur Mr. Bhanu Kr. Singh 8406923444Muzaffarpur Mr Satyaprakash 9431820201 Dubey
JHARKANDRanchi Mr. Sumit Kumar 8051808313
CHHATTISGARH Raipur Mr. S. Amarnath 9584955592Raipur Mr. Saurav Kumar 9584466970 AsthanaBilaspur Mr. Suraj Singh 9584469471
NEPALKathmandu Mr. Prashant 00977 Chaturvedi -9851050650Birganj Mr. Sanjay Kumar 00977 -9855026196
WEST ZONE - 1Mr. Rajiv Kumar Mishra (Pune) - 8600531113
Mr. Niranjan Mishra - President - Marketing (White Cement Marketing) Delhi, Mobile: 9899159397
Mr. Mohan Sharma - AVP - Marketing (White Cement) Delhi, Mobile: 9873930501
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CUSTOMER TECHNICAL SERVICES EXECUTIVES Mr. R.P. Singh (Head-CTS); E-mail: [email protected]; Mobile: 9582219292
JKNH/2015-16/09
For any corrections in above, please write to [email protected] At your service : 1800 102 8868
ANDHRA PRADESH
Guntur Mr. S. Rehman Raja 9963472672
Vishakhapatnam Mr. A. V. Krishna 9963472673
Hyderabad Mr. Veerendra Nijampure 9963473370
Hyderabad Mr. S. S. Rao 9963472671
Thirupathi Mr. Abburi Venkateshwaralu 9963472674
ASSAM
Guwahati Mr. Nilanjan Bhattacharjee 9954089549
BIHAR
Patna Mr. Rameshwar Singh 9431108512
Patna Mr. Raj Bihari Pankaj 9430307992
Bhagalpur Mr. Harshit Raj 9835666987
Muzaffarpur Mr. Kundan Kumar 9570220101
CHATTISGARH
Raipur Mr. Rajesh Tandon 9425503739
DELHI
New Delhi Mr. R.K. Jha 9582250226
New Delhi Mr. Vikrant Tata 9999196864
West Delhi Mr. Mukul Shukla 9910027292
East Delhi Mr. Rohit Kapoor 8588826847
South Delhi Mr. Rakesh Singh 9582305424
GOA
Panaji Mr. Gopal Ramesh Joshi 7387256453
GUJARAT
Rajkot Mr. H.K. Vachhani 9426429805
Ahmedabad Mr. Pulin Mistry 9724214161
HARYANA
Rohtak Mr. Vikas Lamba 9992990555
Ambala Mr. Sachin Dahri 8053653738
Gurgaon Mr. P. K. Joshi 9818933227
Gurgaon Mr. Sanjay Khanduri 9412052130
Gurgaon Mr. Rohit Kumar Tyagi 9582060672
Hissar Mr. Suresh Poonia 8950000033
Karnal Mr. Gurvinder Singh 8930560005
Faridabad Mr. Himanshu Chaudhary 9828341356
HIMACHAL PRADESH
Hamirpur Mr. Susheel Kumar Mehra 8894677555
JAMMU & KASHMIR
Srinagar Mr. Yasir Majid Khan 9419087580
JHARKAND
Ranchi Mr. Sunil Kumar 9431103089
KARNATAKA
Bangalore Mr. P. S. Punneshetty 9448118205
Bangalore Mr. S. Santosh Kumar 8050078111
Bellary Mr. Sharana Basava Anpur 9964085773
Belgaum Mr. Bharatesh N Jakkannavar 9902172236
Gulbarga Mr. Vijay Kumar C. Patil 9880884520
Hubli Mr. Sanjeev Kumar Ganiger 7022033495
Mysore Mr. Jayasimha N.S. 9916021886
Shimoga Mr. Vinay S.D. 9986115537
Mangalore Mr. Nishanth R. 7022033491
KERALA
Calicut Mr. Jovin K Jayakumar 9745505523
Kochi Mr. Rajan. V.A. 9745505529
MADHYA PRADESH
Indore Mr. Rajeev Gupta 9425602156
Indore Mr. Devendra Thakur 9755022531
Jabalpur Mr. Ramesh Somkuwar 9425800273
Gwalior Mr. Vivek Pratap Singh 8899736168
Ratlam Mr. Mayank Pathak 9981959513
Bhopal Mr. Manoj Patle 7389944523
MAHARASHTRA
Pune Mr. N. J. Shah 7387363578
Pune Mr. N. K. Mathur 8600996078
Pune Mr. Umesh D Udavant 8600177346
Pune Mr. Atul Wairagade 7028912334
Mumbai Mr. Nikhil Pimputkar 9511919034
Amravati Mr. Kishor N. Yerne 9561050052
Nashik Mr. Vijay Khadse 9561003309
Kolhapur Mr. L S Desai, 9970117388
Nagpur Mr. Nitin Akolkhedkar 9096066739
Sangali Mr. Swapnil Mene 9762532292
Satara Mr. Nilam Gaikwad 9665671115
Solapur Mr. Mahesh P. Bendre 9561050059
Ahmednagar Mr. Akhilesh Nitnaware 7709909209
Aurangabad Mr. Pankaj Sakharkar 7755950032
ODISHA
Bhubaneshwar Mr. Pradeep Barik 9437100272
Sambhalpur Mr. Bhairva Kumar Pattanaik 9438256230
PUNJAB
Chandigarh Mr. Dinesh Sharma 9878429509
Ludhiana Mr. Shailendra Singh 7087409088
RAJASTHAN
Jaipur Mr. Manoj Kulshrestha 8003994460
Jaipur Mr. Pushpendra Singh 8003994478
Ajmer Mr. Prakash Verma 8003994479
Jodhpur Mr. Virendra Takle 8003994488
Sikar Mr. Nilesh Sharma 8003994471
Udaipur Mr. Arpit Nayyar 7895209020
Shriganganagar Mr. Nirmal Sharma 9896155143
Kota Mr. Vikas Kumar 9950064160
TAMIL NADU
Chennai Mr. R. Arunachalam 9840897299
Chennai Mr. C. Balakrishnan 9841511873
Chennai Mr. R Ramesh 9566021392
Trichy Mr. T. S. Ramesh 9884361992
Salem Mr. N Elamvaluthi 9789776596
Pondicherry Mr. R. Sivaramakrishnan 9688466499
Madurai Mr. C. Thiyagu 8939843458
UTTAR PRADESH
Allahabad Mr. Ashish Srivastava 9897878681
Bareilly Mr. Arvind Kumar Dubey 8909080881
Ghaziabad Mr. Awadhesh Kumar Mishra 9458756787
Gorakhpur Mr. A. P. Singh 9415600024
Jhansi Mr. Mahendra Pratap Singh 9648100010
Lucknow Mr. Rajesh Mishra 9648655111
Varanasi Mr. Raghvendra Roy 7080809994
Agra Mr. Arpit Jain 7055511511
Aligarh Mr. Ankit Ojha 7060086822
Meerut Mr. Prashant Dwivedi 7060484323
UTTARAKHAND
Dehradun Mr. Vinay Kr. Vishwakarma 9897385444
WEST BENGAL
Kolkata Mr. S.P. Arora 9928830730
Kolkata Mr. B.K. Tiwari 8335858200
Kolkata Mr. Sanjay Kumar Chatterjee 9051851051
Kolkata Mr. Anirban Chakravarti 9874321598
Burdhman Mr. Chiranjib Ghosh 8017052888
Siliguri Mr. Subendhu Das 9830013967
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