Engineered Solution Provider in Geosynthetics By M. VENKATARAMAN, Advisor, GWRL OPPURTUNITIES IN...

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Engineered Solution Provider in Geosynthetics

M. VENKATARAMAN, Advisor, GWRL

OPPURTUNITIES IN INDIAN INFRASTRUCTUREWITH GEOSYNTHETICS

M.Venkataraman, GWRL.

NEW CHALLENGES

In recent years, while providing a solution, the Engineer has to face increased challenges:

Various site constraints like space, alignments etc.

Tight time schedules

Ensure max. usage of local resources (Material &

Manpower), hence Cost effective!!

Least environment impact

Long term performance & higher Cost benefit ratio over

a larger period of time (Least maintenance cost)

SOLUTION !!!

USE OF APPROPRIATE GEOSYNTHETIC MATERIALS OFFERS THE POSSIBILITY TO

SOLVE OR DRASTICALLY REDUCE THE PROBLEMS

Geosynthetics – a planar product manufactured

from polymeric materials used with rock, earth,

or other geotechnical engineering related

material as an integral part of a human-made

project, structure, or system.

INTRODUCTION TO GEOSYNTHETICS

GEOSYNTHETICS

GEOSYNTHETICSCONCRETE & STEEL

• Separation

• Filtration

• Reinforcement

• Drainage

• Containment

FUNCTIONS OF GEOSYNTHETICS

Geogrids (Uniaxial &Biaxial)

GeotextilesWoven

Geosynthetic Clay Liners

Nonwoven

GeomembranesGeonet

OUR PRODUCT RANGE

GabionsSteel Wire Polymer Rope

Boulder NetGARMAT

Anco Drain

OUR PRODUCT RANGE

GEOSYNTHETICS DIVN.

ENV.PROTECTION INFRASTRUCTURE

LANDFILL ENGINEERING

COASTAL PROTECTION

ROCKFALL PROTECTION

RAILWAYS

GROUND IMPROVEMENT

CANAL LINING

FLOOD CONTROL

OUR KEY SECTORS

PRODUCTS & THEIR APPLICATIONS

PRODUCT & APPLICATION

• Steel Wire Gabions and Mattresses Form a variety of Monolithic Structures when filled with

boulders.

Find application as Retaining walls, Erosion and scour

protection works, Hydraulic / Coastal structures for River

and Channel Protection like Weirs, Check Dams,

Groynes, etc.

• PP Rope Gabions and Mattresses Collapsible Sausages used in Underwater Applications to

form structures like breakwaters, seawalls, groynes, and

aprons.

• Steel Wire Rope Nets– Rockfall Protection System used on high cuttings.

• Woven Multifilament Geotextiles– Used as Separator and filter in roads and railways.– Used as reinforcement in Ground Improvement and

Reinforced Slopes.– Made into Geotextile Tubes, Containers and Bags for use in

shore and bank protection works as groynes, breakwaters, sea

walls, etc.

• Geomat (Mulch mat) – Promotes micro-reinforced vegetation and effectively

controls erosion of top soil.

• Uniaxial Geogrids

– Characterized by High Strength at low strain along the

principal direction; Used in Reinforced soil structures.

• Biaxial Geogrids

– Structural performance by interlocking mechanism;

Possess high aperture stability and junction strength;

Used in ground stabilization, pavements and trackbed

stabilization.

• Nonwoven Geotextiles

– Used as drainage layer, geomembrane protection layer

and filter.

• HDPE Geomembranes

– Impermeable sheets used as barriers to liquid and

vapors; Finds application in landfills, canal lining,

reservoir lining, gypsum pond lining, etc.

• Geosynthetic Clay Liners

– Consists of a continuous layer of natural sodium

bentonite powder, sandwiched between geotextiles; Acts

as hydraulic barrier.

• Geonets

– Net like structure exclusively used for their in-plane

drainage function.

Woven Geotextile - Separator (Thane, Mumbai)

WOVEN GEOTEXTILES

Geogrid Wraparound Wall at CH. 48 KM & CH. 50 KM,Lucknow - Muzaffarpur National Highway Project

Filter - Woven geotextiles

Separator - Approach Embankment for Bridge across Vasista, Godavari at Chinchinada, A.P. (N H 5A)3

Reinforcement, Vishakapatnam Airport, Andhra Pradesh

WOVEN GEOTEXTILES

GEOTEXTILE TUBE - SHORE PROTECTION

Geotextile Tube

Geotextile Bags Woven

Geotextile

Shore Protection Works :

Shankarpur to Halda, West Bengal, India

WOVEN GEOTEXTILES

Filter Material

Geotextile Bags – Toe ProtectionGeotextile Tube

Geotextile Bags

Geotextile Tube

After installation - During High Tide

NONWOVEN GEOTEXTILES

Protection Layer,Doodhganga Canal Project, Kolhapur, Maharashtra

Lining of Dry Gypsum Pond, Coromandal Fertilizers Ltd.,Vishakapatnam

NONWOVEN GEOTEXTILES

Protection Layer in Landfills, HZL, Visakhapatnam, A.P

Tensar® Geogrid Reinforced Soil Wall System at CSEB, – Inner Side View, towards deck slab (Korba, India)

UNIAXIAL GEOGRIDS

RS Wall with Gabion Facia and Geogrid as reinforcement at Bellary, Karnataka)

Geogrid Wraparound Wall at CH. 48 KM & CH. 50 KM,Lucknow - Muzaffarpur National Highway Project

UNIAXIAL GEOGRIDS

Installation of Tensar SSLA30 Biaxial Geogrid at ballast level (Kazipet-Ballarshah section,, South Central Railway)

Subgrade Stabilization using Tensar Biaxial Geogrids

Talasari - Udhava Major Dist. Road, PWD, Maharashtra

BIAXIAL GEOGRIDS

Ground Improvement for Tank Foundation, HPCL, Mundra, Gujarat

Reservoir Lining, Finolex Industries, Maharashtra

Doodhganga Canal Project (Kolhapur, Maharashtra)

HDPE GEOMEMBRANE

Lining of Dry Gypsum Pond, Coromandal Fertilizers Ltd.,Vishakapatnam

HDPE GEOMEMBRANE

Landfill, HZL Visakhapatnam, A.P

PCMC Landfill, Pune

Shore Erosion - Swaminarayan Temple, Gujarat, India

POLYMER ROPE GABIONS

Groynes - Varsoli Creek, Alibaug, Maharashtra

POLYMER ROPE GABIONS

Revetment - Anti Erosion Sea BundMorbhagwa, Gujarat, India

Narmada Bank Protection Works, Madhi, Gujarat

Reinforced Soil System with Gabion Facia, MRPL, Mangalore

Gabion Facia

GarmatTM

ReinforcedSoil

STEEL GABIONS

Gabion Retaining Wall – Lavasa

Slope Retention works at Sakleshpur – Subhramanya Road Section, South Western Railways, Mysore Division

STEEL GABIONS

Abutment Protection Works, JJKR Section & DKB Line, East Coast Railways

Bridge Abutment, Central Railways, Mumbai Division

Toe Protection Works – Central Railways

Flood Protection Works, Mula River, PuneTapi River Bank Protection under Construction using Steel Gabions, Barimata, Surat, Gujarat)

Bank Protection, Gujarat

STEEL GABIONS

Jetty, Gujarat

Gabion Mattresses in Revetments, HCC Teesta

STEEL GABIONS

GarmatTM Erosion Control Mat (HZL, Vishakapatnam, Andhra Pradesh)

GARMATTM

GarmatTM Erosion Control Mat (Mahanadi Coal Fields, Talcher, Orissa)

Before After

MRPL, Mangalore

ANCO DRAIN

Anco Drain

TECHNICAL SPECIFICATIONS

Properties :

Polymer Composition, Structure & Physical

Properties

Mechanical Properties

Hydraulic Properties

Survivability

Installation Practices

UV Resistance

Present Scenario:• For any application, the technical specification

includes all the properties irrespective of the function to be satisfied

It is significant to specify the properties essential for the function

Eg: For Reinforcement application

It is more relevant to specify long-term strength and strength at 2% and 5% strain rather than Ultimate Strength

Dictates the exact materials and processes to be used in a project

No guarantee that the best available product is delivered

They focus on the Process and not on the Final Output (Performance)

FUNCTIONS PROPERTIES

Separation AOS

Filtration AOS & Permittivity

Drainage AOS & In-Plane Permeability

ReinforcementTensile Strength, Secant Modulus

Properties Influencing Effective Performance of the Product

GEOGRIDS IN PAVEMENTS

• Mechanism of Working– Lateral Restraint thro’ Better Confinement

and Interlocking

• Properties Influencing Effective Performance of the Product

Rib Thickness & ShapeRib Thickness & Shape

Aperture Size & ShapeAperture Size & Shape

• Properties Influencing Effective Performance of the Product

Junction Strength & Junction Strength & RigidityRigidity Junction EfficiencyJunction Efficiency

• Aperture RigidityAperture Rigidity

• Radial StiffnessRadial Stiffness

• Secant ModulusSecant Modulus

Performance specifications describe how the finished product should perform over time

It is the bridge between design, construction quality, and long-term product performance

Specifications that use quantified quality characteristics and life cycle cost relationships correlated to product performance.

PERFORMANCE RELATED SPECIFICATIONS (PRS)

Performance Parameters

– Depends on the Product and the application

Governing FactorsEnd Result Elements:

- Bearing capacity, stability, settlements, cracking, etc.,

Functional Requirements:- Smoothness, friction, etc.,

PERFORMANCE RELATED SPECIFICATIONS (PRS)

• Critical Quality Characteristics – Measurable and tied to product performance

• Prediction Tools (modelling and databases)– Verified, calibrated, validated, and made

appropriate for local conditions

• Life Cycle Cost Analyses (LCCA) – To compare the as-designed product section to

the as-built section

PERFORMANCE RELATED SPECIFICATIONS

Fundamental Requirements:

Improved link between Design and Construction

Improved and focused testing on characteristics related to performance

Promoting best practices to improve quality

Improving Flexibility, Efficiency and Value of the system

Benefits

Adding private sector innovation

Allow contractors more freedom to implement their own procedures, choose their own equipment, and conduct site-specific process control programs

Transferring risk away from the owner

Benefits

Determining good performance criteria and measures

Potential impacts to contractors performance bonds

A drastic change in corporate culture Openness and Trust Change of Industry mind set Focus on solution rather services Delivery driven by value not cost

Barriers

Premier Institutes and Agencies implementing PRS• FHWA

• AASHTO

• European Union

• UK

• DOT, California (Caltrans)

Winconsin, DOT experienced 36% improvement in highway ride quality & 10% savings in LCC using PRS in Pavements

WORLDWIDE SCENARIO

ROAD MAP TO THE FUTURE

VISION

Better translation of design and performance requirements into specifications

MISSION

Establish Performance Related Specifications

ROAD MAP TO THE FUTURE

Identify relationships that link design and

construction with product performance

Develop and Implement Performance

Specifications

Freedom to innovate with accountability to deliver

DRIVING FORCE

REFERENCES

Performance Specifications Strategic Road Map, 2004

http://www.fhwa.dot.gov/construction/pssr04tc.cfm

Developing Performance Specifications - Consultation

response analysis report, January 2004

http://www.highways.gov.uk/roads/3060.aspx

REFERENCES

INF02 Adopt Performance and Warranty

Specifications to Improve the Quality of Highway

Construction

http://cpr.ca.gov/CPR_Report/Issues_and_Recommend

ations/Chapter_4_Infrastructure/INF02.html

M.VenkataramanAdvisor, Geosynthetics Division,

Garware-Wall Ropes Ltd.Plot No. 11, Block D-1, M.I.D.C. Chinchwad, Pune- 411019, India.

Phone: + 91-20-30780000, 30780150Fax: + 91-20-30780350.

Email : geo@garwareropes.com mvenkatraman@garwareropes.com

Website : www.garwareropes.com

THANK YOU

Engineered Solution Provider in Geosynthetics By M. VENKATARAMAN, Advisor, GWRL OPPURTUNITIES IN...

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