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GREEN BUILDING MATERIALS
| Date post: | 06-May-2015 |
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Education |
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GREEN BUILDING
MATERIALS
WHAT ISGREEN BUILDING
Green building refers to a structure and using process that is environmentally
responsible and resource-efficient throughout a building's life-cycle and provide healthy space for occupant as
compared to conventional building
GREEN BUILDING MATERIALS
• BUILDING MATERIALS WHICH ARE COMPOSED OF RENEWABLE RESOURCES RATHER THAN NON –RENEWABLE.
WHY GREEN
BUILDING MATERIALS
?
Current construction practice
• consumes 3 billion tones of raw materials per year.
• 1/6th of total water pumped out of natural flows.
• It consumes 1/2 of world energy production.
• Reason for 1/4th of virgin wood harvesting.
SELECTION CRITERIA
• RESOURCE EFFICIENT• ENERGY CONSERVATION• WATER CONSERVATION• AFFORDABILITY
BENEFITS
• CONSERVE AND RESTORE NATURAL RESOURCES
• IMPROVE AIR AND WATER QUALITY
• REDUCES OPERATING COST• ENHANCE OCCUPANT
HEALTH AND COMFORT
GREEN BUILDING
MATERIALS
• Green Concrete • Bagasse cement boards• Coir CNS boards • Light weight sandwich panels• Straw baled rods• Low VOC Paints • Roof top green Garden • Rigid PVC Foamed and Un-
foamed Boards
GREEN CONCRETE
• Green concrete is a type of concrete which represents conventional concrete but the production and usage requires minimum amount of energy causes and causes least harm to environment.
RAW MATERIALS
CEMENT: OPC (43 GRADE) with 28% normal consistency and specific surface area 3300cm2/kg
MARBLE SLUDGE POWDER: It had a high specific surface area. Specific gravity of marble sludge powder is 2.2122.
QUARRY ROCK DUST: The specific gravity is 2.677.
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FINE AGGREGATE: Modulus of fineness is 2.2 specific gravity is 2.677.
COARSE AGGREGATE: Crushed stone with a size of 5-20mm.Flakiness within limits.
WATER: PotableSUPER PLASTICIZER: ‘Roff
super plast 320’ was used.
WORKABILITY COMPARISION
MIX SLUMP IN mm
Mix A( con concrete) 210
Mix B(Green concrete) 255
RESULT
Marble powder can reduce the content of calcium aluminates in cementitious material
,leading to the increase of sulphate resistance of concrete.
MIX Average compressive
strength Avg Tensile
strength
3 days 7 days 28days 3 days
7 days
28 days
Mix A 15.45 18.33 36.85 2.40 2.60 4.62
Mix B(green conc)
13.54 19.52 40.35 2.15 2.98 5.02
COMPRESSIVE AND TENSILE STRENGTH
INFERENCE• Water absorption of green
concrete is slightly higher than conventional concrete.
• Durability of green concrete under sulphate is higher to that of conventional concrete.
• Replacement of fine aggregate with 50% marble sludge powder and 50% quarry. rock dust gives an excellent result in strength aspect and quality aspect.
ADVANTAGES
ADVANTAGESOF
GREEN CONCRETE
• Since it uses the recycled aggregates and materials it reduces the extra load in landfills and reduces the wastage of aggregates.
• Reduces co2 emission , saves energy and waste water.
• Helps in reducing the consumption of cement overall.
• Use of fly ash also increases its workability and many other properties like durability to appreciable extent.
• Flexural strength of green concrete is almost equal to that of conventional concrete.
• Green concrete requires less maintenance and repairs.
• Good thermal resistant.
LIMITATIONS
• SUSCEPTIBLE TO FROST ACTION• SPILT TENSION OF GREEN
CONCRETE IS LESS THAN CONVENTIONAL CONCRETE
Bamboo
What is bamboo?• Bamboos are a diverse and primitive
group of perennial plants in the true grass family
• They are widely distributed throughout parts of the world, particularly in the Asia-Pacific region
• Bamboo species vary in height from 1 ft to over 100 ft tall and have stem diameters ranging from 1 mm to 30 cm.
Why is Bamboo important?- Is excellent at sequestering carbon dioxide and releasing oxygen .- Prevents soil erosion and maintains watershed integrity and soil health.- Provides habitats and food for a variety of species (Giant Panda, Mountain Bongo, lesser bamboo bat, etc)
Bamboo in Construction
Five story parking garage at the Leipzig Zoo using bamboo for the building’s envelope
Bamboo in Construction
Bamboo in Construction
Bamboo in Construction
Bamboo in Construction
Octagon Gazebo by Bamboo Technologies of Hawaii
Benefits of Building with Bamboo• The yield strength of bamboo is
25% greater than that of timber.• Has a tensile strength same as
steel (withstands up to 52,000 psi).• Has twice the compressive
strength of concrete.• Bamboo structures can be built
very quickly, are low cost, durable, and environmentally friendly.
Drawbacks of Bamboo• Untreated bamboo is
susceptible to attack by fungi and insects
• It is brittle in nature
COIR CNSL BOARDS
• It is a wood alternative which can be used for surfacing,door and window shutters, false ceiling, furniture etc.
Properties of CNSL Boards• It is a single layer pre
stressed Medium Density flat Fiber Board.
• It has low water absorption capacity, negligible change in dimensions due to absorption, Workable with normal wood working tools, paintable etc.
• Can replace wood.
SAILENT FEATURES
• Estimated cost of the board is 30% cheaper in comparison to commercially available similar products such as MDF board, plywood .
Bagasse cement boards and panels
• It uses sugar cane bagasse and Portland cement.
Light weight sandwich panels
• Made up of cellulose waste of paper industries ,which are rich in small fibers.
• Used for acoustics partitioning , paneling , thermal insulation , false ceiling.
Let’s join hands to promote this technology
for our better sustainable future.
