Split tension-It is a property of concrete by which we determine the fracture parameter of concrete....
Green building materilas
GREEN BUILDINGMATERIALS • BUILDING MATERIALS WHICH ARE COMPOSED OF RENEWABLE RESOURCES RATHER THAN NON – RENEWABLE.
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 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 MATERIALSCEMENT: OPC (43 GRADE) with 28% normal consistency and specific surface area 3300cm2/kgMARBLE SLUDGE POWDER: It had a high specific surface area. Specific gravity of marble sludge powder is
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: Potable
RESULTWORKABILITYCOMPARISIONMIX SLUMP IN mmMix A( con concrete) 210Mix B(Green concrete) 255 Marble powder can reduce the content ofcalcium aluminates in cementitious material ,leading to the increase of sulphate resistance of concrete.
COMPRESSIVE AND TENSILE STRENGTHMIX Average compressi strength Avg Tensi streng ve le th 3 days 7 days 28days 3 7 28 days days daysMix A 15.45 18.33 36.85 2.40 2.60 4.62Mix 13.54 19.52 40.35 2.15 2.98 5.02B(greenconc)
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.
• 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.
• SUSCEPTIBLE TO FROST ACTION• SPILT TENSION OF GREEN CONCRETE IS LESS THAN CONVENTIONAL CONCRETE
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 carbondioxide and releasing oxygen .- Prevents soil erosion and maintainswatershed integrity and soil health.- Provides habitats and food for avariety of species (Giant Panda,Mountain Bongo, lesser bamboo bat,etc)
Bamboo in ConstructionFive story parking garage atthe Leipzig Zoo usingbamboo for the building’senvelope
Bamboo in ConstructionOctagon Gazebo by BambooTechnologies of Hawaii
Benefits of Building withBamboo• 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 ofCNSLaBoards pre • It is single layer stressed Medium Density flat Fiber Board. • It has low water absorption capacity, negligible change in dimensions due to absorption, Workable with
SAILENT FEATURES • Estimated cost of the board is 30% cheaper in comparison to commercially available similar products such as MDF board, plywood .
Bagasse cement boardsand panels • It uses sugar cane bagasse and Portland cement.
Light weight sandwichpanels • 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.