12-04-2012, 10:53 AM
Eco friendly constructionmaterials and practices
Eco_friendly_construction.pptx (Size: 690.2 KB / Downloads: 77)
Significance
Phenomenal growth of construction industry that depends upon depletable resources.
• Huge quantities of waste and byproducts generated every year.
• E.G. Fly ash –70-75 million tons/yr,
Blast furnace slag – 10 million tons/yr
• Perennial pressures on land and environment.
• Degree of environmental impact
Concepts
Sustainably managed materials are - environmentally preferable/sustainable quotient
•have a mitigated degree of adverse
impact on environment and human
ecosystem when compared with
equivalent products for the same
application
Energy consumption
Annual household primary energy consumption varies widely over a range of 4-
16GJ per capita
•• Perennial shift of patterns in energy consumption from the traditional low-energy to high-energy urban and the sustainable building construction goals for the future.
Low environmental impact materials
Environmental impact
1. Utilizing almost zero energy industrial waste to replace energy intensive material.
2. Reduction in the use of high-energy materials such as cement, concrete, steel etc by absolute volume when compared with equivalent products for the same application.
3. Effective savings in the primary grade raw materials, cumulative embodied energy, labour and capital investments.
Low VOC finishes
•Zero/low voc paints
•Use only low VOC paints,100% of all paints used in the interior of the building must be certified as containing zero or less than 150 gms/ltr ofVOCs per gallon.
• Environmental impact –
• Wide varieties of volatiles are released through oxidation by both solvent- based and water-based paints which
can be injurious to lung health and can be odorous.
• Best practices
•
over solvent based oil paints Latex paints are available
with recycled content but not in much in India.