Cement, Energy and Environment

~Enlarge View IU ...... __ .. (10_...,......, p Allll'lif\1 au fft•t ....., ....., ..1.\ ·-- .. __ ...... .......... .. .......... - ....... f!IIOO\kl - ............. .. .t.tt .... tl Itt "WI .... flo~ .... ., .... .-6UC..::r• 1(0)... . - • , r I ~- ' • Fixing the gaps • 11m •~•u • . :- • \ At a time when sand is becoming scarce and bricks expensive, fixing standards of C&D waste will tilt the market dynamics in its favour. But its potential cannot be fully tapped until the count ry expands its capacity to recycle the waste and introduces a comprehensive management policy. The Municipal Corporation of Delhi, the only municipality in the country to have a recycling C&D waste plant, has not been able to set up more recycling plants. Since 201 1, the Gurgaon municipal authority has been claiming on its website that the city will have two to three C&D recycling plants. "We have been pursuing the authority for more than a year to act on its resolution but the authorities are reluctant to allot municipal land for this purpose," says Sethi. Gauging f easibility Indian institutions are assessing durability ofproducts made from C&D debris National COUNCIL FOR CEMENT AND BUILDING MATERIALS, a premium government R&D facility based at Ballabgarh , has carried out studies that say fine aggregate from recycled C&D waste could be considered for use as part replacement of natural fine aggregates (sand). But durability stud ies will take at least one more year to conclude CENTRAL BUILDING RESEARCH INSTITUTE, based in Roorkee, says the quali ty of aggregate would depend on the quality of source. Tests on 10 beams. with 100 per cent recycled concrete aggregate have shown promising results. Further research is under way to establish the optimum percentage of replacement CENTRAL ROAD RESEARCH INSTITUTE, based in Delhi, has conducted multiple studies and is upbeat about the prospect of using recycled C&D waste in making concrete roads. It is willing to provide guidelines for use of C&D waste in road construction Proper segregation of C&D waste is important because it has a direct impact on the quality of the recycled product Maybe, they can learn from land-constrained Hong Kong which has stringent rules for C&D waste. It charges builders for generating C&D waste. Even if a bui lder utilises 100 per cent of C&D waste, he has to pay HK $27 (Rs 126) per tonne. The charges spike up to HK $125 (Rs 1,000) per tonne if the developer sends 50 per cent of the waste generated to landfill. The generation C&D waste reduced by 60 per cent in the first year of implementation of the rule in 2006. The government uses the revenue to run, maintain and subsidise C&D waste recycling . .centres. Instead of demolishing structures, builders now dismantle them to salvage the construction material (see 'Dismantle, not demolish'). To make this possible in India, MoEF also needs to hasten the formulation of Construction and Demolition Waste (Management and Handling) Rules, 2014. It needs to set up a system to support cities in collecting and recycling C&D waste. Given the magnitude of environmental destruction associated with construction material , promotion of alternatives and recycling of waste is not a matter of choice but necessity. Courtesy: Down to Earth, 16-31 August 2014, Pp. 36-40 India - Country Profile ' ENGINEERING TOMORROW Honeywell and Siemens Inspire India's Future Workforce If you believe anything you read job creation wi ll help solve many of India's turbulent eco-nomic issues. Global companies like Honeywell and Siemens understand that sponsoring scholarships, R&D projects and providing internship opportunities will be vital to India's engineering work- force of tomorrow. Honeywell Honeywell recently introduced Professor Claude Cohen- Tannoudji , Nobel laureate in physics, to the students and faculty 35 -