Up to 150 million tons of construction and demolition (C&D) waste are produced annually in developing nations like India, making up 35–40% of the world's total C&D waste. According to the Centre for Science and Environment, India recycles just 1% (6500 tonnes) of its construction and demolition waste (C&D) per day. Recycled concrete aggregate is conserved by thermal and mechanical treatment of recycled coarse aggregate, while natural aggregate lessens the impact on landfills. Demolished concrete derbies are used as recycled concrete aggregate. The physical and mechanical properties of natural and recycled aggregate are studied in these experimental works by replacing natural aggregate (by weight) with 10%, 20%, 30%, and 40% recycled aggregate with M30 and M40 grade concrete. The results of compression and tensile strength are compared after 28 days.
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Falguni Patel (2024) studied this question.
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