In order to address the issues of dwindling resources of natural sand and the increase in carbon dioxide emissions, especially from manufacturing cement or fired clay bricks, researchers at the Indian Institute of Science (IISc.) are exploring ways to store carbon dioxide from industrial flue gas in excavated soil and construction and demolition (C&D) waste.
According to the IISc., the construction sector today faces several challenges. It said that natural sand is fast becoming a scarce resource and that it might run out of supply by 2050.
Carbon dioxide emissions, especially from manufacturing cement or fired clay bricks, are increasing every year. The amount of C&D waste is on the rise – about 150 million tonnes are generated annually in India and the recycling rate is only about 1%.
