Revolutionizing Construction Materials: Indian Scientists Develop Sustainable Alternatives to Natural Sand

 


Researchers at the Indian Institute of Science, Bengaluru have developed a unique material that can replace natural sand in construction, addressing the scarcity of natural sand. 

By injecting carbon dioxide gas into clayey soil and construction waste, the team has demonstrated the possibility of enhancing the compressive strength of construction materials by 20-22%. 

This innovative approach not only reduces the environmental impact of construction materials but also accelerates the development of engineering properties, leading to the creation of low-carbon prefabricated building products. 

Additionally, the team has explored the effects of sequestering carbon dioxide in excavated soil to create cement-lime-soil materials, resulting in enhanced compressive strength and accelerated curing time. 

The development of 3D-printable materials using excavated soil stabilized with binders further showcases the potential to reduce cement and sand requirements in construction. 

Future research will focus on assessing the impact of industrial flue gas on these materials' properties, with plans for industrial application and standards revision in cement-based construction materials.

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