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February 19, 2019 Tuesday 02:27:29 PM IST
Strong Bricks Can Be Made from Bio solids and Clay

As nations face scarcity of sand and bricks for building construction and tapping into precious non-renewable resources, scientists have now found that bricks made of biosolids recovered after sewage treatment have good strength and less energy consuming compared to traditional bricks.

Huge amounts of clay are dug every year to make bricks causing large scale environmental destruction. Annually, about 1500 million bricks are made worldwide from 3.13 bn cubic metres of clay. This requires the area of 1000 football fields dug to a depth of 440 m.The new research study on use of biosolids in brick making by RMIT University of Australia stated that the new process can help prevent 30% of biosolids being dumped into landfills The brick contains 75% clay and 25% biosolids. Prof. Abbas Moharjerani of RMIT School of Engineering says that this sustainable building material can solve two major environmental issues- finding more landfills to dump biosolids and reduce dependence on clay for brick making.

India can immensely benefit from using alternative materials for making brick and sand as the requirement for new houses, buildings and infrastructure are huge in a rapidly growing emerging economy.

 Source:https://www.mdpi.com/2075-5309/9/1/14/htm

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