Large amounts of concrete were created during the construction of buildings, while 30–40% of the trash came from demolitions. Out of a total annual production of about 33 tonnes of copper slag worldwide, 6 to 6.5 tonnes are generated in India. India produces over 2 million tonnes of e-waste each year, and this material is already posing major environmental and public health risks. The strength of waste-derived concrete will decrease, making the employment of a different method to improve its qualities necessary. Concrete that “heals” cracks on its own thanks to new technology offers a promising future for decreasing the inevitable deterioration of concrete structures and the astronomical maintenance costs that go along with it. The abundance of organisms with outstanding talents found in nature, which surrounds us, may serve as an inspiration for the creation of cutting-edge regeneration techniques. Numerous professionals in the fields of civil engineering and biotechnology have resorted to microorganisms to produce bio-building materials that are strong and ecologically sound as well as societally and economically feasible. In this work, the use of waste materials in concrete is investigated, and the compressive strength of concrete with waste replacement is determined. A spore-forming bacteria called Bacillus subtilis was utilised as an additive to enhance the characteristics of concrete, and three primary Wastes, including Demolition Wastes, Copper Slag, and E-Wastes, were chosen to replace aggregate. According to the findings, self-healing technology results in a large and productive rise in mechanical characteristics.

Author(s) Details:

I. Rohini,
Faculty of Building and Environment, Sathyabama Institute of Science and Technology, Chennai 600119, India.

R. Padmapriya,
Faculty of Building and Environment, Sathyabama Institute of Science and Technology, Chennai 600119, India.

Please see the link here: https://stm.bookpi.org/COSTR-V4/article/view/8281

Keywords: Waste materials, demolition wastes, copper slag, e-waste, self-healing, mechanical properties

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