When this reaction occurs in soil, the precipitate binds soil particles together and fills gaps between them, resulting in a compact mass of soil. They devised a method for forming a hard solid, or precipitate, from the interaction of urea with calcium ions in industrial carbide sludge. The NTU scientists have now created biocement from two common waste materials: industrial carbide sludge and urea (from mammalian urine). Scientists at Nanyang Technological University, Singapore (NTU Singapore) have discovered a method to produce biocement from waste, making the alternative to traditional cement greener and more sustainable.īiocement is a kind of renewable cement that uses bacteria to create a hardening reaction that binds soil into a solid block.
Some examples include airborne pollutants in the form of dust, fumes, noise, and vibration while running equipment and blasting at quarries, as well as damage to the landscape caused by quarrying.
Cement consumption in the United States was estimated to be 109 million metric tons in 2021.Ĭement manufacturing has an impact on the environment at every level of the process. Cement is classified as hydraulic or non-hydraulic, with non-hydraulic cement not setting when water is present, while hydraulic cement needs a chemical reaction between dry materials and water.Ĭement is one of the most widely used materials on the planet. When sand and gravel are combined with cement, concrete is produced. Nanyang Technological University, Singapore researchers have found a new way to create cement from waste.Ĭreating renewable biocement entirely out of waste materialĬement is a binder, a substance used in construction that hardens, sets, and adheres to other materials to bind them together.
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