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Cement is a binder, a substance used in construction that hardens, sets, and adheres to other materials to bind them together. When sand and gravel are combined with cement, concrete is produced. 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.

Talk about turning a problem into an asset.

It's made from industrial carbide sludge and urine.

It's made from industrial carbide sludge and urine.

Health News - Dengue continues to infect hundreds of millions of people and across the globe a year, and takes thousands of lives. But although the disease has been around for decades - if not centuries - and its virus was identified in 1943, there is still no vaccine or specific... Read more at www.tnp.sg