00:00Engineers in the U.K. have devised a new way of making low-carbon concrete.
00:07Researchers at the University of Cambridge say the method involves taking recycled cement
00:11powder and using it in place of the chemical mixture, or flux, that protects molten steel
00:17during the refining process.
00:19Scientists say the cement-based waste, or slag, created when steel is recycled is then
00:24siphoned off, cooled, and turned back into the high-quality binder contained in Portland
00:30concrete.
00:31The U.K. engineering team says the revolutionary method can be an emissions-free process if
00:37the furnace used to heat the steel and cement-based flux is powered by renewable electricity.
00:43Cement is the key ingredient in concrete, and responsible for about 90% of the material's
00:48carbon emissions, according to industry analysts.
00:50But now, researchers say the transformative solution developed in England could play a
00:55big role in the worldwide effort to achieve net-zero emissions.
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