Concrete is a material consisting of a hard, chemically inert particulate substance commonly known as aggregate. It has been used since the Assyrian and Babylonian era for cement or other bonding substance through the Egyptian times it appeared with lime and gypsum.
Later in History Cement became more like its modern concrete with the addition of pebbles, aggregates and brick by British Engineer John Smeaton in 1756. The introduction of imbedding cables usually steel brought concrete its first patent for Joseph Monier and the birth of reinforced concrete. We use concrete in this form now whilst spraying concrete to reinforce railways, Pipes , Floors, Arches, Bridges and other building structures
Posted: Feb 20, 2015
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