This Day In History
This Day In History
Sunday, May 31, 2020

«cement»

October 21, 1824

Joseph Aspdin patents Portland cement. Portland cement (often referred to as OPC, from Ordinary Portland Cement) is the most common type of cement in general use around the world because it is a basic ingredient of concrete, mortar, stucco and most non-specialty grout.
cement, patent
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