Portland cement

 

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Portland cement

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• portland cement

From its resemblance to limestone from Portland in Dorset.

Portland cement (countable and uncountable, plural Portland cements)

1. A finely-ground powder made by heating and pulverizing limestone and clay.
   • 2023 December 27, Richard Foster, “Building a greener future”, in RAIL, number 999, page 36:

     Ordinary Portland Cement (OPC) is the world's most common form of cement. The blue plaque dedicated to inventor Joseph Aspdin describes OPC as "one of mankind's most important manufactured materials".