Ordinary Portland cement

Ordinary Portland cement is a hydraulic cementitious material made of Portland cement clinker, 5%-20% mixed material and an appropriate amount of gypsum grinding. It has the characteristics of high strength, high heat of hydration, good frost resistance, dry shrinkage, good wear resistance, good carbonization resistance, poor corrosion resistance, and no high temperature resistance.

"GB175-2007" stipulates that the hydraulic cementitious material made of Portland cement clinker, 5%-20% mixed material and appropriate amount of gypsum grinding is called ordinary Portland cement, referred to as ordinary cement.