Using less can make concrete harder to work with as it becomes stiffer. But research on optimizing the packing of concrete particles indicates that the volume of paste can be reduced to 18–20% ...

Cement begins as a powdery substance, and when mixed with water, it becomes a binder. It is used to create mortar, as well as ...

ADDIS ABABA, March 12 (Xinhua) -- Ethiopia's Chinese-built Lemi National Cement Factory, the largest of its kind in the country with a daily production capacity of 10,000 tonnes, has won acclaim for ...