Cement Strength Tests and Standards

Cement strength is measured with standard tests that use mortar, not neat cement paste. Cement paste alone is hard to shape into specimens that give consistent and reliable results. For that reason, the test samples are usually made with cement and sand.

For compressive strength, ASTM C 109-05 us...

The ability of cement to resist compressive forces is known as its compressive strength, while its ability to endure bending forces is referred to as its flexural strength.

Cement, standard sand, and water are taken in the required proportions and mixed to form cement mortar.

This mortar is cast into a 2 inch cube specimen, and a b...