Cement ASTM Standards

…  as it is based entirely on performance testing, and not on chemical composition. Cements are classified under ASTM C1157 – 03 by type, and are …

OPC 52.5

…  are OPC 42.5, and OPC 52.5. There is no difference in chemical composition between the two cement grades, however OPC 52.5 is more finely …

OPC 42.5

…  on the market today are OPC 42.5 and OPC 52.5. There is no chemical difference in composition between these two grades of cement, however OPC 42.5 powder is more …

Ordinary Portland Cement

…  types of grout, where it acts as a binding agent. On a chemical level, Portland cement is a fine powder comprised of a minimum of 66% …  to a blending chamber, where it is monitored for chemical composition. It is almost impossible to overstate the importance of controlling …