such as pozzolana—a type of volcanic ash. Jackson and her collaborators have tested their hypotheses by creating modern analogues of Roman concrete. "The way Romans chose the materials actually ...
JK Super Cement Portland Pozzolana Cement (PPC); JK Super Ordinary Portland Cement (OPC) 43, JK Super OPC 53, and JK Super Portland Slag Cement (PSC). The White cement portfolio includes JKC ...