The Concrete Mix: What is the difference between Type 1, 2
Aug 05, 2011 · What is the difference between Type 1, 2 & 3 Cements In the Concrete Precast industry we usually use three types of portland cement (a cement made of limestone and submarine clay), which is specified by ASTM C150. There are a total of 8 types of portland cement: I, Ia, II, IIa, III, IIIa, IV, & V. Below is a very brief synopsis of the three