ABSTRACT
The compressive strength and carbonation investigation (CSIR, 1999) conducted from 1988 to 1999 was done using concretes made with OPC, RHC cements. The OPC and RHC cements had 7 day strengths of 41 and 53 MPa respectively, and both cements had 77 MPa at 28 days. The cements are equivalent to CEM I 52.5 and CEM I 52.5R cement classifications of EN 197-1. Fly ash was blended with OPC in proportions of 0 to 50%FA while RHC mixes contained 0 to 25%FA. Three concrete strength grades of 25, 35 and 50 MPa were made according to mix parameters shown in Table 1.
