Ordinary Portland Cement - an overview | ScienceDirect Topics
Ordinary Portland Cement (OPC grade 53) manufactured by the Ultratech cement company from Gujarat, having a specific gravity of 3.15 g/cm 3, was used. Locally available 20 and 10-mm sized aggregates from around the Rajkot city area were used as coarse aggregates. Sand from the banks of Aaji River near Rajkot was used as fine aggregate.
