It is popularly known as gray cement which is produced by grinding clinker with 5% gypsum. A minor constituent of less than 5% is also added to regulate the strength performance to comply with the requirements in BS12:1996 and BS EN 197-1 : 2000 class 52.5N. Most of the time, the minor constituent is flyash which will provide additional pozzalanic activity to improve its durability and strength performance. GIC OPC is manufactured using either the clinker produced by its own manufacturing facility or clinker imported. It is characterized by a rapid compressive strength development and a lower total alkali content, it is of one of the highest quality standard cement available in the local market. The feature of low alkali content provides additional protection to the concrete from Alkali-Aggregate Reaction (AAR).

It is used in all general concrete construction, mass and reinforced concrete.