Cemcor CEM I 52,5 N bulk cement
The cement is manufactured at the Cemcor cement factory at Cookstown, Co. Tyrone, Northern Ireland, in accordance with B.S. EN 197-1:2011, Compositions, specifications and conformity criteria for common cements. The main material components of the cement are clinker, ground limestone and gypsum. A small amount of bypass dust is added as well as a chromate-reducing agent to the cement. A grinding aid is also added to assist in the grinding process. The clinker comprises the firing of the following products in the kiln at 1,500°C: limestone, shale, flue dust, gypsum with small amounts of iron oxide.