Product Portland Cement Standard TS EN 197-1:2002 Product Description Portland Cement; limestone marl, clay, iron ore, pyrite ash, bauxite, etc. It is a product that is formed by grinding the clinker obtained as a result of mixing and grinding the raw material in appropriate proportions and cooking it together with some setting regulator (usually gypsum); It is a product that gains strength by freezing after a certain period of time after mixing with water. It is generally used in structures requiring high early strength, concretes poured in cold weather, prefabricated structures, tunnel-mold applications, production of construction chemicals and foundation concrete applications.