Generally used in works requiring high strength values, dam and tunnel works, precast building, concrete works in low temperatures and building chemicals manufacturing. Chemical PropertiesOur DeclerationStandardUnitSiO2 20,05 %Fe2O3 3,71 %Al2o3 4,95 %CaO 62,74 %MgO 1,06 Max 5,0 %SO3 2,68 Max..