South Valley Cement manufactures cement and related building materials. Its products include Portland cement clinker, Portland ordinary cement, and Ready-mix concrete. Portland cement clinker is made by heating, in a kiln, a homogeneous mixture of raw materials to a sintering temperature. Portland Ordinary Cement Portland cement is the most common type of cement in general use around the world, as it is a basic ingredient of concrete, mortar, stucco and most non-specialty grout. Ready Mix Concrete Ready-mix concrete is a type of concrete that is manufactured in a factory or batching plant, according to a set recipe, and then delivered to a worksite, by truck-mounted transit mixers.