This topic includes information related to structural concrete that is cast in place during construction. Structural concrete, which is composed of a mixture of cement, aggregate, water and admixtures, has a dull, gray color with a rough texture. It is commonly concealed behind interior finishes. Structural concrete is reinforced with steel and can be cast in place as a beam, column, girder, joist, slab or other structural member. Various types of structural concrete include; heavyweight, lightweight, shrinkage compensating, high performance and self compacting.