Concrete

The word concrete comes from the French. It was first mentioned by Bernard de Bélidor in a book on architecture. Concrete is a mixture of cement, aggregate or concrete aggregate (sand and gravel or crushed stone) and mixing water. It may also contain concrete admixtures and / or concrete additives. Together with reinforcing steel or prestressing steel, reinforced concrete or prestressed concrete can be produced. By adding fibers (steel, plastic or glass), fiber concrete or steel fiber concrete can be produced.