Modern stucco is used as an exterior cement plaster wall covering. The benefits of pozzolan use in cement and concrete are threefold. It is a mixture of gypsum, Portland cement, and sand. It used stone arches and waterproof cement. He enjoyed building granite sculptures and structures with local stone and cement. Common thermal mass materials include stone, cement, and water. It also consists of sand, cement, and lime. The Colosseum was constructed with several different materials&colon; wood, limestone, tuff, tiles, cement, and mortar. They are commonly made of a mixture of rocks, wood, cement and earth. There are also rubber and cement factories. Dwellings made from materials such as cement and tin are increasingly common. Many cement and fertilizer plants were also built. It also houses industries like steel, tinplate, cement and flour mills. It was later reconstructed haphazardly with cement and iron rods. Patents are pending on the use of magnesium silicate as a cement substitute.