Concrete

=CONCRETE= media type="file" key="concrete.mp3"

Concrete is a mixture of cement, water and sand. When hardened it gains special resistance characteristics, it can resist water, fire and strong compression forces. Its lack of joints makes it even stronger because it reduces the number of weak points. Another very important characteristic is that concrete can pretty much be shaped in any form so it makes it perfect for a whole variety of constructions. Concrete can be used for personal houses, buildings and really big structures like skyscrapers, bridges, tunnels and many other day to day constructions. Combined with steel, concrete gain new tension capabilities that makes it even a better choice for many kind of structures. These two techniques are pretty much similar with the exception that tilt up, or tiltwall, constructions are poured at the same job site, resulting in easy transportation of the material. The precast concrete is poured previously, it makes it hard to transportate but in other hand it is a better choice when the weather at construction site its inappropriate for a tilt up construction.
 * CONCRETE **
 * USES **
 * NOTE **
 * TILT UP CONSTRUCTION AND PRECAST CONCRETE **