Concrete


 * Concrete**

Concrete is a solid construction material product of the mixture of some elements like cement, water, sand and stones. Is a very strong material and one of the most employed in buildings. Concrete can be poured into forms while liquid to produce a great variety of structural elements.

There are diferents kinds of concrete, such as:   Was developed to add the tensile strength of steel to the compressive strength of mass concrete.
 * Reinforced concrete**



**Precast-concrete construction**

Employs bricks, slabs, and supports made under optimal factory conditios to increase waterproofing and solidity, to decrease time and cost in erection, and to reduce expansion and contractions.​




 * Prestressed concrete **

Provies bearing members into wich reinforcement is set under tension to produce a live force to resist a particular load. Since the member acts like a spring, it can carry a grater load than an unstressed member of the same size.