Concept in Definition ABC

The Cement is a material that results from the combination of ground clay with powdery calcareous materials, meanwhile, once come into contact with him Water solidifies and becomes hard. It is mostly employed at the behest of the building, precisely because of its solidity, such as adherent and binder.

There are two types of cement, depending on its origin: of clay origin, made from clay and limestone; and on the other hand the pozzolanic, which contains pozzolana, a siliceous aluminum material used in the Ancient Rome to produce the cement until the appearance of portland cement in the 19th century. The aforementioned pozzolana may come from volcanoes or have an origin organic.

Because of what is exposed to cement, it is considered a binder material since it is capable of joining parts of various materials and giving them cohesion from various chemical modifications in the mass.

It should be noted that when it is mixed with water, sand and gravel, the concrete or concrete

, a malleable and uniform type mixture that also has a widespread use on engineering and under construction.

Among its most notable properties are: endurance to the invasion chemistry and resistance to elevated temperatures among the most important.

Since ancient times, special mixtures were needed for constructions. In the Ancient Greece The use of volcanic tuffs was frequent to obtain cement, that is, it was obtained only in a natural way, while, in the XIX century, more precisely in the year 1824, was a revolution when the British Joseph Aspdin patented portland cement, which was named for its dark green coloration, similar to Portland stone.

Portland cement is a hydraulic cement that once mixed with water, fibers of steel and arid becomes a mass of stony characteristics, solid and that stands out for its very long duration. It is the star of the constructions to prepare the concrete.

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