Concrete is everywhere

Concrete is the world's most widely used artificial building materials. In one point five billion tonnes of cement is produced worldwide annually, with some forty percent of them used in China. The concrete made with this cement more than ten billion tons annually. If you are, how much concrete can imagine has been used over the centuries, it would be mind boggling. The history of cement and concrete is more than five thousand years. If one follows the familiarGeological history of the cement, it's back around twelve million years ago.

Let's stay if the person was involved, and whether you go back to Egypt. For sure, that the Egyptians would have liked the chance have we to do in those days, the pyramid had with some of Las Vegas, precast concrete forms. The ancient Egyptians used mud and straw bound together with plaster, which dried bricks. For binding to the large stone they used lime mortar. Near the same time, the Chinese were cemented withMaterials between the bamboo in their boats and the construction of the Great Wall.

The Greeks were the first to discover how working hydraulic mortars both in the air and in water. This was used in the construction of watertight container similar to Hawaii today uses similar precast concrete in prefabricated shapes completely inundated. The Romans then refined and mortar for the invention of concrete, caused by broken brick aggregate in a mixture ofLime paste with volcanic ash or brick dust. You can still part of their work in the Colosseum, the Pantheon, the great Roman baths and many other outstanding examples of how stable is this new form of building material really.

Unfortunately, after the fall of the Roman Empire, it seems concrete and cement production was halted. It is not really get back to the seventeenth century. Apparently, the first concrete structure was built since the Romans, was theEddystone lighthouse in England. The first concrete bridge was built in 1818 in Souillac France. Then in England, invented in 1824, a man named Joseph Aspdin Portland cement. This was the Portland cement, because she wore a similarity with the stones on the Isle of Portland removed. It is still in use in products like precast concrete utility vault.

Used machinery storage units