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The History of Concrete
Member rating: No Rating | Words: | Submitted: Tue Aug 26 2003
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THE HISTORY OF CONCRETE Concrete has been used in construction for over 2000 years. The Romans used it for their Roadways & Aqueducts. The Romans used a primitive mix for their Concrete. Mortar consisted of small gravel & coarse sand mixed together with hot lime and water. To reduce shrinkage horsehair was used, much like we use polypropylene fibres today. They even added animal's blood to created small air bubbles in the concrete, making the mix more durable. The Romans used concrete extensively; they built over 5000 miles of roads. This is more than the total length of interstate highways in America today. Ancient roman concrete has withstood the attack by the elements for over 2000 years. The basic construction techniques of the Romans must be better than those of modern practice as judged by comparing the products. Roman concrete consisted of just three parts: Hydrate Lime, pozzolan ash form nearby Volcano,...
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