Concrete


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Concrete
1010401ConcreteContents
<anchor role="natural" id="p2000aedc9980072"></anchor><emphasis role="bold">History</emphasis> Concrete is an ancient materal of construction, first used during the Roman Empire, which extended from about 20 BC to 200 AD. The word concrete is derived from the Roman concretus, meaning to grow together. Although this early mixture was made with lime, cement, and a volcanic ash material called
Citation
Sidney M. Levy: Construction Databook. Concrete, Chapter (McGraw-Hill Professional, 1999), AccessEngineering Export