Other Free Encyclopedias » 21st Century Webster's Family Encyclopedia » 21st Century Webster's Family Encyclopedia - Clyde to Constable, John

Concrete

cement building

Concrete, versatile structural building material made by mixing broken stone or gravel with sand, cement, and water. Initially moldable, the cement hardens into a solid mass. Concrete is often reinforced by enbedding steel bars in it to bear the tension. It is used for all building elements and for bridges, dams, canals, and highways, often as precast units.

See also: Cement.

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