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Concrete | Definition, Composition, Uses, Types, & Facts | Britannica
2024年10月26日 · concrete, in construction, structural material consisting of a hard, chemically inert particulate substance, known as aggregate (usually sand and gravel), that is bonded …
Concrete Buying Guide - Lowe's
2021年6月4日 · The terms concrete and cement are often used interchangeably. However, the two aren’t the same product. Cement is the main ingredient in concrete and acts as a binder. …
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