论文简介： Concrete is defined as a composite material which consists essentially of a binding medium of embedded particles or aggregate fragments. In Portland cement concrete, the binder is a mixture of Portland cement and water. Asphalt and other cements are used to make various types of concrete, but commonly the term concrete refers to Portland cement concrete.
Concrete is defined as a composite material which consists essentially of a binding medium of embedded particles or aggregate fragments. In Portland cement concrete, the binder is a mixture of Portland cement and water. Asphalt and other cements are used to make various types of concrete, but commonly the term concrete refers to Portland cement concrete.
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