Abstract
High-strength and ultra-high-strength cast-in-place concrete tend to contain excessive unit volumes of cement when compared with normal concrete, and because the improvement of workability relies largely on the efficiency of the air-entraining and high-range water-reducting admixture, the properties of workability are different from normal concrete. With high-strength concrete it was found that the method of mixing concrete influenced flowability, strength properties, and pore structure. The manner in which this occurred is detailed.
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