本文研究了粗集料的最大粒径、级配和压碎指标值等对路面混凝土抗折强度的影响。
The effect of maximum diameter, grading distribution and crushing index of coarse aggregate on flexural strength of concrete is investigated through experiments.
由于水坝的体积大，用来筑坝的混凝土的粗骨科粒径大、分级多。合理确定最大粒径、分级尺寸和级配十分重要。
Because of vast volume of a dam, the coarse aggregate of concrete used for constructing a dam is of large grain size and more grading.
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