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本文按正交设计配制多组不同配合比的水泥混凝土试件,得出三种不同粗集料混凝土抗折强度和混凝土混合料流动性同各因子之间的关系式,并提出以抗折强度为指标的混凝土混合料配合比设计方法。可供路(道)面水泥混凝土混合料的配比设计参考使用。文中还对水泥混凝土抗折与抗压强度关系、抗折弹性模量与抗折强度关系及砂率、粗集料最大粒径、集料含泥量对抗折强度影响进行了论证分析。
In this paper, a number of different proportions of cement concrete specimens were prepared by orthogonal design. The relationship between the flexural strength of three different kinds of coarse aggregate concrete and the fluidity of concrete mixture and the factors was obtained. The flexural strength As the index of concrete mix design method. For Road (Road) cement concrete mixture ratio design reference to use. The relationship between the flexural strength and compressive strength of cement concrete, the relationship between flexural modulus and flexural strength and the effect of sand rate, the maximum particle size of coarse aggregate and the clay content of aggregate on the flexural strength were also analyzed.