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中文摘要：
针对多孔混凝土材料在级配设计中与普通混凝土存在较大差异的问题,根据最大密度曲线理论,以减少细集料含量的方法设计了3种集料级配。通过设计正交试验,采用极差分析方法分析了集料级配、灰集比、水灰比对多孔混凝土材料力学强度和空隙率的影响。结果表明：级配方式、灰集比对多孔混凝土材料力学强度和空隙率影响较大。同时,正交试验的方差分析表明灰集比是影响力学强度的显著性因素,而级配方式和灰集比是影响空隙率的显著性因素。此外,通过回归分析发现多孔混凝土空隙率与强度之间具有良好的线性相关关系,二者此消彼长。
英文摘要：
Against the aggregate gradation design, gradation are designed with problem of large difference between porous concrete and cement concrete in according to the theoretical maximum density curve, three kinds of aggregate the method of reducing the fine aggregate content. Through orthogonal test,the effect of aggregate gradation, cement-aggregate ratio and water-cement ratio on the mechanical strength and porosity of porous concrete are analyzed. The results show that the grading method and cement-aggregate ratio have a significant influence on the mechanical strength and porosity of porous concrete materials. At the same time, the orthogonal experiment of variance analysis shows that cement-aggregate ratio is the significant factors influencing the mechanical strength, and the grading method and cement-aggregate ratio are the significant factors influencing the void fraction. In addition, through the regression analysis found that porosity and strength has a reciprocal linear relationship between each other.
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