人工砂对三板溪水电站面板混凝土性能的影响

Influence of Artificial Sand to Behavior of Face Concrete of Sanbanxi Hydropower Station

针对堆石坝混凝土面板的结构特点及边界条件,建立全面反映各主要影响因素的面板混凝土抗裂性能评价数学模型(即抗裂因子η),抗裂因子η越大,面板混凝土的抗裂性能越好。在相同配合比条件下,中砂拌制的面板混凝土抗压、抗拉性能及抗冻、抗裂性能均优于粗砂拌制的面板混凝土相应的技术指标。

In connection with structural features and bounuary conditions engineer set up a mathematical model, this is anti-crack factor （η） , for appraising the breaking resistance of face could influence breaking of face concrete. The bigger the factor concrete, the model can reflect main factors that concrete is. Under same condition of mix proportion, compressive （η） is, the better the breaking resistance of face strength, tensile strength, frost resistance and breaking resistance of face concrete mixing with middle-size sand are better than one mixing with large - size sand.