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结合锦屏一级水电站的实际,对不同石粉含量大理岩人工砂拱坝混凝土性能进行试验研究结果表明:在调整砂率和用水量的情况下,采用石粉含量为16.8%~33.8%的大理岩人工砂作为细骨料,可以配制出性能指标满足设计要求的拱坝混凝土。综合考虑石粉含量对拱坝混凝土力学性能以及耐久性能的影响,锦屏一级水电站拱坝混凝土大理岩人工砂的石粉含量确定为20%为宜。
According to the actual situation of Jinping I Hydropower Station, the experimental results of concrete performance of marble sand arch dam with different content of rock powder show that when sand content and water consumption are adjusted, the marble with 16.7% ~ 33.8% Artificial sand as a fine aggregate, you can formulate the performance indicators to meet the design requirements of the arch dam concrete. Considering the influence of the content of rock powder on the mechanical properties and durability of concrete arch dam, it is appropriate to determine the content of stone powder of artificial marble sand of concrete arch dam of Jinping I Hydropower Station to be 20%.