关键词: 人工砂, 粗骨料, 控制标准, 优化加工工艺, 锦屏一级水电站

Abstract: The stone powder content of the manufactured marble sand used in Jinping I Hydropower Station exceeds the requirement of the regulation. There are too many rusty aggregate, rusty stone, marble and slate aggregate in the coarse aggregate. On the basis of the study on concrete property, the content control standard of various particles is recommended. The quality of the aggregate is improved through optimizing the manufacturing technique, which can ensure the property of the concrete and save the cost. So, the concrete quality of Jinping I Hydropower Station is guaranteed.

Key words: manufactured sand, coarse aggregate, control standard, optimized manufacturing technique, Jinping I Hydropower Station