In the trial range, the effect of sand percentage and coarse aggregate gradation on the strength of concrete is not significant. And they could be certained by the pumpability and other technical indicators.

  • 在试验选定的研究范围内,砂率和粗骨料级配则对混凝土的强度影响不显著,可根据混凝土可泵性等其它技术指标确定其合理取值范围。

  • 互联网摘选 2025-01-19 23:55:38

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