The conclusion is as follows: 1. Aggregate grading and sand cement ratio have obviously influence on the strength. And the consideration should involve strength, construction operation and economy.

  • 集料级配和砂胶比对强度存在显著的影响,应综合考虑强度、施工操作性和经济性加以选择。

  • 互联网摘选 2025-01-19 23:55:38

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