机制砂泵送混凝土配合比的设计与研究

Design and research of artificial sand pumping concrete mix

应用正交试验方法找出了适合工程使用的机制砂种类,并采用对比试验方法找到了较为经济的水泥用量,使机制砂成功运用于渝怀铁路万家山隧道施工。

Orthogonal experiments are applied to find a suitable type of artificial sand,and comparative test methods are used to find more economic amount of cement.Concrete with that type of artificial sand is applied to Wanjiashan tunnel of Chongqing-Huaihua railway successfully.