机制砂的优缺点及其在混凝土工程中的应用

The Advantages and Disadvantages of Machine-Made Sand and Its Application in Concrete Engineering

论文研究了天然砂与机制砂在混凝土工程中应用的优缺点,分析机制砂与天然砂的特性受混凝土的强度、弹性模量、干缩性、抗冻性、收缩徐变方面的影响。结果表明,在达到用砂性能指标的前提下,使用优质机制砂与天然砂一样进行混凝土施工生产是可行的。

This paper studies the advantages and disadvantages of the application of natural sand and machine-made sand in concrete engineering,and analyzes the characteristics of machine-made sand and natural sand affected by the strength,elastic modulus,dry shrinkage,frost resistance,shrinkage and creep of concrete.The results show that,on the premise of reaching the performance index of sand using,it is feasible to use high quality machine-made sand as well as natural sand for concrete construction and production.