Research on Application of the Combination of Three Kinds of Sand in Concrete Engineering
With the increase of national environmental protection efforts and the rapid development of the construction industry,the mining of natural sand is increasingly restricted,the supply of natural sand has failed to meet demand,and the problem of aggregate has become the greatest problem restricting the development of ready-mixed concrete industry.Three kinds of sand have their advantages and disadvantages in particle size and gradation,but the performance of concrete prepared using single sand cannot meet the requirements.Through the testing and analysis,it is concluded that,compared with concrete prepared using natural sand,concrete prepared using three kinds of sand can improve the workability of concrete,enhance the fluidity of concrete,and improve the strength and impermeability of concrete to a certain extent.
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