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在天然砂资源日益枯竭的情况下,急需发展人工砂替代细骨料的推广应用。本试验就细度模数为2.2、2.8及3.2的三种不同规格人工砂,分别在“人工砂+天然砂”掺配使用及单掺直接使用情况下作为细骨料,应用于混凝土中对于拌合物的工作性能影响进行试验研究,从而形成不同细度人工砂应用于混凝土中的最佳优选方案,以实现兼顾混凝土工作性能和经济性的目的。
In the case of natural sand resources depletion, the urgent need to develop artificial sand instead of the promotion and application of fine aggregate. In this experiment, the fineness modulus of 2.2, 2.8 and 3.2 of three different specifications of artificial sand, respectively, in the “artificial sand + natural sand” mixed with the use of single-doped direct use as a fine aggregate, used in concrete In the experimental study of the impact of the working performance of the mixture to form the fineness of artificial sand used in the best choice of concrete in order to achieve the performance of both concrete and economic purposes.