孙星海1,刘 泽1,王军伟2,姜启衎1
孙星海,刘泽,王军伟,等.不同机制砂微观形貌和胶砂性能研究[J].混凝土与水泥制品,2021(1):85-89.
SUN X H,LIU Z,WANG J W,et al.Study on Microstructure and Mortar Properties of Different Machine-made Sands[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):85-89.
不同机制砂微观形貌和胶砂性能研究
孙星海1,刘 泽1,王军伟2,姜启衎1
孙星海,刘泽,王军伟,等.不同机制砂微观形貌和胶砂性能研究[J].混凝土与水泥制品,2021(1):85-89.
SUN X H,LIU Z,WANG J W,et al.Study on Microstructure and Mortar Properties of Different Machine-made Sands[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(1):85-89.
摘 要:为更好研究机制砂的合理应用,选取了3种不同岩性的机制砂,通过分级筛分后调配成Ⅱ区中砂,设计了三种不同级配的机制砂。研究了不同机制砂的化学组成、矿物组成和微观形貌,以及不同机制砂对胶砂性能的影响。研究表明:不同机制砂颗粒的长径比和圆形度有一定的差异,个别粒级的参数差异较大;级配对钙基机制砂胶砂强度影响没有硅基机制砂显著;细度模数较大时,钙基机制砂胶砂强度大于硅基机制砂。
Abstract: In order to study the reasonable application of machine-made sands, 3 kinds of machine-made sands with different lithology were selected and mixed into the middle sands of Area Ⅱ through classification and screening, and three different gradations of machine-made sands were prepared. The influence on the properties of mortar of the chemical composition, mineral composition, and micro-morphology of machine-made sands, different machine-made sands were analyzed. The results indicate that the slenderness ratio and roundness of different machine-made sands are different, and the parameters of individual grades are also different. The effect of gradation on the strength of silicon-based sands is more significant than that of calcium-based sands. When the fineness modulus is larger, the strength of calcium-based machine-made sand is higher than that of silicon-based machine-made sand.
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