特细砂的颗粒形态分析及特细砂混凝土试验研究

Superfine Sand Particles Morphology Analysis and Experimental Study of Superfine Sand Concrete and Mortar

特细砂已经演化成为一种建筑资源。利用扫描电镜,从微观的角度研究特细砂颗粒形貌,并配制特细砂混凝土及砂浆作为试验辅助研究。结果表明:辽河特细砂颗粒微观形貌凹凸不平,棱角较多,表面粗糙,因此比表面积大,在配制混凝土时需水量大,这个影响在砂浆中尤为显著。

The superfine sand has evolved into a building resource. In this paper, the scanning electron microscopy is applied to observe the superfine sand from a micro scope, and make superfine sand concrete and mortar as experimental test. The results show that the superfine sand in Liao River has more uneven edges and corners and rough surface, so the specific surface area is big. Therefore water demand is big when it is used in the preparation of superfine sand concrete, and the effect in the superfine sand mortar is particularly significant.