建筑垃圾挂浆膜化机制对水泥砂浆性能的影响

Influence of Construction Waste Membrane Treatment on Properties of Cement Mortar

将二水石膏、胶粉、纤维素醚等原料对建筑垃圾再生砂进行膜化处理制备水泥砂浆,通过正交试验和方差分析研究了二水石膏、胶粉、纤维素醚对其性能的影响,得出了抗压强度效果最好的膜化配比为4%石膏、2%胶粉和0.6%纤维素醚,抗折强度效果最好的膜化配比为4%石膏、1%胶粉和0.2%纤维素醚,三种因素对其吸水率影响不大。试验结果表明,经膜化处理建筑垃圾制备的水泥砂浆的性能要优于未处理的建筑垃圾制备的水泥砂浆。

The dihydrate gypsum, powder, cellulose ethers and other raw materials are used for construction waste reclaimed sand membrane treatment and preparation of cement mortar, and the effect of dihydrate gypsum, powder, cellulose ethers on performance of cement mortar is studied by the method of orthogonal level analysis and variance analysis. The results show that the membrane proportion of mortar with the best compressive strength is 4% gypsum, 2% powder and0.6% cellulose ether, the membrane proportion of mortar with the best flexural strength is 4% gypsum, 1% powder and0.2% cellulose ethers, three factors have little effect on its absorption. The test results show that the performance of cement mortar treated by membrane treatment is superior to that of cement mortar untreated.