水泥复合砂浆对混凝土背水面抗渗试验研究

Experimental Study on Anti-permeability Influence of Composite Cement Mortar to the Dorsal Surface Concrete

通过在混凝土背水面涂抹普通水泥砂浆及水泥复合砂浆的试验,对比了普通水泥砂浆与水泥复合砂浆对混凝土抗渗性能的影响;研究了水泥复合砂浆厚度与添加剂含量对抗渗效果的影响.试验结果表明,水泥复合砂浆相比普通水泥砂浆更为显著地提高混凝土抗渗性能,且在一定范围内,水泥复合砂浆厚度或添加剂含量越高,抗渗效果越好.将水泥复合砂浆涂抹在混凝土背水面,便于地下室内、隧道内操作,极大地方便了施工,对实际工程有广泛的应用价值.

By testing painted ordinary cement mortar and composite cement mortar on the dorsal surface of concrete, the effect of ordinary cement mortar and composite cement mortar on concrete impermeability was compared. The influence of composite cement mortar thickness and additive content on impermeability effect was studied. Test results have indicated that composite cement mortar improves concrete impermea- bility more significantly than ordinary cement mortar. Within a certain range, the thicker the additive con- tent or composite cement mortar, the better the permeability effect. Painting the composite cement mortar on the dorsal surface of concrete is easy to operate in basements and tunnels, which greatly facilitates the construction,so there is a wide range of practical engineering applications.