新型水泥混凝土桥面防水层性能试验研究

Experimental Study on Performance of New Waterproof Layer of Cement Concrete Bridge Deck

文章通过接触角试验和抗裂试验优选桥面防水材料,确定了其最佳用量与喷涂方式,并且对比了SEAL和SPC两种防水材料在不同的喷涂方式下的防水性能和抗裂性能,研究表明SEAL系列效果比SPC系列效果好。然后通过工业CT观察喷涂防水剂后的渗透情况,发现防水剂能渗透进混凝土里,渗透后混凝土表面密度更大,微观结构更为密实,憎水性能更好。

In this paper through the contact angle test and crack resistance test,the waterproof material of bridge deck is optimized,and the optimum dosage and spraying method are determined,further the waterproof and anti cracking properties of two kinds of waterproof materials SEAL and SPC are compared under different spraying methods.The research shows that the effect of SEAL series is better than SPC series.Then the seepage conditions after spraying waterproof agent are observed through the industrial CT,it is found that the waterproof agent can penetrate into the concrete,and after seepage the surface density of concrete is greater,the microstructure is more dense,and the hydrophobic properties is better.