苯丙乳液对改性混凝土氯离子渗透性能的影响

Effect of Styrene Acrylic Emulsion on the Chloride Ion Penetration Property of Modified Concrete

本文研究了养护制度、聚合物掺量对苯丙乳液改性混凝土抗氯离子渗透深度以及其微观结构的影响。结果表明,与28d标养相比,7d标养、21d室温养护,改性混凝土的抗氯离子渗透性能更好;随着聚合物掺量增加显著改善了改性混凝土中界面过渡区结构,并在水泥基体中形成了连续的三维网状结构,从而显著降低改性混凝土氯离子渗透深度,当聚合物掺量为7%时改性混凝土氯离子渗透深度较对比样降低了66.1%。

In this paper, the effect of curing system and polymer content on resistance to chloride ion penetration property and microstructure of styrene acrylic emulsion modified concrete were researched.The results indicate that in comparison with 28d standard curing,using 7d standard curing and 21d room temperature curing,the resistance to chloride ion penetration property of modified concrete is better.With the polymer content increased, the interface transition zone structure of modified concrete was significantly improved, and form a continuous three-dimensional network structure in the cement matrix,thus the chloride ion penetration depth of modified concrete was significantly reduced.When the polymer content of modified concrete is 7%, the chloride ion penetration depth was reduced by 66.1%.