疏水材料处理下道路混凝土冻融性能研究

Study on Freeze-thaw Behavior of Road Concrete Treated with Hydrophobic Materials

为了研究疏水材料处理下的混凝土冻融性能,对不同含水率的疏水混凝土进行空气冻融循环试验。结果表明,在充分干燥状态时,经硅烷处理的混凝土吸水率最小;混凝土含水时,相较于其它混凝土,经醋酸钠处理的混凝土吸水率最小;硅树脂作用于完全饱和的混凝土时,混凝土的吸水保护效果优于含氟聚合物和硅烷;混凝土水分高于2.5%时,含氟聚合物对混凝土的保护高于硅烷。

In order to study the freezing-thawing performance of hydrophobic concrete,the air freezing-thawing test of hydrophobic concrete with different moisture content was carried out.The results show that,the water absorption rate of silane-treated concrete is the smallest when it is fully dry,and the water absorption rate of sodium acetate-treated concrete is the smallest when it contains water when the silicone resin acts on the fully saturated concrete,the water absorption protection effect of the concrete is better than that of the Fluoropolymer and silane.When the concrete moisture content is higher than 2.5%,the water absorption protection effect of the Fluoropolymer resin on the concrete is higher than that of the silane.