表面涂层对混凝土吸水性能的影响

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (7): 2209-2214.

表面涂层对混凝土吸水性能的影响

刘芳¹, 熊锐², 钟勇强¹

1.淮阴工学院交通工程学院,淮安 223003;
2.长安大学材料科学与工程学院,西安 710061

收稿日期:2021-03-05 修回日期:2021-04-02 出版日期:2021-07-15 发布日期:2021-08-04
作者简介:刘芳(1978—),女,博士,讲师。主要从事混凝土耐久性及固废资源化利用的研究。E-mail:cherry1226@yeah.net
基金资助:
江苏省建设系统科技项目(2019ZD001229);江苏省产学研合作项目(BY2020194);青海省科技计划项目(2021-QY-216)

Influence of Surface Coating on Water Absorption Performance of Concrete

LIU Fang¹, XIONG Rui², ZHONG Yongqiang¹

1. Faculty of Transportation Engineering, Huaiyin Institute of Technology, Huai’an 223003, China;
2. School of Materials Science and Engineering, Chang’an University, Xi’an 710061, China

Received:2021-03-05 Revised:2021-04-02 Online:2021-07-15 Published:2021-08-04

摘要/Abstract

摘要： 采用四种表面涂层,以吸水率为评价指标,研究混凝土试件涂刷表面涂层后吸水性能的变化规律。试验结果表明,表面涂层在不同程度上降低了混凝土试件吸水率,其中聚氨酯涂层效果最佳,乳胶涂层效果最差,氟碳涂层、桥梁涂层效果介于聚氨酯涂层与乳胶涂层之间。混凝土试件的吸水率随着涂层涂刷遍数的增加逐渐降低,而降低幅度在减小,根据混凝土结构所处环境,从经济性角度选择适当的涂刷遍数。空白件及涂刷涂层的混凝土试件吸水率均随着水灰比的增大而提高。

关键词: 混凝土, 表面涂层, 吸水率, 耐久性, 水灰比, 涂层厚度

Abstract: Four kinds of surface coatings were used, and the water absorption rate was used as an evaluation index to study the change law of water absorption performance of the concrete specimens after the surface coating. The test results show that the surface coatings reduce the water absorption rate of the concrete specimens to varying degrees. The effect of polyurethane coating is the best, and the effect of emulsion coating is the worst. The effects of fluorocarbon coating and bridge coating are between the polyurethane coating and the emulsion coating. With the increase of times of coating brushing, the water absorption rate of the concrete specimens gradually decreases, but the reduction range decreases. According to the environment of the concrete structure, select the appropriate times of coating brushing from the economic point. With the increase of water-cement ratio, the water absorption rate of the blank and the painted concrete specimens increases significantly.

Key words: concrete, surface coating, water absorption rate, durability, water-cement ratio, coating thickness

中图分类号:

TU528

刘芳, 熊锐, 钟勇强. 表面涂层对混凝土吸水性能的影响[J]. 硅酸盐通报, 2021, 40(7): 2209-2214.

LIU Fang, XIONG Rui, ZHONG Yongqiang. Influence of Surface Coating on Water Absorption Performance of Concrete[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(7): 2209-2214.

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