水性环氧防水涂层材料对混凝土吸水性能的影响  

Research on the Effect of Waterborne Epoxy Resin Coating on Water-absorption Properties of Concrete

作　　者：阮峥[1] 刘朝辉[1] 成声月 叶圣天[1] 

机构地区：[1]后勤工程学院化学与材料工程系,重庆401311

出　　处：《表面技术》2015年第4期97-103,共7页Surface Technology

基　　金：全军后勤科研计划项目(CY112C014)~~

摘　　要：目的研究E16和E44两种水性环氧防水涂层材料对混凝土试块吸水性能的影响,以比较两种防水材料的性能。方法分别对两种防水涂层材料设计不同的涂层配合比和涂层厚度,进行混凝土毛细吸水实验,对比混凝土试块在喷涂防水涂层材料前后的毛细吸水系数变化,以此评价防水涂层材料对混凝土试块吸水性能的影响。结果涂层混凝土试块的吸水系数随涂层厚度的增加而减小。在一定范围内,涂层混凝土试块的吸水系数随n(胺氢)/n(环氧基)的增大而先减小,后增大。兼顾性能与成本,确定E16和E44两种防水涂层材料的配合比分别为n(E16)∶n(Anquamine721)=1∶1,n(E44)∶n(Anquamine 721)=1∶0.9,涂层喷涂厚度皆为(300±20)μm。此时,E16和E44两种涂层混凝土试块的吸水系数分别为各自对应空白混凝土试块的3.5%和3.4%。结论相比之下,E44防水涂层材料对混凝土试块吸水性能的影响较大。Objective To study the effect on water absorption performance of concrete based on two water-based epoxy waterproofing coating materials E16 and E44 so as to compare the performance of the two kinds of waterproof materials. Methods Different mixture proportion and thickness were designed respectively for the two kinds of waterproofing coatings. The effect on water absorption performance of concrete was evaluated through the concrete capillary water absorption test,by which the absorption coefficient was compared before and after spraying the coatings on the concrete. Results The absorption coefficient of coated concrete block decreased with the increase of coating thickness. Within a certain range,the absorption coefficient of the coated concrete block first decreased and then increased with the increase of n（ amine hydrogen equivalent） / n（ epoxy groups）. With regard to both performance and cost,the proportion of E16 and E44 waterproof coating materials were determined as n（ E16） ∶ n（ Anquamine721） = 1∶ 1,n（ E44） ∶ n（ Anquamine 721） = 1∶ 0. 9,the coating thickness was（ 300 ± 20） μm,where,the water absorption coefficients of two kinds of coatings were 3. 5% and 3. 4% corresponding to the concrete block. Conclusion By contrast,E44 waterproof coating has more influence on the water absorption coefficient of the coated concrete block.

关 键 词：水性环氧树脂 防水涂层 混凝土 吸水性能 

分 类 号：TQ633[化学工程—精细化工]