摘要
为提高清水混凝土的耐久性,对氟碳类、有机硅类以及丙烯酸类三种不同保护剂在不同涂刷方式下清水混凝土的耐久性进行了对比试验。结果表明:相比基准试验组,涂刷保护剂后的清水混凝土耐久性均有不同程度的提升,面漆对于耐久性的提升作用强于底漆,氟碳类保护剂的改善效果>有机硅类保护剂的改善效果>丙烯酸类保护剂的改善效果,且最佳涂刷方式为两层底漆+两层面漆;采用氟碳类保护剂进行两层底漆+两层面漆涂刷后,48 h吸水率、60 d碳化深度、60 d氯离子渗透深度相比基准试验组分别降低78.9%、65.3%和47.3%,150次冻融循环后质量损失率仅为0.53%,相对动弹性模量达到83.3%,抗压强度耐腐蚀系数达到0.892。
To improve the durability of plain concrete,comparative tests were conducted on the durability of plain concrete with three different protective agents,fluorocarbon,organosilicon,and acrylic,under different coating methods.The results show that compared with the benchmark test group,the durability of fair faced concrete after brushing protective agent is improved to varying degrees.The effect of finish paint on durability is stronger than that of primer.The improvement effect of fluorocarbon protective agent is better than that of silicone protective agent and acrylic protective agent,and the best brushing method is two layers of primer and two layers of finish paint;After applying two layers of primer and two layers of finish paint with fluorocarbon protective agent,the 48h water absorption,60 d carbonization depth and 60d chloride ion penetration depth were reduced by 78.9%,65.3%and 47.3%respectively compared with the benchmark test group.After 150 freeze-thaw cycles,the mass loss rate was only 0.53%,the relative dynamic elastic modulus was 83.3%,and the compressive strength corrosion resistance coefficient was 0.892.
作者
林峰
周殷弘
嵇朵平
秦靖闰
王森基
LIN Feng;ZHOU Yinhong;JI duoping;QIN Jingrun;WANG Senji(The Development Construction Co.,Ltd of China Construction Eighth Engineerings Division,Qingdao 266000,china)
出处
《粉煤灰综合利用》
2024年第6期43-47,67,共6页
Fly Ash Comprehensive Utilization
关键词
清水混凝土
保护剂
涂刷方式
耐久性能
fair faced concrete
protective agent
brushing method
durability
