Page 19 - 涂料工业2024年第02期电子刊
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第54卷第 2 期 涂料工业 Vol. 54 No. 2
2024年 2 月 郭嘉相等:水工混凝土浸渍型防护涂料抗冰拔性能试验研究 Feb. 2024
PAINT & COATINGS INDUSTRY
水工混凝土浸渍型防护涂料抗冰拔性能试验研究
郭嘉相 ,何世钦 ,姚国友 ,王 辉 1
1
*1
2
(1. 北方工业大学土木工程学院,北京100144;
2. 苏州佳固士新材料科技有限公司,江苏苏州215000)
摘 要:高寒地区的水利大坝等水工混凝土建筑物在结冰期间易出现建筑外层与覆冰层发生抗
冰拔破坏的现象,降低了建筑物的耐久性和服役寿命。通过防护涂料中端羟基硅油(PDMS)掺杂不
同含量正硅酸乙酯(TEOS)后对水泥基抗冰拔防护性能影响的试验,以及不同浓度梯度的异丙醇
(IPA)掺量对涂料渗透性和耐腐蚀性影响的试验,研发出一种以TEOS、PDMS、PA和乙醇(EtOH)为主
I
要成分,用于高寒地区水利大坝迎水面的浸渍型防护涂料,并与其他品种涂料进行抗冰拔能力对比
试验。结果表明:涂料的抗冰拔性能随 TEOS 用量的增加先增高后降低,TEOS 在涂料中质量分数为
21% 时效果最好;添加 18%(质量分数)的 IPA 可有效减少涂料在使用过程中被污染而导致使用寿命 探
缩短的现象;所研发的防护涂料在与同类型涂料进行抗冰拔与水接触角对比试验中取得了较为良好 索
的效果,接触角为 121. 5°;提出的检测水泥基与冰层之间冰拔力的试验方法,可以作为检验水泥基涂
料抗冰拔能力的一种途径。 开
关键词:水工混凝土;浸渍型防护涂料;抗冰拔;正硅酸乙酯;异丙醇
发
中图分类号:TQ635. 55 文献标志码:A 文章编号:0253-4312(2024)02-0007-06
doi:10. 12020/j. issn. 0253-4312. 2023-185
Experimental Study on Ice Pulling Resistance of Impregnated
Protective Coatings for Hydraulic Concrete
1
1
2
Guo Jiaxiang ,He Shiqin ,Yao Guoyou ,Wang Hui 1
(1. School of Civil Engineering,North China University of Technology,Beijing 100144,China;
J
2. Suzhou Guardex New Material Technology Co Ltd Suzhou,iangsu 215000,China)
I
Abstract:t was easy for hydraulic concrete buildings such as hydraulic DAMS in high-
altitude/latitude and cold region to have the phenomenon of uplift failure between the outer
layer of the building and the ice cover during freezing,which reduced the durability and
service life of the buildings. The effects of different contents of ethyl orthosilicate
(TEOS)mixed with hydroxysilicone oil(PDMS)in cement based protective coatings on the ice
pulling resistance were tested,and the effects of different concentration gradient of isopropyl
alcohol(IPA)in solvents on the permeability and corrosion resistance of coatings were tested.
One kind of impregnated protective coatings with TEOS,PDMS,IPA and ethanol(EtOH)
as the main ingredients was developed to act on the water facing surface of water
conservancy DAMS in high-altitude/latitude and cold region,and the ice pulling resistance
通信作者:何世钦(1970—),女,博士,副教授,研究方向为高性能混凝土材料及混凝土结构耐久性。
本文规范引用格式:
郭嘉相,何世钦,姚国友,等. 水工混凝土浸渍型防护涂料抗冰拔性能试验研究[J]. 涂料工业,2024,54(2):7-11,19.
GUO J X,HE S Q,YAO G Y,et al. Experimental study on ice pulling resistance of impregnated protective coatings for hydraulic concrete [J]. Paint &
Coatings Industry,2024,54(2):7-11,19.
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