港口航道与近海工程2024，Vol.61Issue(z1)：23-28,6.DOI:10.16403/j.cnki.ggjs2024S106
冻融与钢筋锈蚀作用下混凝土耐久性的研究
Research on the durability of concrete under freeze-thaw and steel corrosion effects
张婧艺 1左晓维1
作者信息
- 1. 中交一航局第五工程有限公司,河北秦皇岛 066000
- 折叠
摘要
Abstract
In order to study the combined effect of freeze-thaw and steel bar corrosion on the durability of concrete,based on different water cement ratios of concrete mix proportions,measures such as epoxy coating on the surface of steel bars,brushing silane on the surface of concrete,adding rust inhibitors or slag powder to the concrete,and using steel bars with different degrees of corrosion were taken to conduct freeze-thaw and steel bar corrosion tests.The results showed that after freeze-thaw cycles,concrete did not have any adverse effects on the corrosion of internal steel bars.The effect of different degrees of corrosion of steel bars on the freeze-thaw performance of concrete was not significant,and the ability of concrete structures to undergo freeze-thaw cycles was not reduced due to the corrosion of steel bars.The secondary hydration effect of embedded epoxy steel bars,surface coating with silane and admixtures is beneficial for the durability of concrete.However,when the thickness of the concrete protective layer is small,further verification is needed to determine whether concrete freeze-thaw has an impact on the corrosion of internal steel bars.关键词
冻融循环/钢筋锈蚀/电位/水胶比/保护层厚度Key words
freeze-thaw cycle/corrosion of steel bars/potential/water cement ratio/thickness of protective layer分类
交通工程引用本文复制引用
张婧艺,左晓维..冻融与钢筋锈蚀作用下混凝土耐久性的研究[J].港口航道与近海工程,2024,61(z1):23-28,6.
