期刊
CORROSION ENGINEERING SCIENCE AND TECHNOLOGY
卷 56, 期 1, 页码 1-10出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/1478422X.2020.1789371
关键词
Chloride-induced corrosion; reinforced concrete; cracks; macro-cell current; time of wetness; RH
资金
- Statens vegvesen
Experimental study showed that the corrosion rate in cracked concrete depends on the duration of wetting and drying phases as well as the relative humidity during the drying phase. Lower ambient relative humidity during the drying phase results in faster crack drying, leading to a decrease in corrosion rate between wetting events.
Literature data on the influence of concrete cracks on corrosion propagation of reinforcing steel are contradictory. This might be due to very different exposure and test conditions but also to a lack of time-resolved data in cyclic wetting-drying exposure. Here, the influence of the environmental conditions on the corrosion rates in cracked concrete is studied experimentally. The results show that the corrosion rate in cracked concrete depends on the duration of wetting and drying phases and the relative humidity (RH) during the drying phase. The lower the ambient RH in the drying phase, the faster the cracks dry, which depresses the corrosion rate in the periods between the wetting events. A model is proposed to estimate corrosion rates in cracked concrete cyclic wetting/drying exposure.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据