Non-uniform distribution of rust layer around steel bar in concrete
Non-uniform distribution of rust layer around steel bar in concrete
复制标题
混凝土中钢筋周围锈层分布不均匀
DOI：
10.1016/j.corsci.2011.08.045
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发表时间：
2011-12-01
影响因子：
8.3
通讯作者：
Jin, Weiliang
中科院分区：
文献类型：
--
作者：
Zhao, Yuxi;Hu, Bingyan;Jin, Weiliang
采用数字显微镜观察了氯盐暴露钢筋混凝土试件的锈层厚度。采用高斯函数描述腐蚀前沿的非均匀性，研究了模型中的非均匀性系数、扩展系数和均匀性系数等参数对锈层非均匀分布特征的描述。与其他研究者提出的模型相比，高斯模型能更好地描述非均匀锈层。讨论了腐蚀峰沿着钢筋周向的位置和腐蚀向钢筋全周扩展的条件。(C)2011爱思唯尔有限公司保留所有权利。
The thickness of rusted layers at steel/concrete interface from a chloride-exposed reinforced concrete specimen was observed by digital microscopy. The non-uniform corrosion front is presented by a Gaussian function, the parameters in the model, including the non-uniformity coefficient, the spread coefficient, and the uniformity coefficient, are studied to describe the non-uniform distribute characters of rust layer. Comparing with the models proposed by other researchers, the Gaussian model can describe the non-uniform rust layer better. The location of corrosion peak along the perimeter of rebar and the condition for corrosion spreading across the entire circumference of rebar are discussed. (C) 2011 Elsevier Ltd. All rights reserved.