Multiscale modeling of steel corrosion in concrete based on micropore connectivity
Multiscale modeling of steel corrosion in concrete based on micropore connectivity
复制标题
基于微孔连通性的混凝土中钢筋腐蚀的多尺度建模
DOI:
10.1016/j.jobe.2021.103855
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发表时间:
2022
影响因子:
6.4
通讯作者:
Ishida Tetsuya
中科院分区:
文献类型:
--
作者:
Ohno Motohiro;Limtong Pakpoom;Ishida Tetsuya
This paper presents coupled multiscale models of steel corrosion in concrete, focusing on micropore connectivity. The ohmic control is represented by the effective surface area of steel in contact with interconnected pore solution. The oxygen diffusion control is simulated based on oxygen transport through the Nernst's diffusion layer assumed in the connected pore solution. The model validation with experimental data of multiple previous studies indicates that both the exponential change of corrosion current under the ohmic control and the oxygen diffusion control for higher relative humidity (RH) levels can be reasonably simulated. Also, a parametric study on water-to-cement ratios implies that moisture in nm-scale micropores is not involved in corrosion reactions. Moreover, 10-year-long simulations indicate that the long-term weight loss of steel is significantly affected by external RH. Therefore, for accurately predicting the long-term corrosion in real reinforced concrete structures, collecting actual RH data in the surrounding environment is important.
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影响因子:
2
作者:
Tatsuya Nukushina;Yuya Takahashi;T. Ishida
通讯作者:
Tatsuya Nukushina;Yuya Takahashi;T. Ishida
影响因子:
7.4
作者:
Hussain, Raja Rizwan;Ishida, Tetsuya
通讯作者:
Ishida, Tetsuya
影响因子:
11.4
作者:
T. Ishida;Y. Luan;T. Sagawa;T. Nawa
通讯作者:
T. Ishida;Y. Luan;T. Sagawa;T. Nawa
影响因子:
11.4
作者:
Tiao Wang;T. Ishida
通讯作者:
Tiao Wang;T. Ishida
DOI:
10.1149/1.2428081
发表时间:
1961
期刊:
影响因子:
--
作者:
H. Uhlig
通讯作者:
H. Uhlig