Anticorrosion Effect of Silane Type Surface Penetrants on RC Degraded by Carbonation

2018 3rd International Conference on Building Materials and Construction

土木建筑工程

Kondo, T.^1 ; Kadota, Y.^1 ; Kawanishi, Y.^2 ; Nakamoto, Y.^2 ; Yokoi, K.^1 ; Yamada, Y.^1

National Institute of Technology, Kochi College Kochi, Japan^1

DAIDO Corporation, Co., Ltd, Osaka, Japan^2

关键词: Accelerated carbonation;    Concrete surface;    Corrosion behaviour;    Environmental conditions;    Half-cell potential;    Polarization resistances;    Reinforcing bar;    Water penetration;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/371/1/012005/pdf
DOI  :  10.1088/1757-899X/371/1/012005

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

We studied on the anticorrosion effect by applying silane type surface penetrants on RC degraded by carbonation. Two types of carbonation residue and two types of environmental conditions after accelerated carbonation were prepared and investigation was made on the corrosion behaviour of reinforcing bars by applying surface penetrants. As a result, by blocking water penetration by applying surface penetrants, there was a difference in anticorrosive effect in the behaviour of half-cell potential, polarization resistance, and investigation of reinforcing bar corrosion after the end of exposure. From the above, this paper reports on the possibility of realizing anticorrosion effect by suppressing invasion of moisture from concrete surface to carbonated RC.