TY - GEN
T1 - Corrosion Behavior of Hot-Dip Al Coating Contact with Concrete During Hardening Process of Concrete
AU - Gao, Y.
AU - Kainuma, S.
AU - Yang, M.
AU - Ishihara, S.
AU - Hashimoto, M.
AU - Inoue, D.
N1 - Funding Information:
This work was supported by JSPS KAKENHI under Grant Number JP19K15074 and JP19H02227. Any opinions, findings, and conclusions expressed in this study are those of the authors and don’t necessarily reflect the view of the JSPS KAKENHI.
Publisher Copyright:
© 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2022
Y1 - 2022
N2 - Hot-dip Al coating is an effective and economical protection method for steel structures. Hot-dip Al coated steel members have also been used in the case that contact with concrete. Al is an amphoteric metal that can react with acid and alkaline. Concrete is an alkaline material. The corrosion behavior of hot-dip Al coating contact with concrete is studied by measurement OCP and monitoring the change of pH during the hardening process of concrete. And the atmospheric test that simulates the actual structures. The corrosion products are analyzed by the diffraction of X-rays (XRD). The hot-dip Al coating can be dissolved during the hardening process. With the decreasing pH of concrete, the Al coating also has a relatively stable due to the passivation effect. In the dry and no stagnant water environment, the hot-dip Al coating has a better anti-corrosion behavior due to the passivation and shielding effect of complex calcium-aluminum compounds.
AB - Hot-dip Al coating is an effective and economical protection method for steel structures. Hot-dip Al coated steel members have also been used in the case that contact with concrete. Al is an amphoteric metal that can react with acid and alkaline. Concrete is an alkaline material. The corrosion behavior of hot-dip Al coating contact with concrete is studied by measurement OCP and monitoring the change of pH during the hardening process of concrete. And the atmospheric test that simulates the actual structures. The corrosion products are analyzed by the diffraction of X-rays (XRD). The hot-dip Al coating can be dissolved during the hardening process. With the decreasing pH of concrete, the Al coating also has a relatively stable due to the passivation effect. In the dry and no stagnant water environment, the hot-dip Al coating has a better anti-corrosion behavior due to the passivation and shielding effect of complex calcium-aluminum compounds.
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U2 - 10.1007/978-981-16-6932-3_21
DO - 10.1007/978-981-16-6932-3_21
M3 - Conference contribution
AN - SCOPUS:85125277163
SN - 9789811669316
T3 - Lecture Notes in Civil Engineering
SP - 239
EP - 245
BT - Proceedings of 2021 4th International Conference on Civil Engineering and Architecture
A2 - Kang, Thomas
A2 - Lee, Youngjin
A2 - Lee, Youngjin
PB - Springer Science and Business Media Deutschland GmbH
T2 - 4th International Conference on Civil Engineering and Architecture, ICCEA 2021
Y2 - 10 July 2021 through 12 July 2021
ER -