The corrosion resistance performance of reinforcing steel in autoclaved aerated concrete

DOI

10.2991/978-94-6463-336-8_11How to use a DOI?

Keywords

Autoclaved aerated concrete (AAC); Reinforcing Steel; Anti-Corrosion; Carbonation; Mass loss

Abstract

Autoclaved aerated concrete (AAC) possesses advantages such as lightweight, excellent thermal insulation, and good seismic resistance, making it widely utilized as the wall material in building structures. However, the interior environment of AAC is neutral or weak alkaline, which makes the reinforcing steel inside prone to corrosion. Existing methods to enhance the corrosion resistance of reinforcing steel in AAC are relatively limited, and the impact of carbonation on the corrosion of reinforcing steel within AAC has not been adequately considered. Based on this, the present study investigated the influence of carbonation on the corrosion of reinforcing steel and conducted a comparative analysis of the individual and combined anti-corrosion measures, including reinforcing steel coatings, rust inhibitor powder, and AAC coatings. The results indicate that the complete carbonation of AAC has a negligible impact on the corrosion of reinforcing steel. The effectiveness in corrosion resistance ranks from highest to lowest as follows: surface coating on the reinforcing steel > 0.5% dosage of rust inhibitor powder > surface coating on the concrete. The composite anti-corrosion treatments result in a better rust inhibition effect. This study holds significant engineering value in improving the service life of AAC structures.

Copyright

© 2023 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Yunzhen Song
PY  - 2023
DA  - 2023/12/30
TI  - The corrosion resistance performance of reinforcing steel in autoclaved aerated concrete
BT  - Proceedings of the 2023 9th International Conference on Architectural, Civil and Hydraulic Engineering (ICACHE 2023)
PB  - Atlantis Press
SP  - 84
EP  - 94
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-336-8_11
DO  - 10.2991/978-94-6463-336-8_11
ID  - Song2023
ER  -