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Advances in Materials Science and Engineering
Volume 2016, Article ID 9710678, 12 pages
http://dx.doi.org/10.1155/2016/9710678
Research Article

Influence of Freeze-Thaw Damage on the Steel Corrosion and Bond-Slip Behavior in the Reinforced Concrete

1School of Civil Engineering and Architecture, Suqian College, Suqian 223800, China
2Department of Structural Engineering, Tongji University, Siping Road, Shanghai 200092, China
3College of Civil Engineering, Qingdao University of Technology, Fushun Road, Qingdao 266033, China

Received 21 March 2016; Revised 19 June 2016; Accepted 11 July 2016

Academic Editor: Akihiko Kimura

Copyright © 2016 Fangzhi Zhu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper mainly studies the behavior of steel corrosion in various reinforced concrete under freeze-thaw environment. The influence of thickness of concrete cover is also discussed. Additionally, the bond-slip behavior of the reinforced concrete after suffering the freeze-thaw damage and steel corrosion has also be presented. The results show that the freeze-thaw damage aggravates the steel corrosion in concrete, and the results become more obvious in the concrete after suffering serious freeze-thaw damage. Compared with the ordinary concrete, both air entrained concrete and waterproofing concrete possess better resistance to steel corrosion under the same freeze-thaw environment. Moreover, increasing the thicknesses of concrete cover is also an effective method of improving the resistance to steel corrosion. The bond-slip behavior of reinforced concrete with corroded steel decreases with the increase of freeze-thaw damage, especially for the concrete that suffered high freeze-thaw cycles. Moreover, there exists a good correlation between the parameters of bond-slip and freeze-thaw cycles. The steel corrosion and bond-slip behavior of reinforced concrete should be considered serious under freeze-thaw cycles environment, which significantly impact the durability and safety of concrete structure.