Effects of Freeze-Thaw Cycles and Seawater Corrosion on the Behavior of Reinforced Air-Entrained Concrete Beams with Persistent Loads
Publication: Journal of Cold Regions Engineering
Volume 27, Issue 1
Abstract
The effects of freeze-thaw cycles and seawater corrosion on the material properties of air-entrained concrete specimens and structural behavior of reinforced air-entrained concrete beams under persistent loads were investigated in the laboratory. The air content of the specimens was designed to be 3.2 and 6.1%. Results show that when subjected to alternating actions of freeze-thaw cycles and seawater immersion, the compressive strength of concrete decreased when the number of freeze-thaw cycles increased, with the ones with higher air content showing better resistance to freeze-thaw attack. In the case of reinforced air-entrained concrete beam, the presence of persistent loads accelerated the structural behavior deterioration process. When the persistent load reached half of the ultimate load, the reduction of the ultimate load and ductility was found to be a couple of times greater than those without the persistent load. Compared to the beams with 3.2% air content, the yield load, the ultimate load, and the ductility of the beams with 6.1% air content increased by 0.5, 2.5, and 13.2%, respectively. It was concluded that air entrainment has a more considerable effect on enhancing the ductility of reinforced concrete structures in cold coastal regions.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This work is part of the projects financially supported by the Chinese National Natural Science Foundation (NSF) Grant Nos. 51078015 and 51178020. The writers gratefully acknowledge the financial support received from the NSF.
References
ASTM. (2010). “Standard test method for air content of freshly mixed concrete by the pressure method.” C231/C231M, ASTM International, West Conshohocken, PA.
Diao, B., Sun, Y., Cheng, S. H., and Ye, Y. H. (2011). “Effect of mixed-erosion freeze-thaw cycles and persistent loading on the behavior of reinforcement concrete beams.” J. Cold Reg. Eng., 25(1), 37–52.
Djerbi, A., Bonnet, S., Khelidj, A., and Baroghel-bouny, V. (2008). “Influence of traversing crack on chloride diffusion into concrete.” Cem. Concr. Res., 38(6), 877–883.
Gowripalana, N., Sirivivatnanonb, V., and Lim, C. C. (2000). “Chloride diffusivity of concrete cracked in flexure.” Cem. Concr. Res., 30(5), 725–730.
Jaffer, S. J., and Hansson, C. M. (2008). “The influence of cracks on chloride induced corrosion of steel in ordinary Portland cement and high performance concretes subjected to different loading.” Corros. Sci., 50(12), 3343–3355.
Mehta, P. K. (2003). “Composition, microstructure, and properties of concrete.” Concrete in the marine environment, A. Bentur and S. Mindess, eds., Elsevier Science, London and New York, 29–36.
Mohammad, T. U., Otsuki, N., and Hamada, H. (2001). “Oxygen permeability in cracked concrete reinforced with plain and deformed bars.” Cem. Concr. Res., 31(5), 829–834.
Win, P. P., Watanabe, M., and Machida, A. (2004). “Penetration profile of chloride ion in cracked reinforced concrete.” Cem. Concr. Res., 34(7), 1073–1079.
Yoon, S., Wang, K. J., Weiss, W. J., and Shah, S. P. (2000). “Interaction between loading, corrosion, and serviceability of reinforced concrete.” ACI Mater. J., 97(6), 637–644.
Zheng, X., Diao, B., Sun, Y., and Zhang, W. (2010). “Study of deterioration mechanism of concrete in multi-aggressive and freeze-thaw environment.” J. Build. Struct., 31(2), 111–116.
Information & Authors
Information
Published In
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Jan 11, 2012
Accepted: Sep 30, 2012
Published online: Oct 1, 2012
Published in print: Mar 1, 2013
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.