Skip to Main content Skip to Navigation
Journal articles

Development of chloride-induced corrosion in pre-cracked RC beams under sustained loading: Effect of load-induced cracks, concrete cover, and exposure conditions

Abstract : This paper deals with corrosion initiation and propagation in pre-cracked reinforced concrete beams under sustained loading during exposure to a chloride environment. Specimen beams that were cast in 2010 were compared to specimens cast in 1984. The only differences between the two sets of beams were the casting direction in relation to tensile reinforcement and the exposure conditions in the salt-fog chamber. The cracking maps, corrosion maps, chloride profiles, and cross-sectional loss of one group of two beams cast in 2010 were studied and their calculated corrosion rates were compared to that of beams cast in 1984 in order to investigate the factors influencing the natural corrosion process. Experimental results show that, after rapid initiation of corrosion at the crack tip, the corrosion process practically halted and the time elapsing before corrosion resumed depended on the exposure conditions and cover depth. (C) 2014 Elsevier Ltd. All rights reserved.
Document type :
Journal articles
Complete list of metadatas

https://hal.insa-toulouse.fr/hal-01849732
Contributor : Insa Toulouse Scd <>
Submitted on : Thursday, July 26, 2018 - 2:40:51 PM
Last modification on : Thursday, June 4, 2020 - 4:22:04 PM

Identifiers

Citation

Linwen Yu, Raoul Francois, Vu Hiep Dang, Valerie l'Hostis, Richard Gagne. Development of chloride-induced corrosion in pre-cracked RC beams under sustained loading: Effect of load-induced cracks, concrete cover, and exposure conditions. Cement and Concrete Research, Elsevier, 2015, 67, pp.246--258. ⟨10.1016/j.cemconres.2014.10.007⟩. ⟨hal-01849732⟩

Share

Metrics

Record views

68