Development of chloride-induced corrosion in pre-cracked RC beams under sustained loading: Effect of load-induced cracks, concrete cover, and exposure conditions - INSA Toulouse - Institut National des Sciences Appliquées de Toulouse Access content directly
Journal Articles Cement and Concrete Research Year : 2015

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.
No file

Dates and versions

hal-01849732 , version 1 (26-07-2018)

Identifiers

Cite

Linwen Yu, Raoul François, 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, 2015, 67, pp.246--258. ⟨10.1016/j.cemconres.2014.10.007⟩. ⟨hal-01849732⟩
39 View
0 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More