Time to surface cracking and crack width of reinforced concrete structures under corrosion of multiple rebars
Xi, Xun and Yang, Shangtong (2017) Time to surface cracking and crack width of reinforced concrete structures under corrosion of multiple rebars. Construction and Building Materials, 155. pp. 114-125. ISSN 0950-0618 (https://doi.org/10.1016/j.conbuildmat.2017.08.051)
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Abstract
Concrete cover cracking caused by corrosion of reinforcement is one of major deterioration mechanisms for reinforced concrete structures. In practice, time to surface cracking and crack width evolution are of significance in regards to the assessment of serviceability of reinforced concrete structures. Literature review suggests that, although considerable research has been undertaken on corrosion-induced concrete cracking, little has been focused on corrosion of multiple reinforcing bars, especially by considering the non-uniform corrosion process. In this paper, a time-dependent non-uniform corrosion model is established. A cohesive crack model is then formulated to simulate arbitrary cracking in the whole cover of concrete structures. Two typical cover failure modes (i.e., “delamination” and “combined delamination and corner spalling”) have been simulated under the non-uniform corrosion of multiple reinforcing bars and found dependent on spacing of reinforcement and fracture energy of concrete. The effects of corrosion, geometric and mechanical parameters on the time to surface cracking after corrosion initiation and the crack width evolution are also investigated and discussed. The developed model is partially verified by comparing the results with those from experimental tests on uniform corrosion of multiple reinforcing bars.
ORCID iDs
Xi, Xun and Yang, Shangtong ORCID: https://orcid.org/0000-0001-9977-5954;-
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Item type: Article ID code: 62274 Dates: DateEvent30 November 2017Published18 August 2017Published Online9 August 2017AcceptedSubjects: Technology > Engineering (General). Civil engineering (General) Department: Faculty of Engineering > Civil and Environmental Engineering Depositing user: Pure Administrator Date deposited: 07 Nov 2017 16:18 Last modified: 30 Sep 2024 00:24 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/62274