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Erschienen in:
2024 | OriginalPaper | Buchkapitel
Diagnostic and Prognostic Assessments on a 50 Year-Old Bridge Subjected to Severe Environmental and In-Service Conditions
verfasst von : Mohammad Khaleghi-Esfahani, Benoit Fournier, Benoit Bissonnette, Pierre-Luc Fecteau, David Conciatori, Samaneh Khani
Erschienen in: Proceedings of the 17th International Conference on Alkali-Aggregate Reaction in Concrete
Verlag: Springer Nature Switzerland
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Abstract
A unique opportunity was given to groups of researchers to study the condition of a large bridge structure that has been subjected to severe service conditions for more than 50 years. A number of concrete blocks were extracted from various structural elements of the bridge (top of a pier, slabs, exposed and protected sections of a crosshead beam, sections of exterior and interior longitudinal beams). Non-destructive testing, mechanical testing (compressive strength, Stiffness Damage Test), semi-quantitative petrographic examination (Damage Rating Index) and residual expansion testing were conducted on cores extracted from those elements. This paper provides a summary of the results obtained so far from the laboratory investigations on the cored specimens.