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Reliability analysis of corroded reinforced concrete beam with regards to anchorage failure
RISE - Research Institutes of Sweden, Samhällsbyggnad, CBI Betonginstitutet. Chalmers University of Technology, Sweden.
RISE - Research Institutes of Sweden, Samhällsbyggnad, Byggteknik.ORCID-id: 0000-0001-5879-7305
Lund University, Sweden.
Chalmers University of Technology, Sweden.
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2019 (Engelska)Ingår i: Life-Cycle Analysis and Assessment in Civil Engineering: Towards an Integrated Vision - Proceedings of the 6th International Symposium on Life-Cycle Civil Engineering, IALCCE 2018, CRC Press/Balkema , 2019, s. 337-344Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Reinforcement corrosion is a common problem in reinforced concrete infrastructure today, and it is expected to increase in the future. To simply replace the corroded structures with new ones requires large resources, both in financial and environmental terms. Therefore it is important that existing structures are used to their full potential, also after the onset of corrosion. This paper presents a reliability study of the anchorage capacity of a reinforced concrete beam including reinforcement corrosion. The sensitivity of the different input parameters is also studied. As expected, the results show that the reliability is reduced with corrosion; the magnitude depends to a large extent on the modelling uncertainty used for the bond model for corroded reinforcement. The sensitivity analysis shows an influence of corrosion also on the sensitivities of the input parameters, which is expected based on the properties of the underlying bond model. This paper demonstrates that probabilistic evaluations give valuable insight of the reliability, which can be used to prolong the service-life of existing infrastructure and save both money and the environment.

Ort, förlag, år, upplaga, sidor
CRC Press/Balkema , 2019. s. 337-344
Nyckelord [en]
Anchorages (foundations), Bond strength (materials), Concrete beams and girders, Electrochemical corrosion, Failure (mechanical), Life cycle, Reinforced concrete, Sensitivity analysis, Uncertainty analysis, Corroded reinforced concrete beams, Corroded reinforcement, Corroded structures, Existing structure, Input parameter, Probabilistic evaluation, Reinforced concrete beams, Reinforcement corrosion, Reliability analysis
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Naturvetenskap
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URN: urn:nbn:se:ri:diva-38569Scopus ID: 2-s2.0-85063951120ISBN: 9781138626331 (tryckt)OAI: oai:DiVA.org:ri-38569DiVA, id: diva2:1314888
Konferens
6th International Symposium on Life-Cycle Civil Engineering, IALCCE 2018, 28 October 2018 through 31 October 2018
Tillgänglig från: 2019-05-10 Skapad: 2019-05-10 Senast uppdaterad: 2019-08-12Bibliografiskt granskad

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