Numerical 3D modelling of anchorage, corrosion and spalling
2015 (English)In: Concrete - Innovation and Design: fib Symposium Proceedings, Technical University of Denmark , 2015, p. 331-332Conference paper, Published paper (Refereed)
Abstract [en]
The aim of this study is to enhance our understanding of anchorage capacity in reinforced concrete structures with corrosion-induced cover spalling. Our objective was to study the influence of corrosion-induced cover spalling on bond strength. Thus, earlier developed bond and corrosion models suited for detailed 30 fnite element (FE) analysis were first combined with a new computation scheme to simulate corrosion-induced cover spalling. The 30 FE analyses were validated through experiments. The application of 30 FE analysis showed that the corrosion of stirrups advances the emergence of cracking and spalling, while bond strength is only slightly influenced by the corrosion of stirrups after cover spalling if early yielding of stirrups had not taken place. Moreover, it was shown that stresses in the stirrups due to corrosion in adjacent bars rapidly diminished within a short distance fom the main bar, and that the corrosion of stirrups influenced the shear capacity more prominent than the induced stresses in stirrups due to the corrosion of main bars.
Place, publisher, year, edition, pages
Technical University of Denmark , 2015. p. 331-332
Keywords [en]
30 modelling, Anchorage, Assessment, Corrosion, Reinforcement, Spalling, Anchorages (foundations), Bond strength (materials), Concretes, Reinforced concrete, 3D modelling, Corrosion models, FE analysis, Induced stress, Shear capacity
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-42345Scopus ID: 2-s2.0-85015453356OAI: oai:DiVA.org:ri-42345DiVA, id: diva2:1384139
Conference
2015 fib Symposium: Concrete - Innovation and Design, 18 May 2015 through 20 May 2015
2020-01-092020-01-092020-12-01Bibliographically approved