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EXPERIMENTAL SETUP FOR CHARACTERIZATION OF LONG TERM BOND AND CRACK WIDTHS IN RC TIES UNDER CONSTANT AXIAL FORCE



Author(s): Carlos Sousa (1), Mário Pimentel (1), Amin Abrishambaf (1), Rui Faria (1), Miguel Azenha (2)
Paper category: Proceedings
Book title: SynerCrete’18 International Conference on Interdisciplinary Approaches for Cement-based Materials and Structural Concrete
Editor(s): Miguel Azenha, Dirk Schlicke, Farid Benboudjema, Agnieszka Jędrzejewska
ISBN: 978-2-35158-202-2
e-ISBN: 978-2-35158-203-9
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 613-618
Total Pages: 6
Language : English


Abstract: Crack openings in reinforced concrete (RC) ties are usually calculated as the integral of the relative strains between steel and concrete along the transfer length. The contribution of shrinkage strains (of concrete within the transfer length) to the long-term crack openings is, still today, an unsolved issue. In this context, this paper starts by summarizing common procedures for calculating crack openings in thin RC ties or tensile chords. Then, a short
parametric analysis is shown to illustrate the relevance of shrinkage strains in crack openings calculations. Finally, a new test setup, developed for characterization of long-term crack widths and bond stresses between steel and concrete (taking into account the shrinkage influence), is presented.


Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00


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