Abstract
An extensive experimental program has been set up to characterize the time-dependent deformation behavior of masonry, subjected to the creep failure mode. Different types of short-term creep tests were performed on small masonry specimens, which were constructed with air-hardening lime mortar. To assess the influence of the carbonation process on creep behavior, several specimens were subjected to accelerated carbonation. The time-dependent deformations are modeled using a viscoelastic, rheological model which includes damage effects. The applicability of the model is validated by comparing theoretical and experimental results and extending the time frame to long-term predictions. Good agreement was found between experimental and simulated time-dependent deformations. The accuracy of the proposed model is estimated by including the scatter on the most important material parameters in the analysis.
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Acknowledgements
The authors express their thanks to the Flemish Fund for Scientific Research (FWO) for the doctoral grant, offered to Els Verstrynge. The authors highly appreciate the collaboration with the Politecnico di Milano and the University of Minho in this research area.
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Verstrynge, E., Schueremans, L. & Van Gemert, D. Time-dependent mechanical behavior of lime-mortar masonry. Mater Struct 44, 29–42 (2011). https://doi.org/10.1617/s11527-010-9606-8
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DOI: https://doi.org/10.1617/s11527-010-9606-8