Out-of-Plane Behavior of In-Plane Damaged Masonry Infills Retrofitted with TRM and Thermal Insulation
Publication: Journal of Composites for Construction
Volume 27, Issue 6
Abstract
The effect of in-plane damage on the out-of-plane response of retrofitted and thermally insulated masonry infills was examined in this paper through a set of experiments performed on a medium-scale reinforced concrete frame. Structural reinforcement was realized through the use of textile reinforced mortar (TRM), while expanded polystyrene boards were used for thermal insulation. Various specimen configurations were tested both in- and then out-of-plane sequentially for each infill specimen. Experimental results have shown that the TRM-based strengthening scheme can improve the out-of-plane response of masonry infills both in terms of strength and stiffness, especially in the case of predamaged walls, where strength increases of above 80% were achieved. The addition of insulation arranged in a sandwich configuration resulted in a slight out-of-plane improvement but was not as effective in the case of predamaged infills due to prior in-plane loading, which caused partial debonding of the board. An analytical model is also proposed and validated against the experimental data, which can predict the out-of-plane behavior of a masonry infill while also accounting for the existence of reinforcement and prior damage. Finally, using the same model in a number of case studies, generalized response diagrams are produced and a set of simplified empirical equations is suggested.
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Data Availability Statement
The data from the in- and out-of-plane experiments of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The research work was partially supported by the Hellenic Foundation for Research and Innovation (HFRI) under the HFRI PhD Fellowship grant (Fellowship Number: 62) and under the 1st Call for Research Projects to support Faculty members and Researchers and the procurement of high-cost research equipment (Grant Number: 1962).
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Journal of Composites for Construction
Volume 27 • Issue 6 • December 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Mar 25, 2023
Accepted: Jul 21, 2023
Published online: Sep 15, 2023
Published in print: Dec 1, 2023
Discussion open until: Feb 15, 2024
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