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Experimental characterization of the out-of-plane behaviour of masonry infill walls made of lightweight concrete blocks

Title
Experimental characterization of the out-of-plane behaviour of masonry infill walls made of lightweight concrete blocks
Type
Article in International Scientific Journal
Year
2021
Authors
Marta Agante
(Author)
Other
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André Furtado
(Author)
FEUP
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Hugo Rodrigues
(Author)
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António Arêde
(Author)
FEUP
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Paulo Fernandes
(Author)
Other
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Humberto Varum
(Author)
FEUP
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Journal
Vol. 244
Pages: 1-24
ISSN: 0141-0296
Publisher: Elsevier
Scientific classification
CORDIS: Technological sciences > Engineering > Civil engineering > Structural engineering
FOS: Engineering and technology > Civil engineering
Other information
Authenticus ID: P-00V-A6P
Resumo (PT):
Abstract (EN): Masonry infill walls are widely spread over the reinforced concrete buildings due to different demands. The buildings' thermal energy efficiency is a top priority nowadays since many of the existing building stock comprises buildings with low energy performance. The buildings' external envelope is undergoing a transformation with the vertical hollow concrete blocks' appearance with high thermal and acoustic demands. However, recent evidence from a strong earthquake shows that the masonry infill walls are quite vulnerable to out-of-plane loadings and were responsible for many casualties, injuries and economic losses. Based on that, this work's main objective is to study the out-of-plane (OOP) behaviour of masonry infills made with vertical hollow concrete blocks. The experimental campaign comprises the OOP testing of three full-scale infill walls made up of these masonry units, one of them as-built without previous damage, one with previous damage due to an earlier in-plane test and the third one retrofitted. All the tests consisted of applying the loading-unloading-reloading history of imposed displacements in the OOP direction through a uniformly distributed load. The results will be presented in terms of OOP force-displacement responses, damage evolution and energy dissipation capacity. The test results are compared to assess the previous damage effect and the retrofit technique's effectiveness. A final study is presented concerning the masonry unit and slenderness effect with other literature results.
Language: English
Type (Professor's evaluation): Scientific
Contact: hrodrigues@ua.pt
No. of pages: 24
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