Assessment of overlay masonry strengthening system under in-plane monotonic and cyclic loading using the diagonal tensile test

•The efficiency of FRCM overlays was assessed as part of a masonry strengthening system.•The strength increment of masonry walls was quantified by diagonal tensile tests.•Monotonic and cyclic in-plane loading was applied to evaluate the behaviour of the walls.•The key failure modes obtained experime...

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Bibliographic Details
Published in:Construction & building materials 2015-09, Vol.94, p.851-865
Main Authors: Almeida, João A.P.P., Pereira, Eduardo B., Barros, Joaquim A.O.
Format: Article
Language:English
Subjects:
Analysis
Assessments
Concrete
Construction materials
Cyclic loads
Economics
Experimental characterization
Fatigue (materials)
High ductility
In-plane cyclic tests
Infill masonry
Masonry
Mechanical properties
Shear capacity
Strengthening
Strengthening system
Tensile tests
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Summary:•The efficiency of FRCM overlays was assessed as part of a masonry strengthening system.•The strength increment of masonry walls was quantified by diagonal tensile tests.•Monotonic and cyclic in-plane loading was applied to evaluate the behaviour of the walls.•The key failure modes obtained experimentally and the basic mechanisms were examined.•Experimental results were discussed and compared to the analytical model predictions. The development of novel strengthening techniques to address the seismic vulnerability of masonry elements is gradually leading to simpler, faster and more effective strengthening strategies. In particular, the use of fabric reinforced cementitious matrix systems is considered of great potential, given the increase of ductility achieved with simple and economic strengthening procedures. To assess the effectiveness of these strengthening systems, and considering that the seismic action is involved, one important component of the structural behaviour is the in-plane cyclic response. In this work is discussed the applicability of the diagonal tensile test for the assessment of the cyclic response of strengthened masonry. The results obtained allowed to assess the contribution of the strengthening system to the increase of the load carrying capacity of masonry elements, as well as to evaluate the damage evolution and the stiffness degradation mechanisms developing under cyclic loading.
ISSN:0950-0618
1879-0526
DOI:10.1016/j.conbuildmat.2015.07.040