Abstract
Performance of fibre reinforced cementitious matrix (FRCM) strengthened masonry infills under sequential bi-directional earthquake induced lateral loading, which is far from well-understood, was experimentally investigated herein. A total of eight single bay reinforced concrete frames were constructed with unreinforced hollow concrete masonry infills, of these one was tested non-retrofitted that served as control test assembly and the remainder were strengthened using varying FRCM types and configurations. The test assemblies were subjected to cyclic in-plane loading gradually increasing to 1% story drift, replicating lateral loading due to a moderate earthquake. These already in-plane damaged test assemblies were then subjected to gradually increasing monotonic OOP loading until failure. Resulting damage patterns, failure mechanisms, measured force-displacement response and stiffness characteristics were discussed. FRCM strengthening delayed the onset of out-of-plane cracking, instigated a more controlled failure mode, with strengthened infills exhibiting out-of-plane strength of 1.7–2.0 times that of the control specimen.
Original language | English |
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Pages (from-to) | 396-422 |
Number of pages | 27 |
Journal | International Journal of Masonry Research and Innovation |
Volume | 5 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2020 |
Keywords
- Damaged
- Fibre reinforced
- Infill
- Matrix
- OOP
- Out-of-plane
- Strength
ASJC Scopus subject areas
- Building and Construction
- Materials Science (miscellaneous)