Plane and vaulted masonry elements strengthened by different techniques – Testing, numerical modeling and nonlinear analysis

Hamdy, Gehan; Kamal, Osama; Al-Hariri, Osama; El-Salakawy, Tarik

doi:10.1016/j.jobe.2017.11.009

Cited by 15 publications

(2 citation statements)

References 36 publications

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“…Figure 8 shows the destroyed reference specimen. The same observation was noted by researchers [16]. Graph for the beam with 0% fibre addition or the reference beam is not shown in Fig.…”

Section: Test Results and Discussionsupporting

confidence: 82%

“…New researches now tilt in introducing cementitious composites to compete with fibrous composites, which reduce reinforcing percentages and reduce the percentages of fibre additions [15]. Research has also been carried out to validate the experimented and analytical results of using different techniques for retrofitting purposes [16]. The clear difference between fibrous composites and engineered cementitious composites (ECC) can be said as ECC's are part of ultra-ductile composites families, which sustain higher load capabilities, tensile capabilities deflection capabilities with very low volume addition of fibres.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation of engineered cementitious composites (ECC) retrofitted masonry structures

Endait

Kolhe

2020

SN Appl. Sci.

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Earthquake has proven the most damaging natural hazard in the world. So, structures in the earthquake-prone areas are need to be retrofitted prior and post of the calamity. It has been observed that most of the research solutions available focus upon reinforced concrete and steel constructions. Engineered cementitious composites (ECC) developed for economical utilization of fibres in retrofitting of masonry structures have been focused herein. The performance of beam-like masonry specimens subjected to their out-of-plane forces are experimentally and numerically investigated in this paper. Twelve beam-like specimens were cast and retrofitted with polyvinyl alcohol engineered cementitious composites (PVA-ECC) for the purpose. The casting of the retrofitting layer was done by varying percentages of PVA fibres that are 1%, 1.5% and 2% addition by the total volume of mortar. The performance of out-of-plane direction is investigated trough static two-point loading. The specimens were tested at a constant load increment of 0.1 mm per second. Work was conducted to simulate the ultimate cracking loads, maximum tension/deflection and load to deflection relationships of retrofitted and non-retrofitted specimens. Preliminary experimental data were used for numerically modelling the specimens in finite element package. Numerical results for deflection and strength were finally compared with experimental results. Experimental results revealed that the maximum load-carrying capacity with retrofitted samples increased by 11.8, 10.15 and 11.13% for 1%, 1.5% and 2% fibre addition, respectively. Simultaneously, deflection before complete collapse increases 5, 8 and 10% for 1%, 1.5% and 2% fibre additions. It can be finally said that utilization PVA-ECC as retrofitting material is an economical and easy method available.

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“…Figure 8 shows the destroyed reference specimen. The same observation was noted by researchers [16]. Graph for the beam with 0% fibre addition or the reference beam is not shown in Fig.…”

Section: Test Results and Discussionsupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%