Impact resistant behaviour of RC slab strengthened with FRP sheet

Bhatti, Abdul Qadir; Kıshı, Norimitsu; Tan, Kiang Hwee

doi:10.1617/s11527-011-9742-9

Cited by 39 publications

(22 citation statements)

References 23 publications

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“…The comparison slab of the analysis consists of specimens strengthened with FRP, steel fiber reinforced concrete (SFRC), and UHPC. Bhatti et al [ 6 ] studied the test specimens retrofitted by FRP sheets, and the size of the slab is similar to the specimen performed in this study. The reaction force was slightly smaller than that of NSC-NF, but there was a large deflection and residual deflection compared to the specimen used in this study.…”

Section: Resultsmentioning

confidence: 94%

Effect of Strengthening Methods on Two-Way Slab under Low-Velocity Impact Loading

et al. 2020

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In this study, the performance of reinforced concrete slabs strengthened using four methods was investigated under impact loads transferred from the top side to bottom side. The top and bottom sides of test slabs were strengthened by no-slump high-strength, high-ductility concrete (NSHSDC), fiber-reinforced-polymer (FRP) sheet, and sprayed FRP, respectively. The test results indicated that the test specimens strengthened with FRP series showed a 4% increase in reaction force and a decrease in deflection by more than 20% compared to the non-strengthened specimens. However, the specimen enhanced by the NSHSDC jacket at both the top and bottom sides exhibited the highest reaction force and energy dissipation as well as the above measurements because it contains two types of fibers in the NSHSDC. In addition, the weight loss rate was improved by approximately 0.12% for the NSHSDC specimen, which was the lowest among the specimens when measuring the weight before and after the impact load. Therefore, a linear relationship between the top and bottom strengthening of the NSHSDC and the impact resistance was confirmed, concluding that the NSHSDC is effective for impact resistance when the top and bottom sides are strengthened. The results of the analysis of the existing research show that the NSHSDC is considered to have high impact resistance, even though it has lower resistance than the steel fiber reinforced concrete and ultra-high-performance-concrete, it can be expected to further studies on strengthening of NSHSDC.

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Section: Resultsmentioning

confidence: 94%

Effect of Strengthening Methods on Two-Way Slab under Low-Velocity Impact Loading

et al. 2020

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“…Though the choice of the FRP material for increasing the impact capacity is still a matter of argument, in some cases, the impact resistance of AFRP is considered as being higher than those of other FRPs. Around 20% and 33% increments in the impact load capacity were observed from the study [70] after strengthening a RC slab by using CFRP and AFRP bidirectional sheets. Therefore, the impact strength of a FRP-strengthened RC structure greatly depends on the material characteristics, impact energy, stiffness, loading rate, and strengthening configuration [68].…”

Section: Impact Behaviourmentioning

confidence: 94%

“…It was reported that 15% [68] increase in impact strength and 96% increase in shear strength [13] are observed in a FRP-strengthened RC beam which was shear-deficient. Strengthening can be carried out by using uni/cross directional fibres, especially cross directional carbon and aramid sheets having high capacity to resist orthogonal impact forces [70]. Though the choice of the FRP material for increasing the impact capacity is still a matter of argument, in some cases, the impact resistance of AFRP is considered as being higher than those of other FRPs.…”

Section: Impact Behaviourmentioning

confidence: 99%

Performances, challenges and opportunities in strengthening reinforced concrete structures by using FRPs – A state-of-the-art review

Siddika

Mamun

Ferdous

et al. 2020

Engineering Failure Analysis

184

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“…Bhatti et al (2011) conducted a series of falling-weight low speed impact tests one-way slabs. All the slabs were retrofitted with FRP sheets bonded on the bottom face.…”

Section: Frp Retrofitted Concrete Slabsmentioning

confidence: 99%

A review of FRP strengthened concrete structures under extreme loading

Chen¹,

Xie

Tao

et al. 2015

Proceedings of the Second International Conference on Performance-Based and Life-Cycle Structural Engineering (PLSE 2015)

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Many concrete structures are vulnerable to extreme loadings such as accidental impact, terrorist attack and earthquake disasters. Retrofitting of existing concrete structures for enhanced performance under these loadings has been an important topic of research for a long time, especially since the 911 terrorist attack. Among the different retrofitting techniques, external bonding of fibre reinforced polymer (FRP) composites has been a popular one. This paper presents a brief review of recent research on FRP strengthened concrete structures under blast, impact, earthquake and cyclic loading.

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Impact resistant behaviour of RC slab strengthened with FRP sheet

Cited by 39 publications

References 23 publications

Effect of Strengthening Methods on Two-Way Slab under Low-Velocity Impact Loading

Effect of Strengthening Methods on Two-Way Slab under Low-Velocity Impact Loading

Performances, challenges and opportunities in strengthening reinforced concrete structures by using FRPs – A state-of-the-art review

A review of FRP strengthened concrete structures under extreme loading

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