Effect of CFRP strengthening on the response of RC slabs to hard projectile impact

Almusallam, Tarek; Al-Salloum, Yousef; Alsayed, Saleh H.; Iqbal, Rizwan A.; Abbas, Husain

doi:10.1016/j.nucengdes.2015.02.017

Cited by 37 publications

(7 citation statements)

References 40 publications

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“…Slabs with bidirectional aramid fiber reinforced polymer (AFRP) strengthening had both higher static and dynamic loading capacities than those with uni-directional AFRP/CFRP sheets, because the former could more effectively restraint the development of the bi-directional crack pattern experienced in the slabs. Almusallam et al (2015) conducted a series of high velocity penetration tests using rigid hemispherical nosed 0.8kg steel projectiles and corresponding finite element (FE) analysis of both un-strengthened and CFRP strengthened one way RC slabs. The strengthening system included one layer of unidirectional CFRP sheet on the bottom face with fibres in the slab span direction.…”

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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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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“…RC has been widely used in various of defense and civil engineering fields, such as bridges, dams, and nuclear power plant structures, to resist various loads [ 1 , 2 , 3 ]. RC slabs are the commonly used structural members in buildings, yet impact loads are often overlooked in the design of slabs [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

Protective Behaviors of Bio-Inspired Honeycomb Column Thin-Walled Structure against RC Slab under Impact Loading

Wang

Xia

2023

Biomimetics

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In order to protect the reinforced concrete (RC) slab structure from damage under some accidental conditions, such as impacting and explosion, we used bio-inspired honeycomb column thin-walled structure (BHTS) to serve as a buffer interlayer for the concrete structure inspired by the biological structure of beetle’s elytra. The mechanical properties of AlSi10Mg used to fabricate the BHTS buffer interlayer were determined by low- and medium-speed uniaxial compression tests and numerical simulations. Subsequently, based on the drop weight impact test models, the effect of the buffer interlayer on the response of the RC slab under the drop weight tests with different energy input was compared by the impact force and duration, maximum displacement and residual displacement, energy absorption (EA), energy proportion, and other indicators. The results show that the proposed BHTS buffer interlayer has a very significant protection effect on the RC slab under the impact of the drop hammer. Due to its superior performance, the proposed BHTS buffer interlayer provides a promising solution for EA of augmented cellular structures widely used in defensive structural components, such as floor slabs, building walls, etc.

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“…The literature review reveals that there are comprehensive studies where the effects of the steel reinforcement ratios and the applied input impact energy level on impact behavior of RC slabs have been investigated. Furthermore, the studies focused on the impact behavior of RC slabs strengthened using fiber reinforced polymer (FRP) material with various layouts, the pretensioned RC slabs, and the slabs manufactured from fiber‐RC have been presented in the literature 1–18 . However, the number of experimental studies examining the effects of different support conditions on the behavior of RC slabs subjected to impact loading is quite limited 19 …”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation of impact behavior of reinforced concrete slab with different support conditions

Yılmaz

Kıraç

Erdem

et al. 2020

Structural Concrete

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Reinforced concrete (RC) slabs may be subjected to impulsive dynamic loads such as blast and impact during their service period. Many studies related to the impact behavior of RC slabs have been presented. However, comprehensive studies where the effect of the support conditions on the impact behavior of RC slabs has been investigated are still limited. Thus, this study has focused on the effects of the support types and the support layouts on the dynamic responses and the failure modes of RC slabs subjected to impact loads. In the first part of the study, 9 two‐way RC slabs with various support layouts composed of fixed and hinged supports were tested under impact load via the drop‐weight test setup. Two different input impact energies were transmitted to RC slabs during impact loading. The time histories of the accelerations and displacements occurred in RC slabs, and the impact loads acting on RC slabs were recorded. The crack patterns due to the impact load were observed. The dynamic responses obtained by experiments have been interpreted in detail. In the second part, a detailed finite element procedure in which explicit dynamic analysis is performed has been introduced for verification of the experimental results. Good agreement between the experimental and the numerical results has been demonstrated. It has been concluded that proposed finite element procedures can be used for evaluation of the dynamic responses and failure modes of RC slabs under low‐velocity impact load.

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Effect of CFRP strengthening on the response of RC slabs to hard projectile impact

Cited by 37 publications

References 40 publications

A review of FRP strengthened concrete structures under extreme loading

A review of FRP strengthened concrete structures under extreme loading

Protective Behaviors of Bio-Inspired Honeycomb Column Thin-Walled Structure against RC Slab under Impact Loading

Experimental and numerical investigation of impact behavior of reinforced concrete slab with different support conditions

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