Strengthening of RC columns by longitudinal CFRP sheets: Effect of strengthening technique

Moshiri, Niloufar; Hosseini, Ardalan; Mostofinejad, Davood

doi:10.1016/j.conbuildmat.2015.01.040

Cited by 56 publications

(12 citation statements)

References 22 publications

(44 reference statements)

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“…From the failure load graph, it can be observed that when the width of ratio increased, the load also increased as shown in figure 4. The failure load for each width ratio resulted in different modes of failure as discussed in [16]. One control prism and four CFRP strengthened concrete prisms experienced different noticeable failure loads respectively.…”

Section: Effect Of Width Ratio On Concretementioning

confidence: 99%

See 1 more Smart Citation

Failure Behaviour of Concrete Prisms Strengthened by Various Bond Widths of Carbon Fibre Reinforced Polymer (CFRP)

et al. 2017

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Abstract. The use of fibre reinforced polymers (FRP) for external strengthening of concrete structures in various forms such as laminates and sheets has become moderately common. FRP is more effective as it provides a better solution in terms of properties and application. The effectiveness of the FRP strengthening system lies in the bond between concrete and FRP which is affected by various factors such as bond length of FRP, bond width, resin hardening and surface preparation. In certain cases, bond width is a major factor which ensures that the structure can be strengthened properly. This paper focuses mainly on the failure behaviour of concrete prisms strengthened by various bond width ratios of carbon Fibre Reinforced Polymer (CFRP) which are 20mm (0.27), 40mm (0.53), 60mm (0.8) and 75mm (1) respectively. A total of fifteen strengthened prisms measuring 75 mm x 75 mm x 350 mm were cast for a three-point load test. Twelve strengthened prism specimens were externally strengthened with CFRP and three specimens were designated as control. The findings show that a greater width ratio of CFRP will strengthen concrete prisms greatly and will result in different types of failure modes.

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Section: Effect Of Width Ratio On Concretementioning

confidence: 99%

“…The CFRP was attached to the concrete prism as illustrated in Fig. 2 and the prism surface was grinded to obtain a rough surface to ensure perfect bonding and a clean condition [16]. Then the CFRP was attached to the concrete prisms and cured for 7 days at room temperature.…”

Section: Cfrp Strengtheningmentioning

confidence: 99%

Failure Behaviour of Concrete Prisms Strengthened by Various Bond Widths of Carbon Fibre Reinforced Polymer (CFRP)

et al. 2017

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“…For this purpose, 95 validated experimental data were collected from experimental studies about the monotonic axial behaviour of FRP‐confined circular reinforced concrete columns (Abdelrahman & El‐Hacha, ; Benzaid, Mesbah, & Chikh, ; Chastre & Silva, ; Demers & Neale, ; Eid, Roy, & Paultre, ; M N S Hadi, ; Muhammad N. S. Hadi, Hasan, & Sheikh, ; Muhammad N.S. Hadi, ; Issa, Alrousan, & Issa, ; Matthys, Toutanji, & Taerwe, ; Moshiri, Hosseini, & Mostofinejad, ; Mostofinejad & Torabian, ; Silva, ; Yin, Huang, Yan, & Zhu, ). For homogeneity of the data, only full‐wrapped circular columns were chosen.…”

Section: Experimental Datamentioning

confidence: 99%

Adaptive neuro‐fuzzy inference modelling and sensitivity analysis for capacity estimation of fiber reinforced polymer‐strengthened circular reinforced concrete columns

et al. 2019

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In this study, a fuzzy logic‐based model for predicting the ultimate strength of FRP‐confined circular reinforced concrete (RC) columns is presented. The adaptive neuro‐fuzzy inference system (ANFIS) model was generated using valid experimental data with seven input variables. Input parameters were considered in such a way that all the parameters affecting the compressive strength of the column were simultaneously involved. Different models for compressive strength of fiber reinforced polymer (FRP)‐confined concrete including the model in American Concrete Institute (ACI), to calculate the maximum stress endured by the column under axial load, were presented and compared with the results of the ANFIS model. Also, for similarity to other models, the ACI equation for calculating the maximum compressive strength tolerated by a column was considered without reducing coefficients as ACI‐N and was compared with other models. The results obtained from the ANFIS model were compared with results from other models. ANFIS model showed the highest accuracy among all models in predicting the experimental results.

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“…Numerous tests have been carried out by researchers to examine the behavior of structural members strengthened by using FRP sheets. In these studies, researchers investigated the effect of the type, amount, and pattern of FRP [6][7][8][9][10][11][12][13][14][15][16]. Owing to these test results, specifications [17,18] and numerical models have been developed to estimate the seismic behavior of deficient and strengthened RC buildings [2].…”

Section: Introductionmentioning

confidence: 99%

Cyclic behavior of GFRP strengthened infilled RC frames with low and normal strength concrete

Arslan

Durmuş

Hüsem

2018

Science and Engineering of Composite Materials

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This paper presents the experimental behavior of plane, non-strengthened and glass fiber reinforced polymer (GFRP) strengthened infilled reinforced concrete (RC) frames with low strength concrete (LSC) and normal strength concrete (NSC) under lateral reversed cyclic loading. For this purpose, eight full-scale, one-bay, one-storey plane and infilled (brick and aerated concrete blocks which are commonly used in RC construction) RC frames with LSC and NSC were produced and in-plane lateral loading tests were carried out. Test results indicate that infill walls considerably change the behavior of frames by increasing rigidity and load carrying capacity. By contrast, GFRP fabric used for strengthening of infilled RC frames improves ductility, load carrying and energy dissipation capacity of infilled frames with LSC and NSC as well. After all the test results were evaluated together, a GFRP strengthened brick infilled frame demonstrated the best performance under cyclic lateral loading.

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Strengthening of RC columns by longitudinal CFRP sheets: Effect of strengthening technique

Cited by 56 publications

References 22 publications

Failure Behaviour of Concrete Prisms Strengthened by Various Bond Widths of Carbon Fibre Reinforced Polymer (CFRP)

Failure Behaviour of Concrete Prisms Strengthened by Various Bond Widths of Carbon Fibre Reinforced Polymer (CFRP)

Adaptive neuro‐fuzzy inference modelling and sensitivity analysis for capacity estimation of fiber reinforced polymer‐strengthened circular reinforced concrete columns

Cyclic behavior of GFRP strengthened infilled RC frames with low and normal strength concrete

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