Stress–strain model of confined concrete with Aramid FRP wraps

Djafar-Henni, Imane; Kassoul, Amar

doi:10.1016/j.conbuildmat.2018.08.013

Cited by 28 publications

(14 citation statements)

References 54 publications

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“…x a second arrangement of six pillars which have been dimensioned utilizing a test body approach in measurements diminished by a factor of 1/3 contrasted with the bar (P2). The use of the mathematical similitude rules brought about a calculation of 5x7x40 cm3 [12,13].…”

Section: Materials Of the Studymentioning

confidence: 99%

RETRACTED: Investigation of composite materials supported by carbon fiber fabric (TFC) in pre-cracked concrete beams

Karnoub

Huang

Antypas

2020

J. Phys.: Conf. Ser.

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This work is a commitment to breaking down the conduct of pillars that strengthened by composite materials. The investigation was helped out through an exploratory and logical examination on eleven strengthened concrete and fortified solid components underneath and decently strengthened, pre-split and afterward strengthened utilizing nearby carbon-fiber texture utilizing epoxy pitches. So as to consider the impact of the underlying splitting condition on the conduct, one of the bars was strengthened without being broken ahead of time and contrasted with a pre-broken and fortified bundle and afterward to another stacked in any event, when broken without breaking or hardening. In this examination, four beams were pre-broken and reinforced in the all-inclusive part and as an afterthought part with U-formed pieces of various measurements to keep away from division on one side and the investigation of rebuilding of the compound at the impact of shear then again. At long last, a similar report was directed between the last estimated exploratory obstruction and that registered by expository models.

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Section: Materials Of the Studymentioning

confidence: 99%

RETRACTED: Investigation of composite materials supported by carbon fiber fabric (TFC) in pre-cracked concrete beams

Karnoub

Huang

Antypas

2020

J. Phys.: Conf. Ser.

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“…This results justifies the main motivation of this study and shows that the models currently suggested by design codes may not be the most accurate and reliable ones. Regarding the models which are proposed for special type of FRP, such as those suggested by Lobo et al [37] or Djafar-Henni and Kassoul [18] as it was expected, their performance for general type of FRP is not satisfactory.…”

Section: Discussionmentioning

confidence: 99%

Proposition of new applicable strength models for concrete columns confined with fiber reinforced polymers

2019

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In the present paper, several well-known existing design-oriented relations for circular and rectangular columns confined with fiber reinforced polymers (FRP) are reviewed and their accuracy are compared using a comprehensive database set up by the experimental results extracted from the previous research works. The main motivation for this study is the fact that despite several performed studies to develop practical models for predicting compressive strength of concrete confined with fiber reinforced polymer wraps in the past two decades, which some of them are reviewed in the present paper, it is not known clearly that which model has the most accuracy and applicability. In addition to the performed review and evaluation, new and more accurate relations are proposed using nonlinear regression techniques and their accuracy verified using same experimental data. Based on the attained results, the new proposed relationships displayed better accuracy than the existing FRP confined concrete strength models. The average values of error for the proposed relations correspond to circular and square cross sections were about 13.0 and 15.5%, respectively.

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“…70,71,79 Details of the utilized database of experimental results for the performance evaluation of the bilinear stress-strain curve are presented in Table A2 of Appendix A. The accuracy of the selected bilinear relation in this study (Equation (4) through Equation ( 8)) is compared to four other models 51,64,77,80 using these experimental results. The attained results are demonstrated in Figure 5.…”

Section: Modeling Of Confined Plain Concrete Behaviormentioning

confidence: 99%

Predictive model for slenderness limit of circular RC columns confined with FRP wraps

Arabshahi

Tavakkolizadeh

2021

Structural Concrete

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Application of fiber-reinforced polymer (FRP) for retrofitting and rehabilitation of concrete structures is a common method. The main role of FRP confinement for reinforced concrete (RC) columns is to increase the ultimate strength and strain of confined concrete core and therefore improve in the load carrying capacity of the columns. However, it is possible that a previously short column fails due to buckling after the application of FRP confinement. In other words, the enhanced compressive strength of a retrofitted column may go beyond its buckling load. Therefore, a design criterion to predict this condition is necessary for the designers in the preliminary and final stages of the design. In this paper, a predictive model is proposed to determine the slenderness limit of FRPconfined circular RC columns. The suggested relation was derived using one of the accurate design-oriented strength models for FRP-confined concrete columns as well as analytically derived buckling equations. The effect of hybrid FRP confinement is also incorporated in the suggested slenderness limit. Moreover, a parametric study was performed on the suggested model to specify most influential parameters. The accuracy of the proposed relation was evaluated using a database of experimental results collected from previous studies. The results of the evaluations demonstrated acceptable accuracy of the proposed relation in predicting behavior and failure mode of FRP-confined RC columns.

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Stress–strain model of confined concrete with Aramid FRP wraps

Cited by 28 publications

References 54 publications

RETRACTED: Investigation of composite materials supported by carbon fiber fabric (TFC) in pre-cracked concrete beams

RETRACTED: Investigation of composite materials supported by carbon fiber fabric (TFC) in pre-cracked concrete beams

Proposition of new applicable strength models for concrete columns confined with fiber reinforced polymers

Predictive model for slenderness limit of circular RC columns confined with FRP wraps

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