The efficiency of using CFRP as a strengthening technique for reinforced concrete beams subjected to blast loading

Jahami, Ali; Temsah, Yehya; Khatib, Jamal

doi:10.1007/s40091-019-00242-w

Cited by 46 publications

(27 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the behavior of beams was modeled using ABAQUS 6.14 by SIMULIA to validate the experimental results and predict its behavior under different conditions. Future study might include the structural behavior of reinforced concrete beams and slabs including CRT glass waste under different dynamic load conditions such as blast and impact loads [37][38][39][40] to expand the knowledge on material behavior under different loading conditions.…”

Section: Introductionmentioning

confidence: 99%

Structural Performance of Reinforced Concrete Beams Incorporating Cathode-Ray Tube (CRT) Glass Waste

et al. 2021

Self Cite

View full text Add to dashboard Cite

The performance of reinforced concrete beams in the presence of cathode-ray tube (CRT) glass waste is examined. Four concrete mixes containing 0%, 10%, 20%, and 30% CRT glass waste as partial replacement of sand were prepared. The compressive and flexural strength as well as the modulus of elasticity of concrete were determined. Reinforced concrete beams with varying amounts of CRT glass were prepared and the three-point bending test was conducted. The load-deflection curve as well as the strain distribution along the depth of the beams were determined. Concrete containing CRT glass showed an increase in compressive strength, flexural strength, and modulus of elasticity especially at 10% replacement level. The load carrying capacity of reinforced concrete beam is higher when 10% of sand is replaced with CRT glass compared to the control beam and the beams with 20% and 30% CRT glass substitution. The failure mode of the reinforced concrete beams is flexural failure, and the failure pattern is similar for all beams. Strain distribution showed a better ductility at control beam where the deflection was higher than the other beams at the same load. Numerical analysis was conducted, and comparison was made with the experimental results. The comparison showed the accuracy of the software used, where the results of maximum load capacity and maximum deflection were very similar, and the difference did not exceed 5%. In addition, the tensile damage generated by the numerical analysis was very similar to that obtained by the experimental study.

show abstract

Section: Introductionmentioning

confidence: 99%

Structural Performance of Reinforced Concrete Beams Incorporating Cathode-Ray Tube (CRT) Glass Waste

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…The behavior law used is the concrete damaged plasticity (CDP) model that is a criterion reproducing a behaviour very close to the one of the concrete. [31], [32]. In order to model the steel reinforcement behavior, a firm wire rope element integrated into the concrete was used.…”

Section: Materials Propertiesmentioning

confidence: 99%

Modeling of CFRP strengthened RC beams using the SNSM technique, proposed as an alternative to NSM and EBR techniques

Boulebd

Ferhoune

Mohcene

et al. 2020

Frattura Ed Integrità Strutturale

View full text Add to dashboard Cite

In this paper, an analytical and numerical study in FEM finite element by the ABAQUS software was conducted. Which aims to study the behaviour of RC beams bending strengthened with SNSM side near surface mounted technique, proposed as a solution to avoid the failure mode by debonding of the strengthening, the disadvantage of the EBR externally bonded reinforced technique, and the failure mode by separation of the concrete cover relative to the NSM near surface mounted technique, by comparing the behaviour of the three techniques, the effect of the quantity of strengthening and confirm the results with the literature. The results of this study show that the numerical and analytical model can predict the behaviour of strengthened RC beams according to the three techniques, a clear improvement of the bending capacity of beams strengthened is noticed. A good preservation of the ductility of SNSM beams with a better failure mode.

show abstract

“…Fiber reinforced polymer (FRP) as externally bonded reinforcement (EBR) has become a mainstream technology over the last decades to retrofit concrete structures and is also applicable to the case of blast loading [1][2][3][4]. Its effectiveness for strengthening against blast loads is of importance to the building sector, as well as to society from a security and safety perspective.…”

Section: Introductionmentioning

confidence: 99%

“…Several studies are reported about the use of carbon fiber reinforced polymer (CFRP) as EBR for strengthening reinforced concrete structures against blast loading, and application examples are mentioned in [4][5][6][7][8] and the lack of understanding on CFRP debonding under blast impulse follows e.g from [9][10][11][12]. J.Ha et al [9] tested nine RC specimens with dimensions of 1 m × 1 m × 0.15 m retrofitted with either CFRP, polyurea (PU) or hybrid CFRP/PU under blast loading.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of the bond interaction between CFRP and concrete under blast loading

Maazoun

Matthys

Belkassem

et al. 2021

Composite Structures

View full text Add to dashboard Cite

Specific to blast loading, bond shear tests between carbon fiber reinforced polymer (CFRP) strips and concrete have not yet been reported in literature, to the best knowledge of the authors. Given the high potential of strengthening concrete with CFRP to increase blast resistance, it is necessary to better understand the dynamic interaction between concrete and CFRP under blast impulse. This article presents a new experimental setup developed in order to study blast driven bond interaction between CFRP and concrete. An evaluation of the bond at the interface between the CFRP strip and the concrete is conducted in order to identify the parameters that affect the bond strength under blast loading. Several retrofitted specimens with different bond strength are tested. An explosive driven shock tube (EDST) set-up is used to generate the blast loading. Piezo resistive strain gauges and digital image correlation (DIC) measurement are used to record the debonding process and the evolution of the strain along the bonded area. As such, the bond behaviour is studied for three different bond lengths and the effect of interaction of the blast wave within the concrete is highlighted. The experimental tests demonstrate that under blast loading, the debonding between the CFRP strip and the concrete occurs due to a combined effect: interface stresses caused by the induced force in the CFRP and additional stresses resulting from the propagation of the blast induced stress wave within the concrete.

show abstract

The efficiency of using CFRP as a strengthening technique for reinforced concrete beams subjected to blast loading

Cited by 46 publications

References 11 publications

Structural Performance of Reinforced Concrete Beams Incorporating Cathode-Ray Tube (CRT) Glass Waste

Structural Performance of Reinforced Concrete Beams Incorporating Cathode-Ray Tube (CRT) Glass Waste

Modeling of CFRP strengthened RC beams using the SNSM technique, proposed as an alternative to NSM and EBR techniques

Experimental study of the bond interaction between CFRP and concrete under blast loading

Contact Info

Product

Resources

About