Experimental Study on Bond Performance of Near-Surface-Mounted CFRP Strips-Concrete Interface

Peng, Hui; Wang, Hao; Chen, Junmin; Zhang, Kebo

doi:10.1109/icdma.2013.138

Cited by 3 publications

(6 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on the final selected articles, the utilization of NSM-CFRP proves to be an extremely efficient method for enhancing the shear strength of structural components. The analysis revealed that there is still limited research on deep structural elements, with most studies focusing on experimental and numerical investigations conducted on simply supported beams and T cross beams [17] . However, there were a few exceptions, such as the study of 32 which examined masonry walls and the case study of 34 which focused on slabs.…”

Section: Discussionmentioning

confidence: 99%

“…This finding is consistent with the research conducted by 31, which demonstrates the effectiveness of the NSM technique in enhancing the shear strength of RC beams. Various configurations of NSM-CFRP have been employed to enhance the load capacity after shear crack and the maximum load [17,18]. However, the shear contributions of NSM-CFRP are constrained by the compressive strength of concrete in the forty-nine T-beams studied.…”

Section: Experimental Studiesmentioning

confidence: 99%

See 1 more Smart Citation

Review on NSM-CFRP Method for Enhancing Shear Capacity in Reinforced Concrete Deep Beams

Faney,

Hema Priya

2024

E3S Web of Conf.

View full text Add to dashboard Cite

The demand for improved strengthening techniques for current concrete structures is on the rise. Many structures that will still be in use two decades from now have already been constructed. A portion of these structures must undergo enhancements or be replaced, as they are deteriorating not only from natural processes but also from mistakes made during their design and construction. Near-surface mounted (NSM) utilizing Fiber-Reinforced Polymer (FRP) bars has proven to be a successful method in enhancing the flexural and shear performance of both existing and new Reinforced Concrete (RC) elements. This technique is considered innovative and rapidly developing, attracting significant attention from researchers. Therefore, this study aims to analyze previous and current research on the shear strengthening of RC deep beams using NSM-CFRP bars. The research findings were gathered from four prominent databases: ASCE, EBSCO, SCOPUS, and Science Direct. A thorough literature review was conducted, focusing specifically on NSM-CFRP for shear strengthening. A total of 56 articles were categorized into three main groups. Group 1 consisted of studies examining the use of NSM for shear strengthening, while Group 2 focused on articles related to the structural behavior of RC members in shear. Group 3 included articles discussing the theoretical aspects of NSM-FRP in enhancing shear strength, aiming to develop a new method for calculating shear effects provided by NSM-FRP. In conclusion, this study highlights three fundamental aspects of this field: (1) the rationale behind utilizing NSM-FRP bars for shear reinforcement and their practical applications, (2) existing challenges and barriers to widespread adoption, and (3) recommendations for enhancing the acceptance and utilization of NSM-FRP bars.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Experimental Studiesmentioning

confidence: 99%

Review on NSM-CFRP Method for Enhancing Shear Capacity in Reinforced Concrete Deep Beams

Faney,

Hema Priya

2024

E3S Web of Conf.

View full text Add to dashboard Cite

show abstract

“…Based on the tensile test results, the CFRP tensile strength clearly decreases as the charge density increases, as shown in Figure 6 . However, the strength utilization percentage of CFRP in concrete structures is generally between 40% and 75%, based on previous reports [ 25 , 26 , 27 , 28 ]. Therefore, to successfully adopt CFRP in a dual-function system within concrete, the polarized CFRP must retain sufficient strength to satisfy requirements for structural strengthening.…”

Section: Discussion Of Service Lifementioning

confidence: 99%

Dual Function Behavior of Carbon Fiber-Reinforced Polymer in Simulated Pore Solution

et al. 2016

View full text Add to dashboard Cite

The mechanical and electrochemical performance of carbon fiber-reinforced polymer (CFRP) were investigated regarding a novel improvement in the load-carrying capacity and durability of reinforced concrete structures by adopting CFRP as both a structural strengthener and an anode of the impressed current cathodic protection (ICCP) system. The mechanical and anode performance of CFRP were investigated in an aqueous pore solution in which the electrolytes were available to the anode in a cured concrete structure. Accelerated polarization tests were designed with different test durations and various levels of applied currents in accordance with the international standard. The CFRP specimens were mechanically characterized after polarization. The measured feeding voltage and potential during the test period indicates CFRP have stable anode performance in a simulated pore solution. Two failure modes were observed through tensile testing. The tensile properties of the post-polarization CFRP specimens declined with an increased charge density. The CFRP demonstrated success as a structural strengthener and ICCP anode. We propose a mathematic model predicting the tensile strengths of CFRP with varied impressed charge densities.

show abstract

“…The interfacial bond-slip degradation relationship was obtained by substituting Equation (7) into Equation ( 2), yielding Equation ( 8 S 0 [1−(bn 2 +cn)] S, S ≤ S 0 1 − bn 2 + cn τ = 0, S > S 0 1 − bn 2 + cn (8) where τ max,0 and S 0 are the maximum interfacial shear stress and corresponding slip value without F-T/W-D cycles, respectively. Figure 10 shows the comparisons of the predicted and experimental bond-slip degradation relationship.…”

Section: Bond-slip Degradation Relationshipmentioning

confidence: 99%

“…When it is attached onto the cracked part of the steel bridge, it can effectively improve the mechanical performance and does not excessively increase the dead weight of the bridge. Accordingly, the externally bonded CFRP-reinforcement technology has been used to rehabilitate steel bridges in recent years and has achieved good results [4][5][6][7]. The durability of rehabilitated structures by bonding CFRP plates depends on the bond performance of the reinforcement interface rather than the strength of the CFRP material itself.…”

Section: Introductionmentioning

confidence: 99%

Durability of CFRP–Steel Double–Lap Joints under Cyclic Freeze–Thaw/Wet–Dry Conditions

Ren

Jiang

et al. 2022

Polymers

View full text Add to dashboard Cite

The usage of carbon fiber–reinforced polymer (CFRP) to strengthen cracked steel structures can effectively improve its bear capacity, so it has been extensively used in recent years. The degradation of interfacial bonding is one of the most important factors affecting the durability of CFRP–steel structures under a freeze–thaw(F–T)/wet–dry (W–D) environment. In this study, epoxy resin adhesive (ERA) dog-bone specimens and CFRP–steel double-lap joints (bonded joints) were prepared. F–T/W–D cycles experiment and tensile tests of the ERA specimens and the bonded joints were also performed. Under F–T/W–D cycles, the main properties of the ERA specimens and the bonded joints were examined. Results indicated that fracture failure occurred in all ERA specimens. The hybrid failure modes of fiber peeling on the surface of CFRP plate and the bonded interface peeling between the CFRP plate and ERA layer primarily occurred in the bonded joints. The failure of both of them can be considered to be brittle, which was unaffected by the F–T/W–D cycles. With increased F–T/W–D cycles, the ultimate load and tensile strength of the ERA specimens initially increased and then decreased, whereas the elastic modulus initially increased and then remained unchanged. The ultimate load of the bonded joints decreased gradually. Based on the relationship between the interfacial bond-slip parameters and the number of F–T/W–D cycles, the bond–slip model of the bonded joints was established. The proposed relationship was validated by comparing with the experimental bond-slip relationships and the predicted relationships under the F–T/W–D cycles.

show abstract

Experimental Study on Bond Performance of Near-Surface-Mounted CFRP Strips-Concrete Interface

Cited by 3 publications

References 6 publications

Review on NSM-CFRP Method for Enhancing Shear Capacity in Reinforced Concrete Deep Beams

Review on NSM-CFRP Method for Enhancing Shear Capacity in Reinforced Concrete Deep Beams

Dual Function Behavior of Carbon Fiber-Reinforced Polymer in Simulated Pore Solution

Durability of CFRP–Steel Double–Lap Joints under Cyclic Freeze–Thaw/Wet–Dry Conditions

Contact Info

Product

Resources

About