Experimental investigations on the bond behavior between concrete and FRP reinforcing bars

Rolland, Arnaud; Quiertant, Marc; Khadour, Aghiad; Chataigner, Sylvain; Benzarti, Karim; Argoul, Pierre

doi:10.1016/j.conbuildmat.2018.03.169

Cited by 87 publications

(41 citation statements)

References 15 publications

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“…Although the distribution of the bond stress along the bond length is not constant, the bond length in the test is short (most equivalent to five times the bar diameter), and it can be assumed that the bond stress is evenly distributed during the test. 12,15,22–24 Therefore, the average bond stress is defined aswhere P is the tensile load (kN); d is the diameter of the bar (mm); and l is the bond length (mm). Under each load, the slip at the loading end is calculated by the average reading of the displacement meters minus the elongation of the FRP bar in the length between the top surface of bond length and the position of the measuring instrument on the FRP bars.…”

Section: Test Results and Discussionmentioning

confidence: 99%

“…Therefore, it is reasonable to use the free end displacement to characterize the amount of slip. 8,12,15,22,24 Figure 6 depicts representative bond-slip relationships for each group specimens.…”

Section: Test Results and Discussionmentioning

confidence: 99%

“…14 and Rolland et al. 15 further pointed out that ribbed-sand coated FRP bars could effectively improve interfacial bond performance. Different external environments also had different effects on the bond performance between FRP bars and concrete.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of influence factors on interfacial bond between BFRP bars and seawater sea-sand concrete

Hua

Yin

Wang

2020

Journal of Reinforced Plastics and Composites

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In this paper, the influences of parameters such as the bond length, surface textures of reinforcement, reinforcement type and stirrups restraint were considered. Pull-out failure, splitting failure and splitting-pullout failure modes were observed during the test. The slip at the free end always lagged behind the slip at the loading end and the bond-slip curve of ribbed basalt fiber reinforced polymer (BFRP) bars included the micro-slip stage, slip stage, descent stage, and residual stage. Reducing the bond length and using ribbed-sand coated bars were beneficial to improve the bond performance. Increasing the bond length from 2.5 d to 5 d reduced the bond strength by 49.2%. The application of ribbed-sand coated bars instead of plain bars increased the bond strength by 1202.3%. The difference in bond strength between steel bars, BFRP bars and glass fiber reinforced polymer (GFRP) bars was small and the bond strengths of the three were much greater than that of carbon fiber reinforced polymer (CFRP) bars. This was mainly attributed to the different rib forms of the bars. The application of stirrups increased the bond strength by 11.5%, which indicated that the stirrup restraints can improve the bond behavior to a certain extent. Besides, the analysis of the bond-slip curve based on the energy perspective was consistent with test results.

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Section: Test Results and Discussionmentioning

confidence: 99%

Section: Test Results and Discussionmentioning

confidence: 99%

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Analysis of influence factors on interfacial bond between BFRP bars and seawater sea-sand concrete

Hua

Yin

Wang

2020

Journal of Reinforced Plastics and Composites

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“…13e, f). This difference could be due to the effect of sand particles on the interface adherence by a mechanical anchoring phenomenon [60].…”

Section: Wavelet Energy Ratio Index (Weri) Of Different Reinforcing Barsmentioning

confidence: 99%

Identification of bond behavior between FRP/steel bars and self-compacting concrete using piezoceramic transducers based on wavelet energy analysis

Zhou

Zheng

et al. 2020

Archiv.Civ.Mech.Eng

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The civil infrastructures constructed using self-compacting concrete (SCC) reinforced with fiber-reinforced polymer (FRP) bars are advocated for engineering applications due to corrosion resistance and environmental-friendly performance. The bond behavior between FRP reinforcement and SCC is a significant factor affecting the serviceability and failure mechanism of this composite structure. However, it is hard to identify the damage mechanism and failure mode of the interface bond using the traditional test methods. Therefore, an effective monitoring method of interface damage using piezoceramic transducers is proposed in this paper. A series of pull-out tests were performed, and the test variables involved concrete materials and reinforcing bar types. A lead zirconate titanate (PZT) patch transducer acting as an actuator was bonded on the outer surface of reinforcing bars, and a piezoceramic smart aggregate transducer acting as a sensor was embedded in the SCC. A wavelet energy ratio index (WERI) is proposed to identify the damage mechanism of interface between reinforcing bars and SCC. The experimental test results reveal that the damage mechanism and failure mode of the bond between different reinforcing bars and concrete materials can be identified effectively and the peak of bond stress can be captured accurately by using WERI values.

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“…Further, the researchers studied the joint work of concrete and various types of FRP [12], evaluated the effect of friction, adhesion and mechanical bonding on the strength of the bonds between FRP and concrete [13].…”

Section: Reviewmentioning

confidence: 99%

Development of technology for production of fire-resistant nanocomposite constructional rebar and structural elements based on it

2018

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Analysis of recent publications describing the situation with fiber-reinforced plastic rebar is contained in the paper. The available types of composite reinforcement have a number of advantages, but also have significant drawbacks. New technical developments and fresh ideas, born thanks to the integration of sciences, make it possible to begin the creation of a technology for the production of fundamentally new types of rebar based on an inorganic (mineral) binder. New rebar will be tough and resistant to fire and high temperatures.

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Experimental investigations on the bond behavior between concrete and FRP reinforcing bars

Cited by 87 publications

References 15 publications

Analysis of influence factors on interfacial bond between BFRP bars and seawater sea-sand concrete

Analysis of influence factors on interfacial bond between BFRP bars and seawater sea-sand concrete

Identification of bond behavior between FRP/steel bars and self-compacting concrete using piezoceramic transducers based on wavelet energy analysis

Development of technology for production of fire-resistant nanocomposite constructional rebar and structural elements based on it

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