Dynamic Bond Stress-Slip Relationship between Basalt FRP Sheet and                    Concrete under Initial Static Loading

Shen, Dejian; Ji, Yong; Yin, Fanglong; Zhang, Jinyang

doi:10.1061/(asce)cc.1943-5614.0000568

Cited by 44 publications

(14 citation statements)

References 29 publications

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“…BFRP sheet shows good performance on bond behavior. [18][19][20] Until recently, the bond stress-slip relationship between BFRP bars and concrete has not been studied in depth. 21 Hence, more work is required before general conclusions could be drawn about the bond performance of BFRP bars and concrete.…”

Section: Introductionmentioning

confidence: 99%

Bond stress–slip relationship between basalt fiber-reinforced polymer bars and concrete using a pull-out test

Shen

Ojha

Xiang

et al. 2016

Journal of Reinforced Plastics and Composites

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The basalt fiber-reinforced polymer bar is one of the newly evolved materials expected to be used as a structural reinforcement because of its non-corrosive nature and abundant tensile strength properties. The bond stress-slip relationship between fiber-reinforced polymer bars and concrete is necessary to evaluate the load carrying capacity of concrete components or structures reinforced with fiber-reinforced polymer bars. Although the relationship between fiber-reinforced polymer bars and concrete has been studied, the bond stress-slip relationship between concrete and basalt fiber-reinforced polymer bars considering the effect of bar diameter and concrete strength is still lacking. This paper presents an experimental investigation on the bond behavior between basalt fiber-reinforced polymer bars with different diameters (10, 14, and 20 mm) and concrete with two different compressive strengths using a pull-out test. The test results showed that (1) the failure mode between basalt fiber-reinforced polymer bars and concrete was equally contributed from crushing of concrete and failure of basalt fiber-reinforced polymer surface and mainly from delaminated resin-rich surface for the specimens with the concrete compressive strength of 43.6 and 71.8 MPa, respectively; (2) the bond strength between basalt fiber-reinforced polymer bars and concrete decreased with the increase of bar diameter;(3) the slip corresponding to bond strength increased with the increase of diameter of basalt fiber-reinforced polymer bars; (4) the bond strength between the basalt fiber-reinforced polymer bars with diameter of 10 mm and concrete increased by 18.8% when the concrete strength increased by 64.7%; and (5) the formulas for bond stress-slip relationship between basalt fiber-reinforced polymer bars and concrete in consideration of the ratio of concrete cover depth and concrete compressive strength were proposed. The calculation results of the formulas indicated good accuracy with the experimental results.

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Section: Introductionmentioning

confidence: 99%

Bond stress–slip relationship between basalt fiber-reinforced polymer bars and concrete using a pull-out test

Shen

Ojha

Xiang

et al. 2016

Journal of Reinforced Plastics and Composites

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“…The experimental natural frequencies of B0 before loading, B1 before repair, B1 after repair, and B1 after loading were 23.44, 24.43, 26.38, and 17.59 Hz, respectively. The theoretical natural frequency of specimens B0 and B1 without cracks was calculated as 40.0 and 38.9 Hz, respectively, using equation (29) according to Maalej et al 6 …”

Section: Stiffness Of the Specimenmentioning

confidence: 99%

“…22,23 BFRP shows good performance on bond behavior. [29][30][31] It also exhibits better performance in acidic environments than GFRP. 32 Most of the recent studies are on beams strengthened with GFRP or CFRP, while studies on beams strengthened with BFRP are lacking.…”

Section: Introductionmentioning

confidence: 99%

Behavior of reinforced concrete box beam with initial cracks repaired with basalt fiber-reinforced polymer sheet

Shen

Deng

Zhang

et al. 2015

Journal of Reinforced Plastics and Composites

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Cracking is a common form of damage in reinforced concrete beams. Cracks affect the stiffness and load-carrying capacity of beams. Fiber-reinforced polymers, as an affordable and efficient composite material, are being used more extensively to repair and strengthen conventional reinforced concrete beams. Although numerous studies have been conducted to investigate the behavior of undamaged and corroded beams repaired with carbon fiber-reinforced polymers or glass fiber-reinforced polymers, research on the behavior of beams with initial flexural cracks using basalt fiber-reinforced polymers as a restoration material is still lacking. Two 60-year-old cracked beams without repair and with repair using basalt fiber-reinforced polymers were experimentally and analytically investigated. The effect of repair on the load-carrying capacity, cracking characteristics, frequency, and stiffness of the beams was analyzed. The theoretical load-carrying capacity, midspan moment-deflection relationship, and strain distribution along the basalt fiber-reinforced polymers sheet were calculated and compared with the experimental results. The theoretical and experimental results show that (1) the load-carrying capacity of the repaired beam increased at the rate of 27.2% compared with that of the beam without repair; (2) the load-carrying capacities calculated from the Chinese and American standards of specimen B1 were 3.5% and 19.4% higher than those of the test results, respectively; (3) the basalt fiber-reinforced polymers repair system had an evident confinement effect on concrete crack development; (4) the natural frequency and stiffness of the repaired beam increased at the rate of 8.0% and 16.6% compared with the beam without repair, respectively; (5) the calculated midspan moment-deflection relationship of the repaired beam with initial cracks based on Zhang's method showed good accuracy with the test results; and (6) the strain distribution on the fiberreinforced polymers sheet could be predicted by calculating the transition point strain and the length of the total bond development zone.

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“…Therefore, the effective bond length is an important parameter to evaluate the FRP bond strength of concrete and calculate the failure load of bonded specimens. Researchers have established many analytical models to calculate effective bond lengths 45–51 . Miller et al 52–54 found that the chloride penetration did not impact the effective bond length.…”

Section: Introductionmentioning

confidence: 99%

Effect of chloride penetration on CFRP sheet, CFRP‐concrete interface, and CFRP‐strengthened concrete beams

Wang

Han

Wang

et al. 2023

Structural Concrete

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Whether the performance of carbon fiber‐reinforced polymer (CFRP)‐strengthened concrete structure is affected by chloride penetration is the key to the application under chloride environments. In this paper, the effect of chloride penetration on tensile properties of CFRP sheet, bond behavior of CFRP‐concrete, and flexural performance of CFRP‐strengthened concrete beams were studied. Results show that chloride penetration has no effect on the elastic modulus of the CFRP sheet. The tensile strength and elongation of the CFRP sheet decrease with the exposure time increase, reducing by 10% and 12.7% after 240 days. The interface failure of CFRP‐concrete is likely to occur on the concrete surface. As the exposure time increases, the interface failure develops toward the epoxy resin layer; the sliding stiffness and end slip of the interface decrease. However, the ultimate bearing capacity of the interface first increases and then decreases. As the exposure time increase, the effective bonding length gradually increases, and the failure mode of CFRP‐strengthened beams changes from bending failure to shear failure. After 120 days, the ultimate bearing capacity of the beams is significantly reduced. From three parts of materials, interfaces, and components to provide an evaluation basis for the use, regular detection, and life prediction of CFRP‐strengthened reinforced concrete beams under chloride environments.

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Dynamic Bond Stress-Slip Relationship between Basalt FRP Sheet and Concrete under Initial Static Loading

Cited by 44 publications

References 29 publications

Bond stress–slip relationship between basalt fiber-reinforced polymer bars and concrete using a pull-out test

Bond stress–slip relationship between basalt fiber-reinforced polymer bars and concrete using a pull-out test

Behavior of reinforced concrete box beam with initial cracks repaired with basalt fiber-reinforced polymer sheet

Effect of chloride penetration on CFRP sheet, CFRP‐concrete interface, and CFRP‐strengthened concrete beams

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