Effects of Freeze-Thaw Cycles on the Behavior of the Bond between CFRP Plates and Concrete Substrates

Pan, Yunfeng; Xian, Guijun; Li, Hui

doi:10.1061/(asce)cc.1943-5614.0000846

Cited by 29 publications

(16 citation statements)

References 24 publications

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“…This phenomenon has been reported in the case of CFRP–concrete in water [20,32]. The present failure mode of the interfacial debonding is different from the concrete cohesive failure of CFRP–concrete exposed to thermal cycles (−20 to 30 °C) in water [5]. Ref.…”

Section: Resultsmentioning

confidence: 49%

“…The failure modes of the control specimens occur in the concrete beneath the adhesive layer. A concrete block and many particles of fine aggregates were seen to be bonded to CFRP plates/sheets in the literature [5,31].…”

Section: Resultsmentioning

confidence: 99%

“…Ref. [5] shows a 22% reduction of concrete compressive strength. In the present case, 270 thermal cycles in water reduced the compressive strength by 3.6%.…”

Section: Resultsmentioning

confidence: 99%

“…A long-term cyclic temperature in the field results in the variation of temperature. It has been reported that the interfacial bond between CFRP and concrete is susceptible to low temperature, high temperature, thermal cycles, relative humidity, and freeze–thaw cycles [5,6]. Few studies have been conducted to investigate the effects of thermal cycles, relative humidity, and their combination on bond performance.…”

Section: Introductionmentioning

confidence: 99%

“…The moisture level plays a very important role in the effect of thermal cycles on the deterioration of CFRP–concrete performance [5,11,12]. On the one hand, the combination of water moisture and thermal cycles deteriorates the constituent materials.…”

Section: Introductionmentioning

confidence: 99%

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Durability of the Bond between CFRP and Concrete Exposed to Thermal Cycles

Liu

Pan

et al. 2019

Materials

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The bond between carbon fiber reinforced polymer (CFRP) and concrete is significantly and adversely affected by thermal cycles in air and water. In the present study, the effects of thermal cycles in air or water on the bond performance between CFRP and concrete were examined. A single-lap shear test was adopted to evaluate the performance of the CFRP–concrete bond. A number of 270 thermal cycles in air increased the interfacial fracture energy of the CFRP plate– and CFRP sheet–concrete by 35% and 20%, respectively while 270 thermal cycles in water reduced the interfacial fracture energy of the CFRP plate– and CFRP sheet–concrete by 9% and 46%, respectively. Thermal cycles in water caused the failure mode to change from concrete cohesive failure to primer–concrete interfacial debonding. The failure modes of CFRP–concrete exposed to thermal cycles in air still occurred in concrete. A reduction factor for the CFRP–concrete structure for thermal cycles in water was proposed.

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Section: Resultsmentioning

confidence: 49%

Section: Resultsmentioning

confidence: 99%

“…Ref. [5] shows a 22% reduction of concrete compressive strength. In the present case, 270 thermal cycles in water reduced the compressive strength by 3.6%.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%