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Open AccessArticle

Effect of Temperature Variation and Pre-Sustained Loading on the Bond between Basalt FRP Sheets and Concrete

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School of Civil Engineering, Chang’an University, Xi’an 710061, China
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School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China
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School of Civil Engineering and Architecture, Guangxi University for Nationalities, Guangxi Zhuang Autonomous Region 530000, China
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Guangdong Province Key Laboratory of Durability for Marine Civil Engineering, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
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School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou, 310018, China
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School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China
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Author to whom correspondence should be addressed.
Materials 2020, 13(7), 1530; https://doi.org/10.3390/ma13071530 (registering DOI)
Received: 25 February 2020 / Revised: 16 March 2020 / Accepted: 23 March 2020 / Published: 26 March 2020
(This article belongs to the Section Construction and Building Materials)
The coupled effects of temperature variation and pre-sustained loading on the bond between basalt fiber reinforced polymer (BFRP) sheets and a concrete substrate were studied. Single lap-shear test specimens were exposed to temperatures of 15, 30, 40, 50, and 60 °C for 3 h with pre-sustained loading at 35% of the ultimate load capacity (Fu). Compared with the case of 15 °C, the interfacial fracture energy of the specimens at 30 and 40 °C increased by 46% and 11%, respectively, whereas those reduced by 73% and 77% at 50 and 60 °C, respectively. The coupled effects of temperature and pre-sustained loading on the effective bond length are insignificant for the specimens at both 15 and 30 °C and the effective bond length increased to 300 mm when the temperature exceeded 40 °C. The failure crack still occurred in the concrete substrate at the temperatures of 15 and 30 °C, and changed to the debonding of the adhesive layer from the concrete substrate at the temperature above 30 °C. View Full-Text
Keywords: basalt fiber-reinforced polymer (BFRP) sheet; concrete; interface; pre-sustained loading; temperature variation basalt fiber-reinforced polymer (BFRP) sheet; concrete; interface; pre-sustained loading; temperature variation
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MDPI and ACS Style

He, J.; Lu, Z.; Tan, S.; Ueda, T.; Pan, Y.; Xie, J.; Xian, G. Effect of Temperature Variation and Pre-Sustained Loading on the Bond between Basalt FRP Sheets and Concrete. Materials 2020, 13, 1530.

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