Effects of Marine Environment on Water Diffusion and Interlaminar Shear Strength of Carbon-Glass Hybrid-Fiber Reinforced Polymer Bars

PAN Yunfeng; SHI Jiajun; YU Yixun; XIAN Guijun

doi:10.13204/j.gyjzG21062705

Volume 53 Issue 4

Apr. 2023

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PAN Yunfeng, SHI Jiajun, YU Yixun, XIAN Guijun. Effects of Marine Environment on Water Diffusion and Interlaminar Shear Strength of Carbon-Glass Hybrid-Fiber Reinforced Polymer Bars[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(4): 161-172. doi: 10.13204/j.gyjzG21062705

Citation:

PAN Yunfeng, SHI Jiajun, YU Yixun, XIAN Guijun. Effects of Marine Environment on Water Diffusion and Interlaminar Shear Strength of Carbon-Glass Hybrid-Fiber Reinforced Polymer Bars[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(4): 161-172. doi: 10.13204/j.gyjzG21062705

Citation:

PAN Yunfeng, SHI Jiajun, YU Yixun, XIAN Guijun. Effects of Marine Environment on Water Diffusion and Interlaminar Shear Strength of Carbon-Glass Hybrid-Fiber Reinforced Polymer Bars[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(4): 161-172. doi: 10.13204/j.gyjzG21062705

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Effects of Marine Environment on Water Diffusion and Interlaminar Shear Strength of Carbon-Glass Hybrid-Fiber Reinforced Polymer Bars

doi: 10.13204/j.gyjzG21062705

1. School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou 310018, China;
2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

Received Date: 2021-06-27
Available Online: 2023-07-01

Abstract

Abstract

To promote the durability of glass fiber reinforced ploymer (GFRP) bars, a thin layer of carbon fiber reinforced polymer was wrapped around the internal GFRP bars. The effects of distilled water, strong alkali solution, alkalescent solution, and saline-alkaline solution on the water diffusion and interlaminar shear strength of GFRP and HFRP bars were investigated. It compared with the cement mortar-covered FRP bars in distilled water and seawater. The results showed that in the case of the strong alkaline solution with pH 13.4 and saline-alkaline solution, the saturation water absorption of HFRP was less than that of GFRP. The retention interlaminar shear strength of HFRP bar was larger than GFRP bar, and the carbon fiber coat delayed the degradation of the internal GFRP. In the case of distilled water and alkalescent solution with pH 12.7, the saturation water absorption of HFRP was larger than that of GFRP. The degradation of interlaminar shear strength for HFRP bars was more severe than GFRP bar at 60 ℃. Trends of the variation of interlaminar shear stregnth and the failure modes of the cement mortar-covered FRP bars in distilled water and seawater were similar to the bare FRP bars in distilled water and alkaline solution with pH 12.7. The long-term interlaminar shear strength of GFRP and HFRP bars at 4 ℃, 17 ℃ and 21 ℃ were predicted according to the Arrhenius theory.
- carbon-glass hybrid-fiber reinforced polymer,
- alkaline solution,
- saline-alkaline solution,
- mechanical performance,
- durability

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References(26)

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