| 引用本文: | 王作虎,王博,陈振鹏,张雨彤,王春月.冻融和高温作用下CFRP布粘贴页岩砖黏结性能变化[J].哈尔滨工业大学学报,2025,57(2):164.DOI:10.11918/202401020 |
| WANG Zuohu,WANG Bo,CHEN Zhenpeng,ZHANG Yutong,WANG Chunyue.Variation of freeze-thaw and high temperature on bonding performance of CFRP sheet bonded shale brick[J].Journal of Harbin Institute of Technology,2025,57(2):164.DOI:10.11918/202401020 |
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| 摘要: |
| 为研究冻融和高温作用下碳纤维增强塑料布（carbon fiber reinforced plastic sheet,简称CFRP布）粘贴页岩砖黏结性能的变化规律,对冻融环境、高温（60 ℃）环境、冻融和高温环境循环作用下,页岩砖、CFRP布和环氧树脂胶的材料性能进行测试,并对CFRP布粘贴页岩砖单面剪切性能的变化规律进行试验研究。结果表明:页岩砖、CFRP布和环氧树脂在冻融和高温循环作用下的材料性能受到较大影响,经历3次大循环作用后,页岩砖的抗压强度降低了31.62%,CFRP布的抗拉强度和弹性模量分别下降了44.38%和42.28%,环氧树脂的抗拉强度和弹性模量分别下降了32.45%和35.36%；冻融和高温循环作用对CFRP布粘贴页岩砖的单面剪切性能影响最明显,其次是单独冻融循环作用的影响,单独高温的影响最小。给出不同侵蚀环境下CFRP布粘贴页岩砖的单面剪切承载力计算公式,可以准确地计算不同环境下CFRP布粘贴页岩砖的单面剪切承载力。 |
| 关键词: 高温 冻融循环 界面剥离承载力 页岩砖 碳纤维增强塑料布 |
| DOI：10.11918/202401020 |
| 分类号:TU375 |
| 文献标识码:A |
| 基金项目:国家重点研发计划(2016YFC0701104)；国家自然科学基金(5,8) |
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| Variation of freeze-thaw and high temperature on bonding performance of CFRP sheet bonded shale brick |
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WANG Zuohu,WANG Bo,CHEN Zhenpeng,ZHANG Yutong,WANG Chunyue
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(School of Civil and Transportation Engineering, Beijing University of Civil Engineering and Architecture, Beijing 102627, China)
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| Abstract: |
| In order to study the variation in bonding performance of carbon fiber reinforced plastic (CFRP) sheet bonded shale bricks under freeze-thaw and high-temperature conditions, the material properties of shale bricks, CFRP sheet, and epoxy resin adhesive were tested under individual freeze-thaw environments, high-temperature (60 ℃) environments, freeze-thaw and high-temperature cycling environments. The single shear experiment was also conducted to explore the effect of bonding performance of CFRP sheet bonded shale bricks under different conditions. The test results show that the material properties of shale bricks, CFRP sheet, and epoxy resin are significantly affected by the cycles of freeze-thaw and high-temperature conditions. After three major cycles, the compressive strength of shale bricks decreased by 31.62%, the tensile strength and elastic modulus of CFRP sheet decreased by 44.38% and 42.28%, respectively. The tensile strength and elastic modulus of epoxy resin decreased by 32.45% and 35.36%, respectively. The freeze-thaw and high-temperature cycling effects have the most significant effect on the single shear performance of CFRP sheet bonded shale bricks, followed by the effect of freeze-thaw, and the effect of high-temperature being the least. The proposed calculation formula can accurately calculate the single shear bearing capacity of CFRP sheet bonded shale bricks under different environments. |
| Key words: high-temperature freeze-thaw cycle interface peeling bearing capacity shale brick CFRP sheet |
