Mechanical Properties of Basalt and Glass Fiber Reinforced Polymer Tendons after Exposed to Elevated Temperatures

被引：0
|
作者：
Zhu D. [1 ,2 ]
Xu X. [1 ,2 ]
Guo S. [1 ,2 ]
Shen Y. [1 ,2 ]
机构：
[1] College of Civil Engineering, Hunan University, Changsha
[2] Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province, Hunan University, Changsha
来源：
Hunan Daxue Xuebao/Journal of Hunan University Natural Sciences | 2021年 / 48卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Elevated temperatures; Fiber reinforced polymer(FRP) tendon; Mechanical properties; Thermo-gravimetric analysis;
D O I：
10.16339/j.cnki.hdxbzkb.2021.07.018
中图分类号：
学科分类号：
摘要：
The tensile and shear properties of basalt fiber reinforced polymer(BFRP) and glass fiber reinforced polymer(GFRP) tendons after thermal aging were tested by the universal testing machine, and the effects of elevated temperatures on the mechanical properties and failure mode of BFRP and GFRP tendons were studied. Furthermore, the tensile strengths of BFRP and GFRP tendons after treatment under various elevated temperatures were statistically analyzed by Weibull model, and the thermal degradation mechanism of BFRP and GFRP tendon was quantitatively analyzed by a thermo-gravimetric analyzer. The results show that the color and morphologies of BFRP and GFRP tendons change obviously with the elevated temperatures. The tensile strength, ultimate strain, toughness and shear strength of BFRP and GFRP tendons slightly increase firstly and then decrease with the temperature, while the elastic modulus does not change significantly. Compared with the GFRP tendon, the BFRP tendon treated under the same temperatures exhibits lower tensile properties but better shear performances. The pyrolysis characteristics of BFRP and GFRP tendons properly explain the degradation mechanism of their mechanical properties after elevated temperatures. © 2021, Editorial Department of Journal of Hunan University. All right reserved.
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页码：151 / 159
页数：8
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