Performance of Bonded Anchorage for CFRP Tendons Affected by Temperature or Moisture

被引：0

作者：

Xie G. ^{[1
]}

Sun Y. ^{[1
]}

Yan P. ^{[1
]}

Liu Y. ^{[1
]}

Weng Y. ^{[1
]}

机构：

[1] Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang

来源：

Cailiao Daobao/Materials Reports | 2020年 / 34卷 / 22期

基金：

中国国家自然科学基金;

关键词：

Anchoring performance; Bonded anchorage; Carbon fiber reinforced polymer (CFRP) tendon; Temperature or moisture conditions;

D O I：

10.11896/cldb.19100008

中图分类号：

学科分类号：

摘要：

In order to investigate the effect of temperature and moisture conditions on the anchoring performance of the bonded anchorage for CFRP (Carbon Fiber Reinforced Polymer) tendons, tensile tests were carried out on the anchoring system with different moisture-conditioning (i.e., dry state at 23℃, salt solution immersion at 23℃ and salt solution immersion at 50℃) and different immersion durations. Twelve pre-conditioned bonded anchorages were tested, and their water absorption, ultimate tensile capacity, average interfacial shear strength, system slip and the damage development at the tendon/bonding medium interface were analyzed. With that, a prediction model for the ultimate tensile capacity of the bonded anchorage was established, accounting for the influence of temperature and moisture conditions. The results show that the ultimate tensile capacity and the interfacial shear strength of the bonded anchorage decrease with respect to the temperature and immersion duration. The ductility and interfacial performance of anchoring system are reduced with respect to hygrothermal conditions. The temperature is especially significant for the damage development in the anchor zone. The water absorption of the anchoring system under different temperatures follows Fick's second law. And the proposed prediction model is in line with the experimental results substantially. © 2020, Materials Review Magazine. All right reserved.

引用

页码：22178 / 22184

页数：6