Bond Behavior between Waste Fiber-Recycled Concrete and Reinforcement under Freeze-Thaw Cycles

被引：0

作者：

Liu Y. ^{[1
]}

Zhou J. ^{[1
]}

Wu D. ^{[1
]}

Kang T. ^{[1
]}

Yu H. ^{[1
]}

机构：

[1] School of Civil Engineering, Shenyang Jianzhu University, Shenyang

来源：

Jianzhu Cailiao Xuebao/Journal of Building Materials | 2023年 / 26卷 / 09期

关键词：

bond behavior; freeze-thaw cycle; recycled concrete; waste fiber;

D O I：

10.3969/j.issn.1007-9629.2023.09.011

中图分类号：

学科分类号：

摘要：

Firstly, the effects of freeze-thaw cycles, replacement rate of recycled aggregates, and volume fraction of waste fibers on bond behavior between recycled concrete and reinforcement were studied under freeze-thaw cycle test. Secondly, the bond damage mechanism was analyzed from the perspective of energy conservation and dissipation. Finally, the bond-slip model was established based on the damage and strength degradation theory. The results show that the bond performance between waste fiber-recycled concrete and reinforcement becomes poor with increasing freeze-thaw cycles and replacement rate of recycled aggregates. The proper amount of recycled fiber is beneficial to the bond behavior between recycled concrete and reinforcement after freeze-thaw cycles, and the bond strength is improved by 11.35% when the volume fraction of recycled fibers is 0.12%. The proposed bond-slip model can better characterize the relationship between bond strength and relative compressive strength. © 2023 Tongji University. All rights reserved.

引用

页码：1031 / 1038

页数：7

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