Bond Performance of Corroded Steel Reinforcement and Recycled Coarse Aggregate Concrete after Freeze–Thaw Cycles
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Published:2023-04-02
Issue:7
Volume:15
Page:6122
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ISSN:2071-1050
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Container-title:Sustainability
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language:en
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Short-container-title:Sustainability
Author:
Huang Xutong1, Su Tian2345ORCID, Wang Jinxu1, Cao Fubo1, Wang Chenxia1
Affiliation:
1. School of Civil Engineering, Inner Mongolia University of Science & Technology, Baotou 014017, China 2. School of Civil and Architectural Engineering, Shandong University of Technology, Zibo 255000, China 3. School of Civil Engineering, Wuhan University, 8 Donghu South Road, Wuhan 430072, China 4. China Railway 11 Bureau Group Co., Ltd., 277 Zhongshan Road, Wuhan 430061, China 5. International College, Krirk University, No. 3 Soi Ramintra 1, Ramintra Road, Anusaowaree, Bangkhen, Bangkok 10220, Thailand
Abstract
Freeze–thaw cycles and steel reinforcement corrosion can damage the properties of concrete structures in a frigid marine environment. In this paper, experimental and analytical research on the freeze–thaw resistance of recycled coarse aggregate concrete (RAC) and the bond performance of corroded steel reinforcement and RAC after freeze–thaw cycles was conducted. The results showed that the ultimate bond strength decreases with increasing freeze–thaw cycles and steel reinforcement corrosion rates, and the bond strength decreases more rapidly under the coupled effect of freeze–thaw cycles and steel reinforcement corrosion. Additionally, the quantitative analysis of the relationships between the ultimate bond strength and different freeze–thaw cycles and steel reinforcement corrosion rates was conducted through the relativity analysis, and analysis results revealed that freeze–thaw cycles have a more pronounced effect on the ultimate bond strength than steel reinforcement corrosion. A modified bond–slip prediction model of corroded steel reinforcement and RAC after freeze–thaw cycles was established, and the model exhibited better agreement with the test data of this and other research, demonstrating its rationality and applicability. These research results can provide experimental and analytical support for freeze–thaw-resistant design and bond performance prediction of RAC structures in a frigid marine environment.
Funder
National Natural Science Foundation of China Program of Inner Mongolia Natural Science Foundation Foundation of China Postdoctoral Science Foundation
Subject
Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment,Geography, Planning and Development,Building and Construction
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