Seismic Performance of Corroded ECC-GFRP Spiral-Confined Reinforced-Concrete Column

Author:

Long Xu1,Chen Zehong1,Li Pengda1ORCID

Affiliation:

1. Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen University, Shenzhen 518060, China

Abstract

Preventing corrosion in the steel reinforcement of concrete structures is crucial for maintaining structural integrity and load-bearing capacity as it directly impacts the safety and lifespan of concrete structures. By preventing rebar corrosion, the durability and seismic performance of the structures can be significantly enhanced. This study investigates the hysteresis behavior of both corroded and non-corroded engineered cementitious composite (ECC)-glass-fiber-reinforced polymer (GFRP) spiral-confined reinforced-concrete (RC) columns. Employing experimental methods and finite element analysis, this research explores key seismic parameters such as crack patterns, failure modes, hysteretic responses, load-bearing capacities, ductility, stiffness degradation, and energy dissipation. The results demonstrate that ECC-GFRP spiral-confined RC columns, compared to traditional RC columns, show reduced corrosion rates, smaller crack widths, and fewer corrosion products, indicating superior crack control and corrosion resistance. Hysteresis tests revealed that ECC-GFRP columns, at a 20% target corrosion rate, exhibit an enhanced load-bearing capacity, ductility, and energy dissipation, suggesting improved durability and seismic resilience. Parametric and sensitivity analyses confirm the finite element model’s accuracy and highlight the significant influence of concrete compressive strength on load-bearing capacity. The findings suggest that ECC-GFRP spiral-confined RC columns offer promising applications in coastal and seismic-prone regions, enhancing corrosion resistance and mechanical properties, thus potentially reducing formwork costs and improving construction quality and efficiency.

Funder

National Natural Science Foundation of China

Shenzhen Science and Technology Program

Shenzhen Key Laboratory for Low-carbon Construction Material and Technology

Publisher

MDPI AG

Reference50 articles.

1. Challenges and opportunities in corrosion of steel in concrete;Angst;Mater. Struct.,2018

2. New Model for Estimating the Time-Variant Seismic Performance of Corroding RC Bridge Columns;Guo;J. Struct. Eng.,2015

3. Research Progress on Life-cycle Based Bridge Structural Seismic Performance Evaluation and Design Method;Li;China J. Highw. Transp.,2014

4. Zhang, L., Niu, D., Wen, B., and Luo, D. (2019). Concrete Protective Layer Cracking Caused by Non-Uniform Corrosion of Reinforcements. Materials, 12.

5. Anti-corrosion performance of a novel ECC-GFRP spiral-confined RC column;Chen;Case Stud. Constr. Mater.,2024

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3