Tianqi Chen , Xiaokun Cai , Yubing Zhong , Xiaotan Zuo , Weiyong Yang , Chao Liu , Xuequn Cheng , Xiaogang Li
{"title":"通过室外暴露和现场在线监测评估中国高原环境下低合金钢筋的耐久性","authors":"Tianqi Chen , Xiaokun Cai , Yubing Zhong , Xiaotan Zuo , Weiyong Yang , Chao Liu , Xuequn Cheng , Xiaogang Li","doi":"10.1016/j.conbuildmat.2025.140475","DOIUrl":null,"url":null,"abstract":"<div><div>This study quantitatively evaluates the durability of low-alloy steel bars in the Chinese plateau region through outdoor exposure experiments and on-site monitoring, revealing the dynamic evolution of microalloying elements' effects on corrosion resistance. The addition of Cr and RE promotes localized corrosion to develop laterally, reduces corrosion rates, and significantly enhances overall corrosion resistance, which can be attributed to the improved stability of the rust layer. Both the cumulative electric quantity and F-index indicate that the synergistic effect of Cr and RE surpasses that of Cr alone. A q-value is introduced to assess environmental sensitivity, highlighting Cr's variable behavior across different outdoor conditions. Notably, Cr enhances corrosion resistance primarily in the later stages, while RE quickly stabilizes the rust layer, thereby extending the service life of HRB400 in the plateau region.</div></div>","PeriodicalId":288,"journal":{"name":"Construction and Building Materials","volume":"468 ","pages":"Article 140475"},"PeriodicalIF":8.0000,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Assessing the durability of low-alloy rebars in China plateau environment by outdoor exposure and on-site online monitoring\",\"authors\":\"Tianqi Chen , Xiaokun Cai , Yubing Zhong , Xiaotan Zuo , Weiyong Yang , Chao Liu , Xuequn Cheng , Xiaogang Li\",\"doi\":\"10.1016/j.conbuildmat.2025.140475\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study quantitatively evaluates the durability of low-alloy steel bars in the Chinese plateau region through outdoor exposure experiments and on-site monitoring, revealing the dynamic evolution of microalloying elements' effects on corrosion resistance. The addition of Cr and RE promotes localized corrosion to develop laterally, reduces corrosion rates, and significantly enhances overall corrosion resistance, which can be attributed to the improved stability of the rust layer. Both the cumulative electric quantity and F-index indicate that the synergistic effect of Cr and RE surpasses that of Cr alone. A q-value is introduced to assess environmental sensitivity, highlighting Cr's variable behavior across different outdoor conditions. Notably, Cr enhances corrosion resistance primarily in the later stages, while RE quickly stabilizes the rust layer, thereby extending the service life of HRB400 in the plateau region.</div></div>\",\"PeriodicalId\":288,\"journal\":{\"name\":\"Construction and Building Materials\",\"volume\":\"468 \",\"pages\":\"Article 140475\"},\"PeriodicalIF\":8.0000,\"publicationDate\":\"2025-03-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Construction and Building Materials\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0950061825006233\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2025/2/18 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q1\",\"JCRName\":\"CONSTRUCTION & BUILDING TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Construction and Building Materials","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0950061825006233","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/2/18 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"CONSTRUCTION & BUILDING TECHNOLOGY","Score":null,"Total":0}
Assessing the durability of low-alloy rebars in China plateau environment by outdoor exposure and on-site online monitoring
This study quantitatively evaluates the durability of low-alloy steel bars in the Chinese plateau region through outdoor exposure experiments and on-site monitoring, revealing the dynamic evolution of microalloying elements' effects on corrosion resistance. The addition of Cr and RE promotes localized corrosion to develop laterally, reduces corrosion rates, and significantly enhances overall corrosion resistance, which can be attributed to the improved stability of the rust layer. Both the cumulative electric quantity and F-index indicate that the synergistic effect of Cr and RE surpasses that of Cr alone. A q-value is introduced to assess environmental sensitivity, highlighting Cr's variable behavior across different outdoor conditions. Notably, Cr enhances corrosion resistance primarily in the later stages, while RE quickly stabilizes the rust layer, thereby extending the service life of HRB400 in the plateau region.
期刊介绍：
Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged.
Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
