{"title":"Characteristics of the corrosion products of steel bars in modified magnesium oxysulfide cement containing chloride salts","authors":"Mingfang Ba, Siyi Fang, Zhirui Xu, Gaoke Yu, Danlei Zhang","doi":"10.1680/jadcr.23.00141","DOIUrl":null,"url":null,"abstract":"The effects of chlorides on the corrosion of steel bars within a matrix comprising modified magnesium oxysulfide (MMOS) cementitious materials was investigated in this study, containing the phase composition, morphology, and distribution of steel corrosion products. The results showed that there was basically no corrosion of the steel bars in MMOS cement without chlorides. The presence of high chloride content and a high water-cement ratio in MMOS matrix had adverse effects on the corrosion of steel bars. The primary product of steel corrosion in MMOS was FeOOH and Fe2O3, while FeO was only observed at low water cement ratios, indicating a lower degree of oxidation. Moreover, the presence of Fe2(CO)9 at high water cement ratios suggests a higher degree of oxidation. At lower water-cement ratios, rust products readily diffused; Conversely, at higher ratios, these products accumulated in proximity to the steel bars, forming a compact structure.","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":"47 2","pages":""},"PeriodicalIF":17.7000,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1680/jadcr.23.00141","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The effects of chlorides on the corrosion of steel bars within a matrix comprising modified magnesium oxysulfide (MMOS) cementitious materials was investigated in this study, containing the phase composition, morphology, and distribution of steel corrosion products. The results showed that there was basically no corrosion of the steel bars in MMOS cement without chlorides. The presence of high chloride content and a high water-cement ratio in MMOS matrix had adverse effects on the corrosion of steel bars. The primary product of steel corrosion in MMOS was FeOOH and Fe2O3, while FeO was only observed at low water cement ratios, indicating a lower degree of oxidation. Moreover, the presence of Fe2(CO)9 at high water cement ratios suggests a higher degree of oxidation. At lower water-cement ratios, rust products readily diffused; Conversely, at higher ratios, these products accumulated in proximity to the steel bars, forming a compact structure.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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
