MAPPING OF ATMOSPHERIC CORROSION OF STEEL IN SOUTHEAST INDIA USING INVERSE DISTANCE INTERPOLATION TECHNIQUE

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-05-22 DOI:10.5006/4535

J. Daniel Ronald Joseph, M. Ashok

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Abstract

Reinforced concrete and steel structural elements undergo premature degradation and lose strength primarily due to corrosion. Corrosion is an electrochemical phenomenon and its severity depends on number of environmental factors. Experimental data on corrosion of steel is important for making engineering decisions towards improving the service life of civil infrastructures. No recent dataset on atmospheric steel corrosion under Indian coastal environment is found to be available in the literature, and hence this research attempts to address some of the literature gap. This paper presents experimental study conducted to determine the corrosion rate of TMT, high-chromium steel (CRS) and stainless steel rebars exposed in actual coastal and inland regions for a period of one year. The site locations were located in southeastern parts of Tamilnadu state in India. Based on the first-year corrosion rate, the corrosion rate after extended exposure (10-years) was determined based on ISO 9224 recommendations. Atmospheric steel corrosion map of Tamilnadu state was developed using inverse distance interpolation technique. Microstructural studies indicated the formation of lepidocrocite (γ-FeOOH) phase composition in the rust products collected from coastal region.

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利用反距离插值技术绘制印度东南部钢铁大气腐蚀图

钢筋混凝土和钢结构构件会过早退化并失去强度，这主要是由于腐蚀造成的。腐蚀是一种电化学现象，其严重程度取决于多种环境因素。有关钢材腐蚀的实验数据对于提高民用基础设施使用寿命的工程决策非常重要。文献中没有关于印度沿海环境下大气钢腐蚀的最新数据集，因此本研究试图填补部分文献空白。本文介绍了为确定暴露在实际沿海和内陆地区一年的 TMT、高铬钢 (CRS) 和不锈钢螺纹钢的腐蚀速率而进行的实验研究。研究地点位于印度泰米尔纳德邦东南部。在第一年腐蚀率的基础上，根据 ISO 9224 建议确定了长期暴露（10 年）后的腐蚀率。使用反距离插值技术绘制了泰米尔纳德邦大气钢腐蚀图。微观结构研究表明，在沿海地区采集的锈蚀产物中形成了鳞片钙钛矿（γ-FeOOH）相组成。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

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.