A 10-year study of the corrosion resistance of stainless steels used as reinforcement in chloride-contaminated concrete exposed to severe conditions

IF 3.4 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY Materials and Structures Pub Date : 2024-10-10 DOI:10.1617/s11527-024-02468-x

Véronique Bouteiller, Thierry Chaussadent, Eric Chauveau, Amandine Bonnet, Philippe Mauger, Victor Da-Silva

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Abstract

The corrosion of carbon steel reinforcements is the main cause of deterioration in reinforced concrete structures. Stainless steel can be a solution to increase the service life of structures exposed to severe chloride environments. This paper describes the results obtained in an experimental study seeking to monitor corrosion over a long-term period (10 years) without the use of accelerated tests. Concrete samples containing admixed chloride and reinforced with 5 different steel grades were exposed to high temperature and high relative humidity in a climatic chamber for 10 years. Visual inspection, corrosion potential, linear polarisation resistance and electrochemical impedance spectroscopy measurements were carried out throughout this period. Corrosion current density was calculated to monitor the evolution of corrosion. The methodology was validated on a martensitic stainless steel (grade 1.4021) with the original finding that corrosion occurs over three time steps. None of the duplex steels (grades 1.4062, 1.4362 and 1.4462) showed corrosion after 10 years, making them a very interesting solution for structures located in severe chloride environments. Mass loss corrosion laws over time were determined. Prediction of corrosion was discussed.Please check and confirm the edit made in the article title.confirmedKindly check and confirm the organization name for affiliations 1 and 2.affiliation 1: OK affiliation 2: OK

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对暴露在严酷条件下受氯化物污染的混凝土中用作钢筋的不锈钢的耐腐蚀性进行为期 10 年的研究

碳钢钢筋的腐蚀是钢筋混凝土结构老化的主要原因。不锈钢是延长暴露在严重氯化物环境中的结构使用寿命的一种解决方案。本文介绍了一项实验研究的结果，该研究试图在不使用加速试验的情况下对腐蚀情况进行长期（10 年）监测。含有掺入氯化物并用 5 种不同等级钢筋加固的混凝土样品在高温和高相对湿度的气候箱中暴露了 10 年。在此期间进行了目测、腐蚀电位、线性极化电阻和电化学阻抗谱测量。通过计算腐蚀电流密度来监测腐蚀的演变情况。该方法在马氏体不锈钢（牌号 1.4021）上进行了验证，最初发现腐蚀发生在三个时间阶段。双相钢（牌号 1.4062、1.4362 和 1.4462）在 10 年后均未出现腐蚀，这使它们成为位于严重氯化物环境中的结构的一种非常有趣的解决方案。确定了质量损失随时间变化的腐蚀规律。请检查并确认文章标题中的编辑内容。请检查并确认附属机构 1 和 2 的组织名称。附属机构 1: OK附属机构 2: OK

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来源期刊

Materials and Structures 工程技术-材料科学：综合

CiteScore

6.40

自引率

7.90%

发文量

222

审稿时长

5.9 months

期刊介绍： Materials and Structures, the flagship publication of the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM), provides a unique international and interdisciplinary forum for new research findings on the performance of construction materials. A leader in cutting-edge research, the journal is dedicated to the publication of high quality papers examining the fundamental properties of building materials, their characterization and processing techniques, modeling, standardization of test methods, and the application of research results in building and civil engineering. Materials and Structures also publishes comprehensive reports prepared by the RILEM’s technical committees.