Organic compounds as corrosion inhibitors for reinforced concrete: a review

IF 2.7 4区 材料科学 Q3 ELECTROCHEMISTRY Corrosion Reviews Pub Date : 2023-09-05 DOI:10.1515/corrrev-2023-0017
Leonardo X. Alvarez, Oladis Troconis de Rincón, Jorge Escribano, B. R. Rincon Troconis
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Abstract

Abstract With the goal of preventing concrete deterioration by means of destructive corrosion processes, the use of single organic compounds or mixtures as organic corrosion inhibitors (OCIs) instead of inorganic chemicals is becoming a very attractive practice. As OCIs are more ecologically friendly in their production and environmental fate, they have several advantages over well-known inorganic additives such as metallic nitrites, chromates, or arsenates. In this article, the application of different single organic compounds (of either natural or synthetic origin) as well as mixtures that have been used to lengthen the lifespan of concrete structures is reviewed. After a small exemplification of the use of single organic compounds bearing amino, hydroxy, formyl, or carboxylic functionalities, the more often used OCIs are reviewed according to their principal functional group. Afterward, the application of compound mixtures of either synthetic or natural origin, the use of natural extracts, and biomass are surveyed. Finally, the effects of functional groups within the top 10 inhibitor molecules, the toxicity of OCIs, their effects on the physical-mechanical properties of concrete, and their long-term performance are discussed.
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有机化合物作为钢筋混凝土缓蚀剂的研究进展
摘要为了防止混凝土因破坏性腐蚀过程而恶化,使用单一有机化合物或混合物作为有机缓蚀剂(OCIs)代替无机化学品正成为一种非常有吸引力的做法。由于oci在生产和环境方面更加生态友好,与众所周知的无机添加剂(如金属亚硝酸盐、铬酸盐或砷酸盐)相比,它们具有几个优势。在这篇文章中,应用不同的单一有机化合物(无论是天然或合成来源)以及混合物,已用于延长混凝土结构的寿命进行了回顾。在对具有氨基、羟基、甲酰基或羧基官能团的单一有机化合物的使用进行了一个小例子之后,根据它们的主要官能团对更常用的oci进行了审查。然后,对合成或天然来源的化合物混合物的应用、天然提取物的使用和生物质进行了调查。最后,讨论了前10种抑制剂分子中官能团的影响、OCIs的毒性、它们对混凝土物理力学性能的影响以及它们的长期性能。
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来源期刊
Corrosion Reviews
Corrosion Reviews 工程技术-材料科学:膜
CiteScore
5.20
自引率
3.10%
发文量
44
审稿时长
4.5 months
期刊介绍: Corrosion Reviews is an international bimonthly journal devoted to critical reviews and, to a lesser extent, outstanding original articles that are key to advancing the understanding and application of corrosion science and engineering in the service of society. Papers may be of a theoretical, experimental or practical nature, provided that they make a significant contribution to knowledge in the field.
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