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首页> 外文期刊>Cement & concrete composites >Corrosion inhibitors and other protective systems in concrete repair: concepts or misconcepts
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Corrosion inhibitors and other protective systems in concrete repair: concepts or misconcepts

机译：混凝土修复中的腐蚀抑制剂和其他保护系统：概念或错误观念

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摘要

In recent times in many parts of the world, reinforcement corrosion has become the main factor in early, premature deterioration, and sometimes failure, of concrete structures. One of the major factors contributing to this deterioration process is the environmental and climatic conditions to which a concrete structure is exposed. When the severity of environment is compounded with poor quality concrete and/or defective design and construction practices, the process of deterioration becomes interactive, cumulative and very rapid, and a cancerous growth that cannot be easily stopped. The poor durability performance of many concrete structures is causing disruption and expenditure on remedial works which owners and society cannot afford and do not wish to see repeated. A glimpse of reinforcement corrosion and some of the protection options is presented in this paper. The effect of corrosion inhibiting admixtures in concrete and concrete repair is discussed in detail. The complex issue related to the effectiveness of inhibitors in repairs is addressed, based on analysis of the differences between electrochemical activities in new and repaired structures. The paper concludes that as long as one continues to blindly use protection methods applicable for newly constructed structures for concrete repairs, the business of "repairing the repairs" will be on the rise. A broader understanding of the electrochemical differences between new and repaired concrete is necessary for effective protection of reinforcement in repaired structures.
机译：近年来，在世界许多地方，钢筋腐蚀已成为混凝土结构过早，过早劣化甚至有时失效的主要因素。导致这种劣化过程的主要因素之一是混凝土结构所暴露的环境和气候条件。当环境的严峻性与质量差的混凝土和/或有缺陷的设计和施工实践相结合时，恶化过程将变得相互作用，累积且非常迅速，并且癌变难以阻止。许多混凝土结构的耐用性差，导致维修工作的中断和支出，而业主和社会负担不起，也不希望重复施工。本文介绍了钢筋腐蚀和一些防护措施。详细讨论了缓蚀剂在混凝土和混凝土修复中的作用。基于对新结构和修复结构中电化学活性之间差异的分析，解决了与抑制剂在修复中的有效性有关的复杂问题。本文的结论是，只要人们继续盲目地使用适用于新建混凝土结构的保护措施进行“混凝土修复”，那么“修复修复”的业务就会越来越多。为了有效保护修复后的结构中的钢筋，必须对新混凝土和修复后的混凝土之间的电化学差异有更广泛的了解。

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