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1.序言提高钢筋混凝土建筑物的耐久性是大家一直都在考虑的问题。但是,由于近年来钢筋混凝土建筑物周围环境的急剧变化、设计条件、耐用期限及混凝土骨料情况的恶化等原因,人们正在重新研究耐久性这一问题。混凝土中钢筋的腐蚀与耐久性有极为密切的关系。引起这种钢筋腐蚀的原因,有化学的、物理的及电的三种作用,也可以看作是这三种作用的综合效果。本文就钢筋混凝土建筑物中钢筋腐蚀机理和主要原因(混凝土的碳化、海产骨料、海水、化学侵蚀、裂缝、冻融的交替作用、电蚀等)以及防腐方法作一概述。
1. Preface The improvement of the durability of reinforced concrete buildings has always been a matter of concern. However, due to rapid changes in the surrounding environment of reinforced concrete buildings, design conditions, durability, and deterioration of concrete aggregates in recent years, people are re-examining the problem of durability. Corrosion and durability of reinforcing bars in concrete are extremely closely related. Caused by the corrosion of this steel, there are three kinds of chemical, physical and electrical effects, can also be seen as the combined effect of these three effects. This article gives an overview of the corrosion mechanism and main reasons of reinforcement in reinforced concrete buildings (concrete carbonation, marine aggregate, seawater, chemical erosion, cracks, alternating freeze-thaw effects, electric erosion, etc.) and anti-corrosion methods.