Fundamental understanding of the corrosion behavior of galvanized steel reinforcement in mechanically stabilized earth walls

在过去的30年里，机械稳定土（MSE）墙体和立面的使用在北美得到了广泛的接受，许多已完成的结构就是证明。MSE壁和面板暴露于恶劣环境可能导致早期失效，暴露于除冰盐的区域往往呈现与恶劣环境相似的状况。该项目旨在更好地了解镀锌钢在暴露于除冰盐和其他环境污染物时的腐蚀行为。该项目的目的是确定腐蚀条件下镀锌钢腐蚀的环境原因，并确定最佳的镀锌涂层特性和可能的表面处理方法，以提高MSE墙和饰面的耐腐蚀性，以便为腐蚀环境下MSE墙的施工制定一套施工指南。该研究将有助于了解MSE墙体和面板的腐蚀行为，从而更好地控制未来道路基础设施建设项目的质量，并优化操作参数。这项工作的结果对加拿大的私营部门以及运输和公共部门都很重要。这项工作对加拿大和保荐人的预期利益是巨大的，并将对其他加拿大公司在全球市场上有效竞争的能力产生影响。

The use of Mechanically Stabilized Earth (MSE) walls and facings have gained widespread acceptance in North America for the past 30 years, as evidenced by the numerous completed structures. Exposure of MSE walls and facings to aggressive conditions could lead to early failure, and areas exposed to de-icing salts tend to present conditions similar to aggressive environments. This project seeks to attain a better understanding of the corrosion behavior of galvanized steel when exposed to de-icing salts and other environmental pollutants. The objectives to this project are to ascertain the environmental causes of corrosion in galvanized steel under aggressive conditions, and to identify the optimum galvanized coating characteristics and possible surface treatments to improve the corrosion resistance of MSE walls and facings in order to create a set of construction guidelines for the construction of MSE walls under aggressive environments. The research will be highly beneficial to understand the corrosion behavior of MSE walls and facings which would allow better quality control in future road infrastructure construction projects and to optimize the operational parameters. The results of this work are of importance to the private sector, and also to the transportation and public sectors in Canada. The anticipated benefits of the work to Canada and the sponsor are significant and will have an impact on the ability of other Canadian companies to compete efficiently in the global market.