Condition Assessment of Aging Concrete Structures—part 2

This two-part article is a review of the corrosion risk assessment, structural considerations, and engineering solutions for the steel-reinforced structural elements within an aging concrete building that exhibits accelerated corrosion in corrosive environments. Additionally, it examines factors that could potentially result in the progressive failure and eventual collapse of an aging building. Part 1 addressed the fundamentals of structural analysis, rebar corrosion, carbonation, and the role of chlorides. Part 2 addresses inspection and condition assessment procedures and recommendations, engineering solutions by coatings and cathodic protection (CP), a case history, and CP design of concrete rebar with finite element simulations. Procedures for inspection and condition assessment, recommendations, and engineering solutions are discussed.