Abstract
The causes of premature degradation of concrete structures are many. The main causes are poor design and detailing, poor execution and poor communications. Rarely is the cause of degradation some unknown cause that could not have been addressed at the time of design and construction. Most premature degradation is caused by poor durability and not by inherent structural shortcomings. Lack of the specified cover is still the most common cause of corroding reinforcement and recent surveys show that the industry has still not properly addressed this issue. The solution to this main cause of poor performance only needs the application of existing knowledge. Adequate performance can be achieved from most structures with the appropriate choice of concrete cover and quality. A small, but important, percentage of concrete structures need additional methods such as those being presented in this seminar. These techniques have their place but they are not a substitute for getting the basics right. (A) For the covering abstract see ITRD E106702.
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