ABSTRACT
Reinforced concrete bridges are deteriorating largely due to the effects of corrosion of the reinforcing steel initiated by chlorides from road de-icing salt. This deterioration has resulted in the need for major repair work typically when the bridge is only about 20 years old [1], Bridges are designed for a life of 120 years and although this includes provision for periodic maintenance, a maintenance free life (MFL) of only 20 years is not satisfactory particularly as the methods for repairing corroded reinforced concrete are not well established [2,3]
In order to overcome these difficulties the industry has developed a number of design details and materials for new construction aimed at preventing or delaying the onset of corrosion (Table 1).
