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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Durability of Local Repair Measures on Concrete Structures Damaged by Reinforcement Corrosion
Author(s): P. Schiebl, W. breit, and M. Raupach
Publication: Special Publication
Appears on pages(s): 1195-1216
Keywords: carbonation; chlorides; coatings; concretes; corrosion; spalling; corrosion resistance; cracking (fracturing); damage; durability; repairs; steels; Construction
Abstract:First results of the investigation of the corrosion behavior of steel in concrete after local repair measures are described. The examinations in this research project refer to construction practice where local damage due to reinforcement corrosion, e.g., spalls and cracks, is repaired in the area of visible surface damage only. When dealing with damage in this way, the carbonated or chloride contaminated concrete is often not removed completely, thus avoiding stability problems with the structure. Following such a repair measure, reinforcement areas consequently remain, in which there is no guarantee of sufficient corrosion protection and which, therefore, are subject to a higher corrosion risk. With the help of macrocell current measurements between different steel electrodes embedded in concrete, the study investigated circumstances and extent of corrosion problems before and after local repair measures. Further investigation dealt with the measures that have to be taken to guarantee corrosion protection after local repairs.
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