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Full surface inspection methods regarding reinforcement corrosion of concrete structures |
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| Authors: | K. Reichling M. Raupach J. Broomfield J. Gulikers V. L'Hostis S. Kessler K. Osterminski I. Pepenar U. Schneck G. Sergi G. Taché |
| Affiliation: | 1. Institute for Building Materials Research (ibac), RWTH Aachen University, Schinkelstr. 3, 52062 Aachen (Germany);2. Consulting Corrosion Engineer, The Garage Loft, 30B Vine Road, East Molesey, Surrey KT8 9LF (United Kingdom);3. Research Department, Bouwdienst Rijkswaterstaat, P. O. Box 20000, 3502 LA Utrecht (Netherlands);4. Laboratoire d'étude du Comportement des Bétons et des Argiles, DEN/DPC/SCCME/LECBA Bat. 158, CEA Saclay, 91191 Gif sur Yvette Cedex (France);5. TU Munich, Centrum Baustoffe und Materialprüfung (cbm), Baumbachstra?e 7, 81245 München (Germany);6. ICECON GROUP‐Research Centre CERTINCON, Sos. Pantelimon 266, Sector 2, 021652 Bucharest (Romania);7. CITec GmbH, Dresdner Str. 42, 01156 Dresden OT Cossebaude (Germany);8. Vector Corrosion Technologies, 17 Ribbesford Close, Halesowen, West Midlands B632AR (United Kingdom);9. CEBTP, Domain de St. Paul, 78470 St. Rémy les Chevreuse (France) |
| Abstract: | For reinforced concrete structures a localisation of all significant critical areas can only be done by a full surface inspection. The economic advantages are obvious: uncritical areas have not to be repaired expensively 1 . The first step of the assessment should always be a visual inspection 2 . The range of deterioration causes can be limited and the degree of deterioration may be estimated roughly. The inspection program can be adjusted to the requirements. By means of a full surface potential mapping areas with a high risk for chloride induced reinforcement corrosion can be localised, although no deteriorations are visually detectable at the concrete surface. In combination with concrete cover depth and resistivity measurements areas with corrosion promoting exposure conditions can be localised even if the reinforcement is not yet depassivated. The following publication gives an overview about the essential full surface investigation methods to localise critical areas regarding corrosion of steel in concrete. The selection of methods is based on the inspection procedure given in 2 . |
| Keywords: | concrete cover depth concrete resistivity corrosion of steel in concrete deteriorations inspection non‐destructive methods potential mapping reinforced concrete |