Michel, Alexander1; Solgaard, Anders Ole Stubbe1; Pease, Bradley Justin1; Geiker, Mette Rica1; Stang, Henrik1; Olesen, John Forbes1
1 Department of Civil Engineering, Technical University of Denmark2 Section for Structural Engineering, Department of Civil Engineering, Technical University of Denmark
Cracks in covering concrete are known to hasten initiation of steel corrosion in reinforced concrete structures. To minimise the impact of cracks on the deterioration of reinforced concrete structures, current approaches in (inter)national design codes often limit the concrete surface crack width. Recent investigations however, indicate that the concrete-reinforcement interfacial condition is a more fundamental criterion related to reinforcement corrosion. This work investigates the relation between macroscopic damage at the concrete-steel interface and corrosion initiation of reinforcement embedded in plain and fibre reinforced concrete. Comparisons of experimental and numerical results indicate a strong correlation between corrosion initiation and interfacial condition.
Corrosion Science, 2013, Vol 77, p. 308-321
A. Steel reinforced concrete; C. Atmospheric corrosion