TY - JOUR A1 - Dang, V.H. A1 - Francois, R. A1 - L'Hostis, V. A1 - Meinel, Dietmar T1 - Propagation of corrosion in pre-cracked carbonated reinforced mortar N2 - This paper deals with the initiation and propagation of corrosion in mortar specimens pre-cracked under mechanical loading and carbonated in climate accelerated conditions (50 % CO2–65 % RH) for 15–23 weeks. Mechanical loading led to transverse macro-cracks and damage at the steel-mortar interface characterized by micro-cracks (cover controlled cracking) which favour the carbonation of crack walls and the interface with the steel bar. Wetting–drying cycles performed after carbonation favoured corrosion initiation all along the steel bar because of the carbonated interface and corrosion propagation because of the creation of corrosion cracks which appear to develop from the micro-cracks induced by the mechanical load. Results also show that rust develops all around the perimeter of the carbonated steel bar but that the corrosion layer is thicker in the lower half surface of the reinforcement than that observed in the upper half. Results indicate that the distribution and composition of corrosion products depend on the thickness of the rust layer and that the multilayered structure of rust depends mainly on its thickness. KW - Carbonation KW - Crack KW - Steel bar KW - Propagation of corrosion KW - Raman spectra KW - Corrosion product KW - X-ray tomography KW - CT PY - 2014 UR - http://link.springer.com/article/10.1617/s11527-014-0338-z/fulltext.html U6 - https://doi.org/10.1617/s11527-014-0338-z SN - 1359-5997 SN - 1871-6873 VL - 48 IS - 8 SP - 2575 EP - 2595 PB - Springer CY - Dordrecht AN - OPUS4-31290 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -