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FEM‐models for the propagation period of chloride induced reinforcement corrosion
Author(s) -
Redaelli E.,
Bertolini L.,
Peelen W.,
Polder R.
Publication year - 2006
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.200603994
Subject(s) - corrosion , chloride , galvanic cell , finite element method , materials science , reinforced concrete , reinforcement , coupling (piping) , composite material , geotechnical engineering , metallurgy , structural engineering , geology , engineering
The paper reports the results of numerical simulations carried out with FEM and aimed at evaluating the corrosion conditions of steel bars in concrete elements subjected to chlorides. Two case studies were analysed: a reinforced concrete element subjected to de‐icing salt in the presence of a crack and a concrete tunnel in a chloride‐contaminated, water saturated soil. Attention was focused on the selection of proper values of concrete resistivity and of the parameters suitable to describe the electrochemical behaviour of steel in the different conditions of exposure. The results allowed to quantify the effects of the galvanic coupling between active and passive areas on the corrosion rate of steel.