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Critical chloride content for reinforced concrete and its relationship to concrete resistivity
Author(s) -
Polder R. B.
Publication year - 2009
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.200905302
Subject(s) - electrical resistivity and conductivity , content (measure theory) , corrosion , service life , reinforced concrete , chloride , cement , reinforcement , materials science , forensic engineering , geotechnical engineering , structural engineering , engineering , composite material , metallurgy , mathematics , mathematical analysis , electrical engineering
The critical chloride content for initiation of reinforcement corrosion is an essential element in service life design and modelling of concrete structures. The critical content is laden with questions regarding its definition, experimental assessment and practical aspects. It should be addressed by a statistical approach. The paper discusses such issues, presents experimental evidence and considers its relationship to the electrical resistivity of concrete. A low concrete resistivity can be theoretically argued to relate to a low critical chloride content. However, only part of the experimental data supports this. The resolution of available data does not allow distinction with regard to the critical content between cement types.