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A platform for research: civil engineering, architecture and urbanism
Mathematical modeling for corrosion environment estimation based on concrete resistivity measurement directly above reinforcement
This study aims to formulate a resistivity model whereby the concrete resistivity expressing the environment of steel reinforcement can be directly estimated and evaluated based on measurement immediately above reinforcement as a method of evaluating corrosion deterioration in reinforced concrete structures. It also aims to provide a theoretical ground for the feasibility of durability evaluation by electric non-destructive techniques with no need for chipping of cover concrete. This Resistivity Estimation Model (REM), which is a mathematical model using the mirror method, combines conventional four-electrode measurement of resistivity with geometric parameters including cover depth, bar diameter, and electrode intervals. This model was verified by estimation using this model at areas directly above reinforcement and resistivity measurement at areas unaffected by reinforcement in regard to the assessment of the concrete resistivity. Both results strongly correlated, proving the validity of this model. It is expected to be applicable to laboratory study and field diagnosis regarding reinforcement corrosion.
Mathematical modeling for corrosion environment estimation based on concrete resistivity measurement directly above reinforcement
This study aims to formulate a resistivity model whereby the concrete resistivity expressing the environment of steel reinforcement can be directly estimated and evaluated based on measurement immediately above reinforcement as a method of evaluating corrosion deterioration in reinforced concrete structures. It also aims to provide a theoretical ground for the feasibility of durability evaluation by electric non-destructive techniques with no need for chipping of cover concrete. This Resistivity Estimation Model (REM), which is a mathematical model using the mirror method, combines conventional four-electrode measurement of resistivity with geometric parameters including cover depth, bar diameter, and electrode intervals. This model was verified by estimation using this model at areas directly above reinforcement and resistivity measurement at areas unaffected by reinforcement in regard to the assessment of the concrete resistivity. Both results strongly correlated, proving the validity of this model. It is expected to be applicable to laboratory study and field diagnosis regarding reinforcement corrosion.
Mathematical modeling for corrosion environment estimation based on concrete resistivity measurement directly above reinforcement
Mathematische Modellierung zur Untersuchung der Korrosionsumgebung auf Basis von Betonwiderstandsmessungen direkt oberhalb des Bewehrungsstahls
Lim, Young-Chul (author) / Noguchi, Takafumi (author) / Lee, Han-Seung (author)
ISIJ International ; 49 ; 92-99
2009
8 Seiten, 10 Bilder, 1 Tabelle, 20 Quellen
Article (Journal)
English
| British Library Online Contents | 2015
An experimental study on correlation between concrete resistivity and reinforcement corrosion rate
| British Library Online Contents | 2014