Novel method for linear polarisation resistance corrosion measurement
نویسندگان
چکیده
Linear Polarisation Resistance (LPR) can provide a direct evaluation of the instantaneous rate of corrosion. However it has the disadvantage of requiring a localised breakout of the concrete cover to provide an electrical connection to the steel reinforcement. This paper describes an adaptation of the LPR method and the four-point Wenner resistivity method to give an evaluation of the rate of steel corrosion without the requirement for a direct electrical connection to the steel reinforcement. Résumé La Résistance par Polarisation Linéaire (LPR) peut fournir une évaluation directe du taux instantané de corrosion. Cependant, elle a l'inconvénient de nécessiter une brèche localisée de la couverture du béton pour fournir une connexion électrique au renfort d'acier. Ce papier décrit une adaptation de la méthode LPR et de la méthode de résistivité Wenner à quatre points pour évaluer le taux de corrosion de l'acier sans besoin d’une connexion électrique directe au renfort d'acier.
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