Modern non-destructive evaluations of the corrosion of steel in concrete structures

• Autorzy: Sadowski Ł.
• Języki publikacji: EN

Abstrakty

EN

This paper reviews a new technique which can be suitable for the evaluation of the corrosion rate of steel in concrete structures. The new method adapts the idea of the Wenner four point probe with two copper/copper sulphate half-cells in the center. These two types connected with each other can give us a new rapid technique for the evaluation of the reinforcement corrosion rate. This project was conducted over a period of 5 months in collaboration with The Construction and Infrastructure Research Group from The University of Liverpool. It has been observed that the novel DC Wenner method can be used to determine the probable location and rate of corrosion of the reinforcing steel in concrete structures, without the need for a direct electrical connection to the steel. However, this method requires further development.

Słowa kluczowe

EN

corrosion; resistivity; Wenner four points method; concrete structures; non-destructive testing

• Wydawca: Wydawnictwo Politechniki Poznańskiej
• Czasopismo: Foundations of Civil and Environmental Engineering
• Rocznik: 2010
• Tom: No. 13
• Strony: 43--55
• Opis fizyczny: Bibliogr. 11 poz., rys., tab.

Twórcy

autor

Sadowski Ł.

• Wroclaw University of Technology - Institute of Building Engineering

Bibliografia

• 1. Gowers K.R., Millard S.G.: Electrochemical techniques for corrosion assessment of reinforced concrete structures. Proc. Instn Civ. Engrs Structs & Bldgs 1999, Paper 11797
• 2. Millard S. G., Gowers K. R., Bungey J. H.: Galvanostic pulse technique - a rapid method of assessing corrosion rates of steel in concrete structures, Corrosion 95 - The NACE International Annual Conference and Corrosion Show, paper 525
• 3. Millard S.G., Harrison J. A., Edwards A. J.: Measurement of the electrical resistivity of reinforced concrete structures for the assessment of corrosion risk. ACI Materials Journal/November 1989
• 4. Monteiro J.M., Morrison F., Frangos W.: Nondestructive measurement of corrosion state reinforcing steel in concrete. ACI Materials Journal/ November-December 1998
• 5. Millard S.G.: Reinforced concrete resistivity measurement techniques. Structural and building board paper 9674. 1991
• 6. Bungey J. H, Millard S. G.: Testing of concrete in structures. Glasgow 1996
• 7. Gowers K. R., Millard S. G.: Measurement of concrete resistivity for assessment corrosion severity of steel using Wenner technique. ACI Materials Journal/ September - October 1999
• 8. Stern, M. & Geary, A.L.: “Electrochemical Polarization. A Theoretical Analysis of Shape of Polarization Curves”, Journal of the Electrochemical Society, Vol. 104, 1957, page 56-63
• 9. Moczko A., Łakomy T.: Metody nieniszczącej diagnostyki zagrożenia korozyjnego stali zbrojeniowej w konstrukcjach betonowych. Polski Cement, 2002, Nr 2 (18), page 48-50
• 10. Millard S G, Gowers K R: Practical measurement of concrete resistivity, Vol 33 No 2 February 1991
• 11. Feliu, S.: Techniques to Assess the Corrosion Activity of Steel Reinforced Concrete Structures. ASTM STP 1276.