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Technical Discussions
Massimo Schinelli
Consultant, Geotechnics
Schinelli Consulting, Italy, Joined Jan 2001, 8

Massimo Schinelli

Consultant, Geotechnics
Schinelli Consulting,
Italy,
Joined Jan 2001
8
07:03 Jan-18-2002
Steel reinforcement

I would like to have some suggestions concerning any NDT method for the evaluation of the corrosion of the reinforcement bars of some concrete structures. Please take into account that, if needed, some portions of the concrete can be also demolished to expose directly the steel bars.
Thank you very much in advance and best wishes.
Massimo Luca Schinelli
(Schinelli Consulting)


 
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Martin Schickert
R & D,
Institute for Materials Research and Testing, Germany, Joined Jan 2000, 18

Martin Schickert

R & D,
Institute for Materials Research and Testing,
Germany,
Joined Jan 2000
18
09:27 Jan-21-2002
Re: Steel reinforcement
: I would like to have some suggestions concerning any NDT method for the evaluation of the corrosion of the reinforcement bars of some concrete structures. Please take into account that, if needed, some portions of the concrete can be also demolished to expose directly the steel bars.
: Thank you very much in advance and best wishes.
: Massimo Luca Schinelli
: (Schinelli Consulting)
.

There is a method called electro-chemical potential measurement that allows a relatively quick survey be made for suspected corrosion areas. Only experienced persons should carry out such examinations since a number of parameters has influence on the results.

In Germany, e.g.

Baustoff- und Bodenprüfstelle Kassel
Mr. Dumat
Knorrstr. 32
D-34134 Kassel
Phone +49 (0561) 7286438

offers such analysis.

There are at least two standards on electro-chemical potential measurements:

1. Swiss standard:
Durchführung und Interpretation der Potentialmessung an Stahlbetonbauteilen.
Merkblatt 2006, Schweizerischer Ingenieur- und Architektenverein, Ausgabe 1993-02

2. U.S.-American standard:
Standard Test Method for Half-Cell Potentials of Uncoated Reinforcing Steel in Concrete.
ASTM, C876-91, 1991



 
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