Filtern
Erscheinungsjahr
- 2007 (7) (entfernen)
Dokumenttyp
- Vortrag (3)
- Zeitschriftenartikel (2)
- Beitrag zu einem Tagungsband (2)
Schlagworte
- Black Steel (1)
- Cement (1)
- Chlorides (1)
- Concrete parameters (1)
- Corrosion (1)
- Electrochemical noise (1)
- Metallographic section (1)
- Mortar (1)
- Pitting Corrosion (1)
- Reinforcement (1)
Eingeladener Vortrag
- nein (3)
Corrosion of steel reinforcement in concrete exposed to chloride containing environments is a serious problem in civil engineering practice. The standards and guidelines contain only minimum requirements regarding concrete quality and concrete cover. In very critical cases, for example the ingress of chlorides, the application of different coatings is currently the only possibility to protect the reinforced concrete structures. In this case the modelling of reinforcement corrosion would be more practical. One sub-project of a DFG-research project (FOR 537) is currently performed at the Federal Institute for Materials Research and Testing (BAM). Aim of the sub-project is the description of corrosion propagation and the characterization of the corrosion on specimens with small and large cathodes, by electrochemical parameters. The electrochemical parameters are determined by suitable electrochemical measurements, considering concrete parameters as well as different environmental conditions.
Electrochemical noise measurements on unalloyed steel in chloride-containing alkaline environment
(2007)
The investigations discussed in this paper aim to clarify whether electrochemical noise measurements (ENM) are capable for application in concrete and mortar, particularly with regard to pitting initiation in such environment. For these purposes, the results of several different test series are compared and discussed. Based on investigations on passivity and pitting corrosion in alkaline solutions with different chloride contents further results in cement paste, mortar and concrete are evaluated.