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Updated: Oct 17, 2025

Experimental Protocol to Determine the Chloride Threshold Value for Corrosion in Samples Taken from Reinforced Concrete Structures
Published on: August 31, 2017
Duplex Steels Used in Building Structures and Their Resistance to Chloride Corrosion
Mariusz Maslak1, Marek Stankiewicz1, Benedykt Slazak2
1Faculty of Civil Engineering, Cracow University of Technology, Warszawska 24, 31-155 Cracow, Poland.
Abstract:
Welded structures made of duplex steels are used in building applications due to their resistance to local corrosion attack initiated by chlorides. In this paper, the material and technological factors determining the corrosion resistance are discussed in detail. Furthermore, recommendations are formulated that allow, in the opinion of the authors, to obtain a maximum corrosion resistance for welded joints. The practical aspects of corrosion resistance testing are also discussed, based on the results of qualification tests. This work is of a review character. The conclusions and practical recommendations are intended for contractors and investors of various types of structures made of the duplex steel. The recommendations concern the selection and use of duplex steels, including the issues of metallurgy, welding techniques, and corrosion protection.
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