The Role of Corrosion Inhibitors in High-Performance Concrete


  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal


Title: The Role of Corrosion Inhibitors in High-Performance Concrete

Author(s): Theodor A. Burge

Publication: Special Publication

Volume: 172


Appears on pages(s): 375-396

Keywords: Admixtures; concretes; mixed corrosion resistance; reinforcing steels

Date: 12/1/1999

This paper deals with a new generation of corrosion inhibitors, the so called mixed inhibitors. Mixed inhibitors influence both the anodic and the cathodic sites in reinforced concrete by the formation of an adsorbed layer. Nitrogen is usually the active atom in the adsorbed layer. Typical compounds of nitrogen used as inhibitors are amines. The bond strength of the adsorbed layers is due to the nitrogen atom’s high density of electrons and ability to form co-ordinate bonds. Extensive tests have shown that this type of corrosion inhibitors do not negatively influence the fresh and hardened concrete properties. The mode of action of these inhibitors has been investigated by different methods, cracked beam tests, X-ray Photoelectron Microscopy (XPM), X-ray Photoelectron Spectroscopy (XPS), Secondary Ion Mass Spectroscopy (SIMS) and Secondary Neutron Mass Spectroscopy (SNMS).