1. A novel method to assess mass loss of aluminium in concrete.
- Author
-
Herting, Gunilla, Karlsson, Maria‐Elisa, and Odnevall Wallinder, Inger
- Subjects
- *
ALUMINUM , *CONCRETE , *CORROSION & anti-corrosives , *METALLIC surfaces , *HAZARDOUS substances - Abstract
A novel pickling procedure for aluminium is elaborated for successful removal of corrosion products on aluminium embedded and exposed in concrete, allowing subsequent mass loss evaluation. The current recommended standard procedures for mass loss evaluation of aluminium are not sufficiently effective, either leaving significant amounts of concrete and corrosion products on the aluminium surfaces after pickling, or containing hazardous chemicals. Removal of both concrete and corrosion products from the aluminium surfaces require a stepwise combination of an aqueous glycine solution, nitric acid at elevated temperature and careful manual removal of adherent concrete. To enable successful removal of complex corrosion products from aluminium embedded in concrete a novel pickling method was elaborated to facilitate mass loss evaluation. In addition to weighing throughout the pickling procedure, efficient corrosion product removal was confirmed visually and through SEM investigations. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF