Overview
Given the technical and economic importance of repairing traffic infrastructure all possible methods should be carefully considered. In particular, procedures and measures should be examined, which represent an innovation that allows an increase in efficiency and / or a reduction in costs.
For these reasons, research in Switzerland on the use of inhibitors for the repair of reinforced concrete structures focuses on exploring the economic and technical potential and the limits of the repair process of chloride contamination.
The goal of this research project is to investigate the economic and technical potential of new corrosion inhibitors for the cost effective repair of chloride contaminated reinforced concrete structures. The efficacy of corrosion inhibitors should be tested using laboratory experiments simulating the practical conditions of repairs.
Advice for a practical use of inhibitors and for pilot projects will be derived from the project results.
First: In-depth literature review, contact with other research groups and potential suppliers, laboratory tests to assess the impact of the order of liquid inhibitors.
Concrete cone surfaces on the tensile bond strength of repair mortars as in repairs will be used after the concrete removal was investigated.
Based on these results, systems for the subsequent corrosion tests will be
selected. Using the corrosion tests, the conditions are in the use of inhibitors for the repair of reinforced concrete structures with chloride-induced corrosion.
Simulated reinforcement on the laboratory scale and the effectiveness of inhibitors
(Inhibitor-containing repair mortars etc.) are reviewed and assessed.
Funding
Results
Publications and lectures:
F. Hunkeler, B. Mühlan und H. Ungricht, Korrosionsinhibitoren für die Instandsetzung chloridverseuchter Stahlbetonbauten, FA AGB 2002/016, Bericht VSS Nr. 630, August 2010.
Practical recommendation for the use of inhibitors for the repair of reinforced concrete structures chloride contaminated.
Basis for a test standard for assessing the efficacy of inhibitors.