Korrosionsmonitoring zum Wirksamkeitsnachweis des Instandsetzungsverfahrens 8.3 (W-Cl)

Julia Wunderle-Beck, Till Felix Mayer, Christoph Zausinger, Christoph Gehlen

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Corrosion Monitoring as Proof of Efficiency for the Repair Method W-Cl/8.3. In Germany, the repair of parking and traffic infrastructure due to chloride-induced reinforcement corrosion causes annual costs of some Billion Euros. In addition, in the case of parking structures further significant costs will arise from use restrictions and loss of earnings during this time. Therefore, there is a growing need for both fast and economic repair measures for chloride-induced reinforcement corrosion. One possible approach is the repair method W-Cl according to RL-SIB [1] or method 8.3 according to TR-IH [2] respectively, for which no chloride-contaminated concrete needs to be removed. However, this repair method has a significantly higher risk of failure than conventional concrete repair methods and consequently, it can only be carried out in combination with an adequate corrosion monitoring system. In this report a study on the effectiveness of repair method 8.3 is presented which is based on the results of 130 corrosion sensors from five different reference objects. The sensor setup for corrosion monitoring is explained and different criteria for the assessment of the effectiveness are presented and compared. Finally, the data is analyzed with respect to the mechanism of action and limitations of the repair method.

Original languageGerman
Pages (from-to)976-984
Number of pages9
JournalBeton- und Stahlbetonbau
Volume117
Issue number12
DOIs
StatePublished - Dec 2022

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