Galvanic corrosion protection of steel in concrete with a zinc mesh anode embedded into a solid electrolyte (EZA): Operational data and service time expectations

Author(s): W. Schwarz, F. Müllner, A. van den Hondel
Paper category: Conference
Book title: Concrete Repair, Rehabilitation and Retrofitting III (ICCRRR)
Editor(s): M.G. Alexander, H.-D. Beushausen, F. Dehn, P. Moyo
Print ISBN: 978-0-415-89952-9
Publisher: Taylor & Francis Group
Pages: 357- 358
Total Pages: 2
Language: English

Abstract: 
The efficiency of the Galvanic Corrosion Protection (GCP) of the steel reinforcement of a novel Embedded Zinc Anode (EZA) is evaluated on three types of civil structures—a road bridge (cantilevers, part of the underside the bridge deck and an abutment) in the Styrian Alps in Austria, concrete abutments of a steel bridge and support-beams for the bearings of a road bridge in the Netherlands. The EZA is applied to the surface of concrete members whose steel is to be protected from corrosion by embedding a zinc mesh (2–4 kg/m²) into a proprietary mortar that hardens to a solid electrolyte. The efficiency of the GCP was monitored with embedded reference cells, concrete resistivity—and macro cell sensors. Data collected over a period of up to nearly 5 years show that the EZA protects the steel reinforcement efficiently and reliably. Based on these data, estimation of expected service time is discussed.

Online publication: 2014
Publication Type: abstract_only
Public price (Euros): 0.00