Repair of concrete members of seaside apartment buildings deteriorated by steel corrosion

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: 355- 356
Total Pages: 2
Language: English

Abstract: 
Apartment blocks erected on or near the seaside, especially on the Atlantic coast, are exposed to high sea salt loads. The sea salt is transported inland as a marine aerosol over long distances. Deposition on concrete structures, in combination with high humidity (>80% near sea side), may induce severe damages due to the corrosion of steel in concrete. Conventional repair would require replacement of the with chlorides contaminated concrete, cleaning and subsequent re encapsulation of the steel rebars and reprofiling. In many cases, e.g. balconies, these conventional repair techniques are not applicable. In the Netherlands, since about 8 years, an innovative technology, based on Cathodic Protection (CP) has been successfully employed using the composite anode system, for the repair and protection of balconies and concrete members of facades of apartment buildings near the marine coast line. The composite anode is easy to apply—like a conventional paint system—and has particular the advantage that only concrete that is mechanically damaged or is disbonded from the reinforcement has to be replaced. Structurally sound concrete may be left in place. The technology was successfully employed for the sustainable repair, protection and maintenance of apartment buildings in Scheveningen, Zandhorst, Bussum, Katwijk und Delft in the Netherlands.

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