dc.contributor.author | Polder, Rob | |
dc.contributor.author | Geiker, Mette Rica | |
dc.date.accessioned | 2018-05-16T09:11:22Z | |
dc.date.available | 2018-05-16T09:11:22Z | |
dc.date.created | 2018-01-16T08:51:13Z | |
dc.date.issued | 2017 | |
dc.identifier.isbn | 978-82-8208-054-5 | |
dc.identifier.uri | http://hdl.handle.net/11250/2498323 | |
dc.description.abstract | Conventional concrete patch repairs have poor durability: 50% fail within ten years. A major cause is insufficient removal of contaminated concrete and insufficient steel cleaning. Chlorides left behind reactivate the corrosion process. The effects of various cleaning methods of reinforcing steel suffering chloride induced corrosion were compared in a demonstrator in form of a concrete slab. Rebars were cleaned by A) applying 5 A/m2 direct current for 24 hours in tap water saturated with calcium hydroxide according to a patented method, “Electro Active Repair (EAR)”, B) blasting using rubber particles (sponge jet), C) steel wire brushing, or D) not cleaned. The main conclusion is that applying electrical current for a short period (24 h) effectively removed chloride from corrosion products and pits, and increased the pH of the solution in corrosion pits. Consequently, adding cleaning of the rebars by EAR to the conventional repair process is expected to improve the durability of conventional concrete repair. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Norsk Betongforening | nb_NO |
dc.relation.ispartof | Proceedings of The Eleventh High Performance Concrete (11th HPC) & The Second Concrete Innovation Conference (2nd CIC) Tromsø, Norway 2017 | |
dc.title | Electro active repair of concrete demonstration of applicability | nb_NO |
dc.type | Chapter | nb_NO |
dc.description.version | acceptedVersion | nb_NO |
dc.identifier.cristin | 1543642 | |
dc.description.localcode | This chapter will not be available due to copyright restrictions (c) 2017 by Norsk Betongforening | nb_NO |
cristin.unitcode | 194,64,45,0 | |
cristin.unitname | Institutt for konstruksjonsteknikk | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |