Pregled bibliografske jedinice broj: 1099013
Corrosion of steel in carbonated concrete: mechanisms, practical experience, and research priorities – a critical review by RILEM TC 281-CCC
Corrosion of steel in carbonated concrete: mechanisms, practical experience, and research priorities – a critical review by RILEM TC 281-CCC // RILEM technical letters, 5 (2020), 85-100 doi:10.21809/rilemtechlett.2020.127 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 1099013 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Corrosion of steel in carbonated concrete:
mechanisms, practical experience, and research
priorities – a critical review by RILEM TC 281-CCC
Autori
Angst, Ueli ; Moro ; Fabrizio ; Geiker, Mette ; Kessler, Sylvia ; Beushausen, Hans ; Andrade, Carmen ; Lahdensivu, Jukka ; Köliö, Arto ; Imamoto, Kei-ichi ; von Greve-Dierfeld, Stefanie ; Serdar, Marijana
Izvornik
RILEM technical letters (2518-0231) 5
(2020);
85-100
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
carbonation, corrosion, durability, sustainability
Sažetak
Carbonation of concrete is generally assumed to lead to reinforcing steel corrosion. This mindset has long dictated the research priorities surrounding the developments towards new, low- emission binders. Here, by reviewing documented practical experience and scientific literature, we show that this widely held view is too simplistic. In fact, there are many cases from engineering practice where carbonation of the cementitious matrix surrounding the steel did not lead to noticeable corrosion or to corrosion-related damage at the level of a structure. The influencing factors that can, however, lead to considerable corrosion damage are identified as the moisture state, the microstructure of the carbonated concrete, various species that may be present – even in minor amounts – in the concrete pore solution, and the cover depth. The circumstance that a reduced pH alone is not sufficient to lead to significant steel corrosion in concrete seriously challenges the established approach of assessing the durability performance based on carbonation testing and modeling. At the same time, this circumstance offers great opportunities for reducing the environmental impact of concrete structures with low-emission binders. To realize these opportunities, the focus in research and engineering should shift from studying carbonation to studying corrosion of steel in carbonated concrete.
Izvorni jezik
Engleski
Znanstvena područja
Građevinarstvo, Temeljne tehničke znanosti
POVEZANOST RADA
Projekti:
--UIP-2017-05-4767 - Alternativna veziva za beton: razumijevanje mikrostrukture za predviđanje trajnosti (ABC) (Serdar, Marijana) ( CroRIS)
Ustanove:
Građevinski fakultet, Zagreb
Profili:
Marijana Serdar
(autor)
