Effect of varying surface ageing on frost-salt scaling

Hannele Kuosa, Markk Leivo, Erika Holt, R.M. Ferreira

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

2 Citations (Scopus)

Abstract

Surface scaling of bridge structures, caused by a moist and saline environment with frost attack, should be minimized to guarantee a long service life. For frost-salt scaling, near surface material properties are critical. Thus it is also essential to know how ageing resulting from carbonation, drying and hydration will change the durability performance of concrete. Laboratory studies on the effect of surface ageing on frost scaling were included in the Finnish DuraInt project (Effect of Interacted Deterioration Parameters on Service Life of Concrete Structures in Cold Environments, 2008 - 2011). The effect of five different ageing conditions on the freeze-thaw scaling performance of concrete was analysed, using natural or accelerated ageing methods. Concrete specimens were subject to one or two rounds of combined ageing - degradation mechanisms. The effect of binder type, w/b ratio, air content and air pore structure is discussed. The results showed that ageing with carbonation typically increased scaling. Binding material type and air entrainment quality were also decisive.
Original languageEnglish
Title of host publicationBridge Maintenance, Safety, Management, Resilience and Sustainability
Subtitle of host publicationProceedings of the Sixth International IABMAS Conference, Stresa, Lake Maggiore, Italy, 8-12 July 2012
EditorsFabio Biondini, Dan M. Frangopol
PublisherCRC Press
Pages974-981
ISBN (Print)978-0-415-62124-3
Publication statusPublished - 2012
MoE publication typeA4 Article in a conference publication
Event6th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2012 - Lake Maggiore, Stresa, Italy
Duration: 8 Jul 201212 Jul 2012

Conference

Conference6th International Conference on Bridge Maintenance, Safety and Management, IABMAS 2012
Abbreviated titleIABMAS 2012
CountryItaly
CityStresa
Period8/07/1212/07/12

Keywords

  • concrete
  • durability
  • ageing
  • frost attack
  • carbonation
  • drying

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  • Cite this

    Kuosa, H., Leivo, M., Holt, E., & Ferreira, R. M. (2012). Effect of varying surface ageing on frost-salt scaling. In F. Biondini, & D. M. Frangopol (Eds.), Bridge Maintenance, Safety, Management, Resilience and Sustainability: Proceedings of the Sixth International IABMAS Conference, Stresa, Lake Maggiore, Italy, 8-12 July 2012 (pp. 974-981). CRC Press.