Finland's entrance to the ASR deterioration club

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsProfessional

Abstract

Alkali-aggregate reaction (ASR) in concrete is one of the least dealt with concrete degradation mechanism in Finland. It is a common belief that it does not occur due to the exceptional quality of Finland's granitic rock. However, over 50 cases have been identified in the past 15 years in concrete structures, raising uncertainty in this claim and concern about the occurrence and extent of ASR in Finland. The amount of ASR is expected to increase rapidly as a result of geological constraints, and the inadequate or insufficient national regulatory norms on the topic. Actions now need to be taken otherwise the risks of future cases may be growing significantly. There is also concern over the interaction of damages cause by freeze-thaw and ASR, due to possible synergetic effects. This paper presents the current situation in Finland with regards to ASR and outlines the strategy to proactively address the problem.
Original languageEnglish
Title of host publicationWorkshop Proceedings from a Nordic-Baltic Miniseminar
Subtitle of host publicationAlkali Aggregate Reactions (AAR) in concrete
EditorsBørge J. Wigum, Dirch H. Bager
Pages1-15
Publication statusPublished - 2013
MoE publication typeNot Eligible
EventNordic - Baltic Miniseminar Alkali Aggregate Reactions (AAR) in Concrete - Riga, Latvia
Duration: 21 Nov 201322 Nov 2013

Conference

ConferenceNordic - Baltic Miniseminar Alkali Aggregate Reactions (AAR) in Concrete
CountryLatvia
CityRiga
Period21/11/1322/11/13

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Keywords

  • concrete
  • durability
  • degradation
  • ASR
  • AAR
  • alkali aggregate reactions
  • aggregate
  • service life

Cite this

Holt, E., & Ferreira, M. (2013). Finland's entrance to the ASR deterioration club. In B. J. Wigum, & D. H. Bager (Eds.), Workshop Proceedings from a Nordic-Baltic Miniseminar: Alkali Aggregate Reactions (AAR) in concrete (pp. 1-15)