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 language | English |
|---|---|
| Title of host publication | Alkali Aggregate Reactions (AAR) in concrete |
| Subtitle of host publication | Workshop Proceedings from a Nordic-Baltic Miniseminar |
| Editors | Børge J. Wigum, Dirch H. Bager |
| Publisher | The Nordic Concrete Federation (NCF) |
| Pages | 1-15 |
| Publication status | Published - 2013 |
| MoE publication type | D3 Professional conference proceedings |
| Event | Nordic - Baltic Miniseminar Alkali Aggregate Reactions (AAR) in Concrete - Riga, Latvia Duration: 21 Nov 2013 → 22 Nov 2013 |
Conference
| Conference | Nordic - Baltic Miniseminar Alkali Aggregate Reactions (AAR) in Concrete |
|---|---|
| Country/Territory | Latvia |
| City | Riga |
| Period | 21/11/13 → 22/11/13 |
Keywords
- concrete
- durability
- degradation
- ASR
- AAR
- alkali aggregate reactions
- aggregate
- service life