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dc.contributor.authorPedersen, Bård
dc.contributor.authorRodum, Eva
dc.contributor.authorHaugen, Marit Kristin
dc.contributor.authorLindgård, Jan
dc.date.accessioned2021-04-07T09:19:37Z
dc.date.available2021-04-07T09:19:37Z
dc.date.created2021-04-06T10:37:49Z
dc.date.issued2021
dc.identifier.issn0870-984X
dc.identifier.urihttps://hdl.handle.net/11250/2736551
dc.description.abstractIn 1999, the Maridal concrete culvert was built in Oslo, Norway. Natural aggregates known to be moderately alkali reactive according to laboratory and field experience were used. Field survey combined with microstructural analyses of drilled cores have confirmed that the use of OPC with relatively low alkali content (0.53 % Na2O eq.) combined with addition of 5% silica fume have prevented development of ASR. By corresponding field survey and microstructural analyses, it has also been verified that a similar aggregate combination has caused ASR in the nearby Storo bridge which was built in 1994. 18 years of service is too short time to conclude whether the concrete composition used in the Maridal culvert has a potential to develop ASR or not. To assess the long-term potential of ASR, residual expansion testing was performed. The conclusion from this testing is that the potential for further reaction and expansion is limited.en_US
dc.language.isoengen_US
dc.subjectAlkali contenten_US
dc.subjectCold water extractionen_US
dc.subjectPreventive measuresen_US
dc.subjectResidual expansionen_US
dc.titlePrevention of ASR by use of low alkali OPC and silica fume. Field and lab studies from the Maridal culvert and the Storo bridge in Oslo, incl. assessment of residual expansionen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.subject.nsiVDP::Teknologi: 500en_US
dc.source.pagenumber7-14en_US
dc.source.journalRevista Portuguesa de Engenharia de Estruturasen_US
dc.source.issue15en_US
dc.identifier.cristin1902268
dc.relation.projectNorges forskningsråd: 236661en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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