Please use this identifier to cite or link to this item: http://repositorio.lnec.pt:8080/jspui/handle/123456789/1009661
Full metadata record
DC FieldValueLanguage
dc.contributor.authorSantos Silva, A.pt_BR
dc.contributor.authorFernandes, I.pt_BR
dc.contributor.authorSoares, D.pt_BR
dc.contributor.authorCustódio, J.pt_BR
dc.contributor.authorRibeiro, A. C.pt_BR
dc.contributor.authorRamos, V.pt_BR
dc.contributor.authorMedeiros, S.pt_BR
dc.date.accessioned2017-07-18T13:53:47Zpt_BR
dc.date.accessioned2017-08-08T14:27:16Z-
dc.date.available2017-07-18T13:53:47Zpt_BR
dc.date.available2017-08-08T14:27:16Z-
dc.date.issued2016-07pt_BR
dc.identifier.urihttp://repositorio.lnec.pt:8080/jspui/handle/123456789/1009661-
dc.description.abstractAlthough considerable efforts have been made worldwide regarding alkali-silica reaction (ASR) prevention and mitigation, including the approval of new national and international regulations, several concrete structures are still being diagnosed with ASR. In Portugal, the new cases of ASR pertain to concrete produced mainly with igneous aggregates, whose potential reactivity is difficult to assess, notably on granitic and basaltic rocks. The most effective way to prevent ASR is an adequate knowledge of the alkali reactivity of the aggregate, which requires the application of appropriate tests and criteria to enable a correct classification. In the last 4 years a research program conducted in Portugal has evaluated more than 90 aggregates of different mineralogy and/or texture. The test campaign included petrography, ASTM C1260, RILEM AAR-3 and RILEM AAR-4.1 test methods. In this paper the results of ASR reactivity evaluation obtained in a group of granitic and basaltic aggregates are presented and discussed. From the results obtained, proposals to improve the reliability of existing test-methods are presented.pt_BR
dc.language.isoengpt_BR
dc.publisherIBRACONpt_BR
dc.rightsrestrictedAccesspt_BR
dc.subjectASRpt_BR
dc.subjectAggregatespt_BR
dc.subjectReactivitypt_BR
dc.subjectTest-methodspt_BR
dc.subjectGranitespt_BR
dc.titlePortuguese experience in ASR aggregate assessmentpt_BR
dc.typeworkingPaperpt_BR
dc.description.pages10ppt_BR
dc.identifier.localS. Paulo - Brazilpt_BR
dc.description.sectorDM/NMMpt_BR
dc.identifier.proc0204/112/19701pt_BR
dc.identifier.proc0204/114/17905pt_BR
dc.identifier.conftitle15th International Conference on Alkali-Aggregate Reaction in Concretept_BR
dc.contributor.peer-reviewedSIMpt_BR
dc.contributor.academicresearchersSIMpt_BR
dc.contributor.arquivoNAOpt_BR
Appears in Collections:DM/NMM - Comunicações a congressos e artigos de revista

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.