Wave velocity measurements in three directions on axially loaded water-saturated granite and gneiss core specimens

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorJacobsson, Larsen_US
dc.contributor.authorKjell, Gunnaren_US
dc.contributor.authorKiuru, Ristoen_US
dc.contributor.authorSuikkanen, Johannesen_US
dc.contributor.departmentRISE Research Institutes of Swedenen_US
dc.contributor.departmentDepartment of Civil Engineeringen_US
dc.contributor.departmentPosiva Oyen_US
dc.contributor.editorda Fontoura, Sergio A. B.en_US
dc.contributor.editorRocca, Ricardo Joséen_US
dc.contributor.editorPavón Mendoza, José Félixen_US
dc.date.accessioned2020-06-01T06:54:49Z
dc.date.available2020-06-01T06:54:49Z
dc.date.embargoinfo:eu-repo/date/embargoEnd/2020-09-03en_US
dc.date.issued2019-09-03en_US
dc.description.abstractThe density, porosity and mechanical properties from uniaxial compression and Brazilian tests along with measurements of the P- and S-wave velocities in axial and two lateral directions at unloaded state and at increasing axial load were conducted on cylindrical cores of veined gneiss and granitic pegmatoid. The specimens were sampled close to a tunnel wall (0.1– 1.7 m depth) with the aim to find if there is an increasing amount of microcracks due to the excavation in a zone near the surface. Evidence of microcracks was found via the mechanical tests and the wave velocity measurements, due to increased mechanical stiffness and increasing wave velocities at loading. Anisotropy in in the gneiss specimens and also in the granitic pegmatoid was detected and measured via strain and wave velocity measurements. No clear evidence was found of increased amount of microcracks closer to the tunnel wall.en
dc.description.versionPeer revieweden
dc.format.extent8
dc.format.extent1638-1645
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationJacobsson , L , Kjell , G , Kiuru , R & Suikkanen , J 2019 , Wave velocity measurements in three directions on axially loaded water-saturated granite and gneiss core specimens . in S A B da Fontoura , R J Rocca & J F Pavón Mendoza (eds) , Rock Mechanics for Natural Resources and Infrastructure Development - full papers : Proceedings of the 14th International Congress on Rock Mechanics and Rock Engineering (ISRM 2019), September 13-18, 2019, Foz do Iguassu, Brazil . Proceedings in Earth and geosciences series , vol. 6 , CRC Press , pp. 1638-1645 , ISRM International Congress on Rock Mechanics and Rock Engineering , Iguassu Falls , Brazil , 13/09/2019 .en
dc.identifier.isbn978-0-367-42284-4
dc.identifier.isbn978-0-367-82317-7
dc.identifier.issn2639-7749
dc.identifier.issn2639-7757
dc.identifier.otherPURE UUID: b50bec09-191e-4861-88cb-636fa3a108dcen_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/b50bec09-191e-4861-88cb-636fa3a108dcen_US
dc.identifier.otherPURE LINK: https://doi.org/10.1201/9780367823177en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85084685621&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/43198376/ENG_Jacobsson_et_al_Wave_velocity_measurements_isrm2019.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/44538
dc.identifier.urnURN:NBN:fi:aalto-202006013511
dc.language.isoenen
dc.relation.ispartofISRM International Congress on Rock Mechanics and Rock Engineeringen
dc.relation.ispartofseriesRock Mechanics for Natural Resources and Infrastructure Development - full papersen
dc.relation.ispartofseriesProceedings in Earth and geosciences seriesen
dc.relation.ispartofseriesVolume 6en
dc.rightsopenAccessen
dc.titleWave velocity measurements in three directions on axially loaded water-saturated granite and gneiss core specimensen
dc.typeConference article in proceedingsfi
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