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Role of porosity in controlling the mechanical and impact behaviours of cement-based materials

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dc.affiliation.dptoUC3M. Departamento de Mecánica de Medios Continuos y Teoría de Estructurases
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Dinámica y Fractura de Elementos Estructuraleses
dc.contributor.authorForquin, P.
dc.contributor.authorArias Hernández, Ángel
dc.contributor.authorZaera, Ramón
dc.date.accessioned2010-03-12T11:47:04Z
dc.date.available2010-03-12T11:47:04Z
dc.date.issued2008-03
dc.description14 pages, 12 figures.
dc.description.abstractThis work deals with the influence of porosity on the tensile, the compressive and the impact behaviours of two fine cementitious mortars—one with silica fume and one without. The addition of silica fume is shown to change the pore size distribution. The mix without silica fume is characterized by porosity at the scale of the grains of fine sand (approximately 100 μm), while silica fume addition results in a more porous matrix with pore sizes of millimetre-length size. The mortar with silica fume shows a higher quasi-static compressive and flexural strength whereas the mix without silica fume is observed to be less compressible (by irreversible reduction of volume) under heavy confinement pressure (quasi-oedometric tests) and shows better ballistic performance. A numerical simulation of the impact tests employing the Krieg, Swenson and Taylor model, which accounts for both deviatoric and volumetric inelastic behaviour of the material, was undertaken using the data from quasi-oedometric tests. These calculations follow the experimental results and confirm the influence of the macroscopic porosity on the impact performance of cement-based materials.
dc.description.sponsorshipThe authors are indebted to the Spanish Comisión Interministerial de Ciencia y Tecnología (Project MAT2002-03339) for the financial support of this work and to the Délégation Générale pour l’Armement (DGA/France) for the mobility grant provided to Dr. Forquin.
dc.format.mimetypeapplication/pdf
dc.identifier.bibliographicCitationInternational Journal of Impact Engineering, 2008, vol. 35, n. 3, p. 133-146
dc.identifier.doi10.1016/j.ijimpeng.2007.01.002
dc.identifier.issn0734-743X
dc.identifier.urihttps://hdl.handle.net/10016/7302
dc.language.isoeng
dc.publisherElsevier
dc.relation.projectIDGobierno de España. MAT2002-03339
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.ijimpeng.2007.01.002
dc.rights© Elsevier
dc.rights.accessRightsopen access
dc.subject.ecienciaIngeniería Mecánica
dc.subject.ecienciaIngeniería Industrial
dc.subject.otherMortar
dc.subject.otherPorosity
dc.subject.otherConfined compression
dc.subject.otherImpact behaviour
dc.subject.otherSarcophagus configuration
dc.titleRole of porosity in controlling the mechanical and impact behaviours of cement-based materials
dc.typeresearch article*
dspace.entity.typePublication
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