Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/118973
Citations
Scopus Web of Science® Altmetric
?
?
Full metadata record
DC FieldValueLanguage
dc.contributor.authorNguyen, T.en
dc.contributor.authorBui, H.en
dc.contributor.authorNgo, T.en
dc.contributor.authorNguyen, G.en
dc.contributor.authorKreher, M.en
dc.contributor.authorDarve, F.en
dc.date.issued2019en
dc.identifier.citationEngineering Fracture Mechanics, 2019; 209:228-244en
dc.identifier.issn0013-7944en
dc.identifier.issn1873-7315en
dc.identifier.urihttp://hdl.handle.net/2440/118973-
dc.description.abstractThis study investigates the influences of pore-structure and mortar properties on the fracture behaviour of geopolymer foamed concrete. The discrete element method (DEM) is utilised to explicitly describe the internal pore-structure, while the mortar phase is modelled at the micro/meso-scale using a cohesive-frictional model. Numerical tests are conducted on numerous DEM foam concrete specimens with various porosities and pore-size distributions. The numerical results show that the pore-size can have a profound effect on the material’s fracture resistance. A decrease in pore size results in higher compressive strength and this influence is more significant for foam concrete with lower porosity. However, the elastic modulus seems to be less sensitive to the pore size variation. Further looking at the fracture process of the foam concrete at the micro-scale shows a gradual transition contact bonds from compressive to tensile modes, which is triggered by the breakage of contact bonds persisting as the loading continues. The study also demonstrates that the pore size distribution mainly affects the empirical power exponent of Balshin’s equation of compressive strength-porosity relationship, while the mortar properties have a profound influence on the strength of the material at zero porosity.en
dc.description.statementofresponsibilityThang T. Nguyen, Ha H. Bui, Tuan D. Ngo, Giang D. Nguyen, Markus U. Kreher, Felix Darveen
dc.language.isoenen
dc.publisherElsevieren
dc.rights© 2019 Elsevier Ltd. All rights reserved.en
dc.subjectFoam concrete Micromechanical investigation; Pore-size effect; Porosity; DEMen
dc.titleA micromechanical investigation for the effects of pore size and its distribution on geopolymer foam concrete under uniaxial compressionen
dc.typeJournal articleen
dc.identifier.doi10.1016/j.engfracmech.2019.01.033en
dc.relation.granthttp://purl.org/au-research/grants/arc/LP130100884en
dc.relation.granthttp://purl.org/au-research/grants/arc/DP160100775en
dc.relation.granthttp://purl.org/au-research/grants/arc/DP170103793en
dc.relation.granthttp://purl.org/au-research/grants/arc/FT140100408en
pubs.publication-statusPublisheden
Appears in Collections:Aurora harvest 8
Civil and Environmental Engineering publications

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.