1156 KB49 KB200020242015Le, Nighi L. B.Li, KaiStroeven, Pietštevilka:2letnik:34str. 73-86ISSN:1580-3139COBISSID:32511193URN:URN:NBN:SI:doc-Y8ZC1SEPenDruštvo za stereologijo in kvantitativno analizo slike, Medicinska fakultetaImage analysis and stereologycementni izdelkiDEMkompozitipermeabilitypermeabilnostporosimetryporoznostvirtualni modeliwater saturationMethodology for porosimetry in virtual cementitious composites to economically and reliably estimate permeability|A novel methodology is described for porosimetry as well as for water transport through the pore system in dynamic DEM-based virtual cementitious materials. The pore network topology, the pore size distribution and the pore connectivity are assessed on the basis of a robotics-inspired pore delineation method and star volume measurements. Permeability estimates are based on a tube network model that incorporates these parameters and a shape factor. Since concrete contains in practical situations a variable amount of water, permeability estimation is presented as a function of the state of saturation. Satisfactory agreement is found with experimental data, validating the methodology. Earlier, the various "building blocks" were separately validatedTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaDruštvo za stereologijo in kvantitativno analizo slike