@ARTICLE{Dańko_R._Determination_2016, author={Dańko, R. and Dańko, J.}, number={No 4}, journal={Archives of Foundry Engineering}, howpublished={online}, year={2016}, publisher={The Katowice Branch of the Polish Academy of Sciences}, abstract={The aim of the hereby paper is to present the developed model of determining the volume and surface porosity based on the main fraction of polifractional materials, its experimental verification and utilisation for the interpretation of effects accompanying the formation of a moulding sand apparent density, porosity and permeability in the blowing processes of the core and moulds technology.}, type={Artykuły / Articles}, title={Determination of the Surface and Volume Porosity, on the Basis of the Main Fraction of the Polifractional Matrix of Moulding and Core Sands}, URL={http://journals.pan.pl/Content/101952/PDF/afe-2016-0108.pdf}, doi={10.1515/afe-2016-0108}, keywords={porosity, Sand grains, Moulding sand}, }