Investigation of the size effect and the fracture process on the uniaxial compressive strength of the banded Alfas porous stoneInvestigation of the size effect and the fracture process on the uniaxial compressive strength of the banded Alfas porous stone Πλήρης Δημοσίευση σε Συνέδριο Conference Full Paper 2022-06-172020enThis paper focuses on the experimental and numerical investigation of the size effect and the fracture process on the uniaxial compression strength (UCS) of the banded Alfas porous stone. This natural building material excavated in Rethimnon, Crete, Greece often features two material bands with similar mineralogical properties, but different depositional characteristics and therefore different mechanical parameters. The experimental tests were simulated numerically using the Bonded Particle Model (BPM) available in the PFC2D code. The noticeable unusual increase of UCS with increasing specimen diameter as well as the strong influence of the weaker band on the mechanical behavior of the banded Alfas porous stone are confirmed by the numerical results. Future work will focus on the direct measurement of the weak/strong material band properties and will investigate the effect of the loading rate and boundary conditions on the mechanical response of the BPMs.http://creativecommons.org/licenses/by-nc-nd/4.0/285-2921st Mediterranean Conference on Fracture and Structural IntegrityNomikos_et_al_MedFract1_26_2020.pdfChania [Greece]Library of TUC2022-06-17application/pdf1.4 MBfree Nomikos Pavlos Kaklis Konstantinos Κακλης Κωνσταντινος Agioutantis Zacharias Αγιουταντης Ζαχαριας Mavrigiannakis Stelios Μαυριγιαννακης Στελιος Elsevier Banded Alfas porous stone Building material Size effect PFC2D Uniaxial compression strength tests