TY - CPAPER T1 - Crystallisation Preferred Orientation in Porous Media T2 - SHIRMS 2008: First Southern Hemisphere International Rock Mechanics Symposium AU - Lecampion, B ED - Potvin, Y A2 - Potvin, Y ED - Carter, J A2 - Carter, J ED - Dyskin, A A2 - Dyskin, A ED - Jeffrey, R A2 - Jeffrey, R DA - 2008/09/16 PY - 2008 PB - Australian Centre for Geomechanics PP - Perth CY - Perth C1 - Perth SP - 587 EP - 600 AB - The effects of non-hydrostatic stresses on the poro-mechanics of in-pore crystallisation are investigated. The consequences of the hypothesis of a purely hydrostatic state of stress in the crystals on their shape and orientation are derived from a diluted problem following Eshelby’s (1957) solution of an inhomogeneous inclusion in an infinite matrix. These results are used in a micro-mechanical scheme to estimate the macroscopic constitutive parameters. The preferred orientation and shape of the crystal, with respect to the stress field, induce a non-linear anisotropic dependence of the macroscopic constitutive parameters of the porous medium upon the stress state. The importance of such an induced anisotropy is explored for a given material as well as the effect of different boundary conditions on a unit volume of material undergoing crystal growth. UR - https://papers.acg.uwa.edu.au/p/808_96_Lecampion/ ER - DO - 10.36487/ACG_repo/808_96