TY - GEN
T1 - Modeling physico-chemical degradation of mechanical properties to assess resilience of geomaterials
AU - Hueckel, T.
AU - Ciantia, M.
AU - Mielniczuk, B.
AU - El Youssouffi, M. S.
AU - Hu, L. B.
PY - 2017
Y1 - 2017
N2 - It is widely accepted that critical properties of geo-materials that play a key role in failure of earth-structures undergo often a substantial evolution induced by non-mechanical processes and variables. That includes: hydro-thermal fracture, thermal collapse, chemical mass removal or accretion (dissolution or precipitation), chemical shrinkage/swelling, drying shrinkage, capillary force evolution during pore water phase change. The properties affected are: strength in all its manifestation, compressibility, permeability, thermal conductivity, to mention just a few. The physical processes involved are either natural or engineered. Their phenomenology is per se a conundrum, as often they constitute a series of parallel or sequential processes. A review of several phenomena leading to geomaterial degradation, and methodology is presented to deal with multi-physical couplings in constitutive modeling. In plasticity, the central constitutive function is a hardening rule. Also in this case, phenomenological observations indicate a chemo-mechanical, two-way coupling. Other degradation phenomena discussed include drying—cracking, and or the role of suction induced hardening in unsaturated materials.
AB - It is widely accepted that critical properties of geo-materials that play a key role in failure of earth-structures undergo often a substantial evolution induced by non-mechanical processes and variables. That includes: hydro-thermal fracture, thermal collapse, chemical mass removal or accretion (dissolution or precipitation), chemical shrinkage/swelling, drying shrinkage, capillary force evolution during pore water phase change. The properties affected are: strength in all its manifestation, compressibility, permeability, thermal conductivity, to mention just a few. The physical processes involved are either natural or engineered. Their phenomenology is per se a conundrum, as often they constitute a series of parallel or sequential processes. A review of several phenomena leading to geomaterial degradation, and methodology is presented to deal with multi-physical couplings in constitutive modeling. In plasticity, the central constitutive function is a hardening rule. Also in this case, phenomenological observations indicate a chemo-mechanical, two-way coupling. Other degradation phenomena discussed include drying—cracking, and or the role of suction induced hardening in unsaturated materials.
KW - Methane Hydrate
KW - Nuclear Waste Disposal
KW - Landfill Liner
KW - Resilience Assessment
KW - Pore Throat Radius
U2 - 10.1007/978-3-319-56397-8_9
DO - 10.1007/978-3-319-56397-8_9
M3 - Conference contribution
AN - SCOPUS:85032356165
SN - 9783319563961
T3 - Springer Series in Geomechanics and Geoengineering
SP - 65
EP - 79
BT - Bifurcation and Degradation of Geomaterials with Engineering Applications
A2 - Papamichos, Euripides
A2 - Papanastasiou, Panos
A2 - Pasternak, Elena
A2 - Dyskin, Arcady
PB - Springer
CY - Switzerland
T2 - 11th International Workshop on Bifurcation and Degradation in Geomaterials
Y2 - 21 May 2017 through 25 May 2017
ER -