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.
CITATION STYLE
Hueckel, T., Ciantia, M., Mielniczuk, B., El Youssouffi, M. S., & Hu, L. B. (2017). Modeling physico-chemical degradation of mechanical properties to assess resilience of geomaterials. In Springer Series in Geomechanics and Geoengineering (Vol. 0, pp. 65–79). Springer Verlag. https://doi.org/10.1007/978-3-319-56397-8_9
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