ConferenceSpringer Series in Geomechanics and Geoengineering · January 1, 2023
This paper presents the desiccation failure process of geomaterials under controlled environmental conditions. The experiment material, granite powder silt, was tested in a controlled atmospheric chamber that ensures temperature consistency and provides hu ...
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ConferenceE3s Web of Conferences · November 18, 2020
Hydraulic fracturing has been widely used for unconventional reservoirs especially after the technique of horizontal drilling was invented. Acidizing treatment is often incorporated as a propagation enhancement of fractures, in particular, for very tight, ...
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ConferenceE3s Web of Conferences · November 18, 2020
Because of common exposure to high temperatures and forced ventilation of geomaterials in energy production and storage, their failure mode often involves intense drying and constrained shrinkage associated cracking. Previous experiments show that drying c ...
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ConferenceEngineering in Chalk Proceedings of the Chalk 2018 Conference · January 1, 2018
Chalks are highly porous rocks formed of mainly carbonate grains bonded together by calcite bridges. From a microstructural point of view they are very similar to calcarenites. The above characteristics make them prone to water induced weathering, frequent ...
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ConferenceSpringer Series in Geomechanics and Geoengineering · January 1, 2017
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 coll ...
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ConferenceGeotechnical Special Publication · January 1, 2016
Chemo-mechanical couplings in geomaterials have received increasing attention in recent years for a number of applications, ranging from the stability of slopes and coastal structures to geological CO2 sequestration. Chemical processes may resul ...
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ConferenceProcedia Engineering · January 1, 2016
Sensitivity of the mechanical properties of geomaterials to chemical processes is known to bring about either strengthening or weakening effects, the latter being critical for safety assessment in a number of civil and energy engineering applications. In t ...
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ConferenceEnergy Geotechnics Proceedings of the 1st International Conference on Energy Geotechnics Icegt 2016 · January 1, 2016
Geo-chemistry and geo-mechanics have had a fruitful period of independent development over last 50 years, and are now conceptually matured having produced useful and sophisticated modeling tools used in the energy industry. As the understanding of the proc ...
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ConferenceGeomechanics from Micro to Macro Proceedings of the Tc105 Issmge International Symposium on Geomechanics from Micro to Macro is Cambridge 2014 · January 1, 2015
Soft and highly porous rocks such as calcarenites are very common in the entire Mediterranean region. Due to their porous calcareous structure these rocks are quite prone to water induced weathering mechanisms. Cliffs and underground cavities formed of cal ...
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ConferenceBio and Chemo Mechanical Processes in Geotechnical Engineering Geotechnique Symposium in Print 2013 · January 1, 2013
Long portions of the Apulian coast are steep cliffs in carbonate soft rocks. These, especially the calcarenite, are affected by weathering processes that markedly alter their mechanical properties with time, potentially leading to instability of coastal ge ...
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ConferenceBio and Chemo Mechanical Processes in Geotechnical Engineering Geotechnique Symposium in Print 2013 · January 1, 2013
Crack propagation is studied in a geomaterial subject to weakening by the presence of water, which dissolves a mineral component. Such weakening is common when tensile microcracks develop, constituting sites of enhanced mineral dissolution. A previous conc ...
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ConferenceBio and Chemo Mechanical Processes in Geotechnical Engineering Geotechnique Symposium in Print 2013 · January 1, 2013
Laboratory tests on the micro scale are reported in which two amorphous silica cubes were compressed in a liquid environment, in solutions with different silica ion concentrations, for up to 3 weeks. Such an arrangement represents an idealised representati ...
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ConferenceComputational Geomechanics Comgeo III Proceedings of the 3nd International Symposium on Computational Geomechanics · January 1, 2013
A multi-scale, multi-physics sequence of processes is discussed as developing during drying of non-clayey soils. Two variables are believed to be central in drying: suction resulting from the evaporation and effective stress associated with external constr ...
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ConferenceNumerical Models in Geomechanics 9th Proceedings of the International Symposium on Numerical Models in Geomechanics NUMOG 2004 · January 1, 2004
Many processes in geomechanics, such as structuration and aging of natural soils, compaction and pressure solution of oil bearing sediments involve mineral dissolution at grain contacts. Dissolution and subsequent precipitation lead to a redistribution of ...
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