Matches in SemOpenAlex for { <https://semopenalex.org/work/W4385320479> ?p ?o ?g. }
Showing items 1 to 50 of
50
with 100 items per page.
- W4385320479 abstract "The thesis presents numerical and experimental studies on joints.<br/>A formulation for the coupled analysis of thermo- hydro- mechanical problems in joints is presented. The work involves the establishment of equilibrium and mass and energy balance equations. Balance equations were formulated taking into account two phases: water and air. <br/><br/>Once the joint element was implemented in Code_Bright computer code, it was then used to study some cases. The numerical simulation of hydraulic shear tests of roughness granite joints is presented. This allowed evaluating the coupling between permeability and the geometry of the opening of the joint. Then, a thermo-hydro-mechanical simulation of a large-scale nuclear waste repository was performed considering the joint element to model the interface between canister and bentonite. This example allowed evaluating the behaviour of the joint element when coupled to continuum elements. Then, other examples show how hydro-mechanical coupling affects the permeability and saturation of the joints and adjacent material. Finally, the gas flow through joints was also investigated.<br/><br/>The experimental investigation focused on the effects of suction on the mechanical behaviour of rock joints. Laboratory tests were performed in a direct shear cell equipped with suction control. Suction was monitored using a vapour forced convection circuit controlled by an air pump that was connected to the shear cell. Once equilibrium conditions are achieved, the rock specimen is assumed to reach the Relative Humidity imposed by the flowing air at a given vapour concentration. Artificial joints of Lilla claystone were prepared. Joint roughness of varying intensity was created by carving the surfaces in contact in such a manner that rock ridges of different tip angles formed. These angles ranged from 0º (smooth joint) to 45º (very rough joint profile). The geometric profiles of the two surfaces in contact were initially positioned in a matching situation. Several tests were performed for different values of suction (200, 100 and 20 MPa) and for different values of vertical stress (30, 60 and 150 kPa).<br/>A constitutive model including the effects of suction and joint roughness is proposed to simulate the unsaturated behaviour of rock joints.<br/>The new constitutive law was incorporated in the code and experimental data were numerically simulated." @default.
- W4385320479 created "2023-07-28" @default.
- W4385320479 creator A5092555891 @default.
- W4385320479 date "2023-07-26" @default.
- W4385320479 modified "2023-10-16" @default.
- W4385320479 title "Thermo-hydro-mechanical analysis of joints a theoretical and experimental study" @default.
- W4385320479 doi "https://doi.org/10.5821/dissertation-2117-93586" @default.
- W4385320479 hasPublicationYear "2023" @default.
- W4385320479 type Work @default.
- W4385320479 citedByCount "0" @default.
- W4385320479 crossrefType "dissertation" @default.
- W4385320479 hasAuthorship W4385320479A5092555891 @default.
- W4385320479 hasBestOaLocation W43853204791 @default.
- W4385320479 hasConcept C121332964 @default.
- W4385320479 hasConcept C127413603 @default.
- W4385320479 hasConcept C131584629 @default.
- W4385320479 hasConcept C135628077 @default.
- W4385320479 hasConcept C18555067 @default.
- W4385320479 hasConcept C187320778 @default.
- W4385320479 hasConcept C192562407 @default.
- W4385320479 hasConcept C57879066 @default.
- W4385320479 hasConcept C66938386 @default.
- W4385320479 hasConcept C78519656 @default.
- W4385320479 hasConceptScore W4385320479C121332964 @default.
- W4385320479 hasConceptScore W4385320479C127413603 @default.
- W4385320479 hasConceptScore W4385320479C131584629 @default.
- W4385320479 hasConceptScore W4385320479C135628077 @default.
- W4385320479 hasConceptScore W4385320479C18555067 @default.
- W4385320479 hasConceptScore W4385320479C187320778 @default.
- W4385320479 hasConceptScore W4385320479C192562407 @default.
- W4385320479 hasConceptScore W4385320479C57879066 @default.
- W4385320479 hasConceptScore W4385320479C66938386 @default.
- W4385320479 hasConceptScore W4385320479C78519656 @default.
- W4385320479 hasLocation W43853204791 @default.
- W4385320479 hasLocation W43853204792 @default.
- W4385320479 hasOpenAccess W4385320479 @default.
- W4385320479 hasPrimaryLocation W43853204791 @default.
- W4385320479 hasRelatedWork W1928743270 @default.
- W4385320479 hasRelatedWork W2079596811 @default.
- W4385320479 hasRelatedWork W221807853 @default.
- W4385320479 hasRelatedWork W2350032752 @default.
- W4385320479 hasRelatedWork W2362478917 @default.
- W4385320479 hasRelatedWork W2366363060 @default.
- W4385320479 hasRelatedWork W2381670429 @default.
- W4385320479 hasRelatedWork W2669760163 @default.
- W4385320479 hasRelatedWork W2899084033 @default.
- W4385320479 hasRelatedWork W3095347327 @default.
- W4385320479 isParatext "false" @default.
- W4385320479 isRetracted "false" @default.
- W4385320479 workType "dissertation" @default.