Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Thermo-Mechanical Behavior of Saturated Clays Using Discrete Element Modelling
A discrete numerical model developed for cohesive soils was utilized to study the thermo-mechanical behavior of a saturated kaolinite. The physico-chemical interactions that exist between clay particles, mainly van der Waal attractive and double layer repulsive forces, were considered. Van der Waal attractive interaction was modelled based on the hybrid Hamaker-de Boer-Lifshitz approach. Further, double layer repulsive interaction was modelled based on the Gouy-Chapman theory. A brief discerption of the implementation in a discrete element framework is presented. Moreover, the effect of temperature variation on the inter-particle forces, mainly the double layer repulsive force, is discussed. Finally, the thermally-induced pore water pressure generated during undrained heating of a clay sample was studied and validated against experimental data. The findings suggest that incorporating temperature-dependent interparticle forces in DEM simulations of cohesive soils will allow understanding the underlying thermally-induced micro-structural changes providing another insights and explanations into the observed large-scale behaviors.
Thermo-Mechanical Behavior of Saturated Clays Using Discrete Element Modelling
A discrete numerical model developed for cohesive soils was utilized to study the thermo-mechanical behavior of a saturated kaolinite. The physico-chemical interactions that exist between clay particles, mainly van der Waal attractive and double layer repulsive forces, were considered. Van der Waal attractive interaction was modelled based on the hybrid Hamaker-de Boer-Lifshitz approach. Further, double layer repulsive interaction was modelled based on the Gouy-Chapman theory. A brief discerption of the implementation in a discrete element framework is presented. Moreover, the effect of temperature variation on the inter-particle forces, mainly the double layer repulsive force, is discussed. Finally, the thermally-induced pore water pressure generated during undrained heating of a clay sample was studied and validated against experimental data. The findings suggest that incorporating temperature-dependent interparticle forces in DEM simulations of cohesive soils will allow understanding the underlying thermally-induced micro-structural changes providing another insights and explanations into the observed large-scale behaviors.
Thermo-Mechanical Behavior of Saturated Clays Using Discrete Element Modelling
Jaradat, Karam A. (Autor:in) / Abdelaziz, Sherif L. (Autor:in)
Eighth International Conference on Case Histories in Geotechnical Engineering ; 2019 ; Philadelphia, Pennsylvania
Geo-Congress 2019 ; 125-134
21.03.2019
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Thermo-Mechanical Behavior of Saturated Clays Using Discrete Element Modelling
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