Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 20 for “"cohesive soil"”.
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Effect of water temperature on cohesive soil erosion
… change, the<br />effect of water temperature on cohesive soil erosion should be explored. The objectives of this study are to: determine the effect of water temperature on the erosion rates of clay; determine how erosion rates vary with clay mineralogy; and, explore the relationship between zeta …
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Modelling including associated testing of cohesive soil using disturbed state concept
… and pore water pressure response of saturated cohesive soils subjected to cyclic loading is developed using the Disturbed State Concept (DSC) is presented in this dissertation. The model takes into account inelastic non-virgin behavior. Factors such as non-associativeness, induced anisotropy …
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Finite element analyses on cohesive soil behavior due to advanced shield tunneling
Soil tunnels are usually constructed using a shield with an open face. However, in the past decade, innovations in shield tunneling technology have brought closed-faced shields that provide continuous support to the face and permit tunneling through even the most difficult conditions of soft …
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Turbulent fluid jet excavation in cohesive soil : with particular application to jet grouting
… not take into account the jet hydrodynamics and soil properties explicitly. A rational model to describe the jet excavation mechanism for cohesive soil is presented in this thesis, with the aim of providing an improved prediction tool that can be used in jetting design. The model is based on the …
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The significance of specimen end restraint in high pressure triaxial testing of cohesive soil
… thesis investigates the mechanical behaviour of cohesive soil at relatively high stresses with a particular emphasis on the significance of specimen end restraint on the interpretation of triaxial test results. Undrained triaxial shear tests have been performed on specimens K0 consolidated to …
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An experimental investigation of the behavior of a model suction caisson in a cohesive soil
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1997.
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An experimental investigation into the stress-dependent mechanical behavior of cohesive soil with application to wellbore instability
… thesis investigates the mechanical behavior of cohesive soils with reference to the applications of wellbore instabilities through an extensive program of laboratory element and model borehole tests. The laboratory tests use Resedimented Boston Blue Clay (RBBC) as an analog test material. …
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The influence of effective consolidation stress on the normalized extension strength properties of resedimented Boston blue clay
… determine the undrained shear strength of cohesive soil is of particular importance to the practice of geotechnical engineering. Ladd & Foot (1974) presents a method to determine the undrained shear strength based on the concept of normalized soil parameters; called the SHANSEP (Stress …
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An Experimental Study on Soil Water Characteristics and Hydraulic Conductivity of Compacted Soils
The importance of applying unsaturated soil mechanics concepts to geotechnical engineering design has been widely recognized. Soil water characteristic curve (SWCC) and hydraulic conductivity function (HCF) are vital soil properties that govern engineering behavior of unsaturated soils. In this …
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Sedimentation and Consolidation of cohesive and non-cohesive soils formed under turbulent flows
… the settling, consolidation and erosion of mixed soil material (cohesive and non-cohesive). Soil beds formed by sedimentation process of loose particles will be either show a segregated or homogeneous in structure, depending on the depositional environment. These sediments initially undergo …
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Numerical modeling of constant rate of strain consolidation tests
… is an effective testing method to determine cohesive soil properties including stress history, compressibility, hydraulic conductivity and coefficient of consolidation. However, testing at varying strain rates have resulted in inconsistent results with respect to expected soil behavior. This …
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Characterization and Modeling of Deformable Soils for Tire Performance Simulations
The accurate prediction of tire-soil interaction plays a crucial role in the optimization and design of off-road machinery used for agricultural, defense, construction, and mining applications. The tire-road interaction studies focus solely on road roughness and friction between rubber and asphalt …
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Testing and constitutive modelling of saturated interfaces in dynamic soil-structure interaction.
… for the stress-strain-pore-pressure behavior of cohesive soil interfaces under dynamic loading is developed using the new unified disturbed state concept (DSC). The model is based on elasto-plasticity theory as defined by the hierarchical single surface (HISS) plasticity model. The proposed model …
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Experimental and theoretical investigation of constant rate of strain consolidation
… conductivity, and rate of consolidation) of a cohesive soil and possess many advantages over the incremental oedometer test. Ease of operation and the ability to take frequent readings provides tremendous labor savings and a better definition of the compression curve. However, the test has some …
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Influencia de la combinación de tensiones tangenciales estáticas y cíclicas en la evaluación de parámetros dinámicos de un suelo cohesivo
… related to the dynamic behavior of soils have been performed without applying different configurations of monotonic shear stress previously to the dynamic solicitation. Therefore the main objective of this research was to establish the influence of preexisting stress state on the …
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Análisis, modelización e implementación Numérica del comportamiento de suelos Blandos ante la combinación de tensiones Tangenciales estáticas y cíclicas
… related to the dynamic behavior of soils, for the study of the distribution of stress beneath the designed structures, have been performed without applying different configurations of monotonic shear stress previously to the dynamic solicitation. A complete experimental information …
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Evaluation of an In Situ Measurement Technique for Streambank Critical Shear Stress and Soil Erodibility
… streambank critical shear stress (Ï c) and soil erodibility (kd). Previous research showed streambank kd and Ï c can vary by up to four orders of magnitude at a single site; therefore, it is essential to determine if the large range is due to natural variability in soil properties or errors …
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Tire Performance Estimation Under Combined Slip and Empirical Parametrization of the Tire Rut on Dry Sand
… vehicles across different types of terrain like soil, mud, and snow. As the properties of the terrain heavily influence the interaction with the tire, it is necessary to characterize the terrain from a tire performance and vehicle mobility perspective. Failure to properly understand the …