...Dakuo Feng; Jianmin Zhang Non-coaxiality is one of the key characteristics of soil–structure interfaces that broadly occur in geotechnical engineering. A series of interface tests between gravel and a structure was performed to address and model the non-coaxiality behaviours of interfaces subjected...

... fibres to the ballast. Fibres formed from polymer materials, randomly mixed with sands and gravels, have been shown to increase their shear resistance owing to the additional effective confinement associated with the mobilisation of tension in the fibres. However, the effect of the fibres...

... – Young's modulus and cohesion decreased with the increase of C_u. 25 02 2018 21 02 2019 © 2019 Thomas Telford Ltd 2019 deformation fabric/structure of soils gravels laboratory tests particle-scale behaviour shear strength In France, 94% of the total...

..., which was compared with that obtained from the static load test. Both methods provide good estimates for the unit shaft resistance in sandy layers with low gravel content (<20%), but significantly overestimate the unit shaft resistance mobilised in soil with high gravel content (>30...

..., the uniformity of tested specimens with respect to the PSD could be examined to establish and ensure acceptable repeatability (Indraratna et al., 2015 ; Israr et al., 2016a). 28 08 2016 24 05 2017 © 2017 Thomas Telford Ltd 2017 compaction erosion filters gravels...

... and permeability control, can potentially be used for internal erosion control. This paper examines the applicability of MICP for internal erosion control in gravel–sand mixtures using a large one-dimensional column test apparatus which incorporates the implementation of MICP. Visual observations, erosion...

... the effect of fibre tension on the effective stresses experienced by the granular skeleton provides new insights into the mechanisms of reinforcement in larger sized granular materials. 22 01 2016 27 05 2016 © 2016 Thomas Telford Ltd 2016 deformation fabric/structure of soils gravels...

... Thomas Telford Ltd 2016 creep gravels laboratory tests numerical modelling stiffness time dependence Strength and deformation characteristics of gravelly soils have been studied for about half a century in order to investigate their use in large-scale structures such as rockfill dams...

... of the fabrication of surrogate materials by 3D printing are discussed, for use as standardised, printable geomaterials in future up-scaled geotechnical experiments and other geomechanical research. © 2015 Thomas Telford Ltd 2015 gravels laboratory tests model tests particle-scale behaviour sands...

.... Contact stiffness and friction were determined by experiments. A large diameter oedometer test on hard limestone gravel was successfully simulated. The simulation included the prediction of the compression response and the evolution of grain size distribution. Rock toughness and basic friction angle were...

...) are area sphericity © 2015 Thomas Telford Ltd 2015 geology gravels particle-scale behaviour sands soil classification Soil particle shape is defined by international standards (ISO, 2008) as ‘the envelope formed by all the points on the surface of the particle’. Using two-dimensional...

..., NSW, Australia. † Centre for Geomechanics and Railway Engineering; ARC Centre of Excellence for Geotechnical Science and Engineering; University of Wollongong, Wollongong, NSW, Australia. 3 5 2014 12 8 2014 © 2014 Thomas Telford Ltd 2014 deformation failure gravels...

... with the original particle size distribution to evaluate the extent of breakage. © 2014 Thomas Telford Ltd 2014 clays deformation gravels laboratory tests Figure 3 (a) illustrates the variation in axial strain of fouled ballast (VCI up to 80%) compared to clean ballast (VCI = 0...

... and Railway Engineering, University of Wollongong, Centre of Excellence for Geotechnical Science and Engineering, Australia. 7 7 2011 17 5 2012 © 2013 Thomas Telford Ltd 2013 clays deformation gravels laboratory tests particle crushing/crushability shear strength Railways...

... la rupture, établit les rapports notoires existant entre les propriétés mécaniques et hydrauliques, et démontre un accord prometteur avec les expériences. gravels partial saturation particle crushing/crushability theoretical analysis The marked dependence of the mechanical response...

... and the complexity of typical loading conditions. The present research aims to fill this gap by means of a detailed experimental investigation and a theoretical analysis on the stress–strain response of dense gravels under monotonic and cyclic loading. The experimental campaign consists of a large number of triaxial...

... rugosité de la structure, le comportement du sol, et la contrainte normale présentent des effets significatifs sur le comportement de dilatance de l'interface. constitutive relations gravels laboratory tests shear strength soil/structure interaction Fig. 2. Monotonic stress...

... C_u de 20 maximum. filters gravels laboratory tests permeability sands seepage Steady-state seepage hydraulics through porous media is governed by the three-dimensional equations of continuity and Navier–Stokes. Using the Hagen–Poiseuelle solution of the general equation...

.... Le module réversible augmente proportionnellement au BBI, indépendamment de la pression de confinement effective. En outre, on propose un simple rapport hyperbolique du module réversible (M_{R) sur la contrainte totale (φ), pour le ballast en latite. deformation gravels}...

... forme et sur la base des résultats produits par des mesures orthogonales effectuées au moyen d'images statiques. gravels laboratory tests sands soil classification It has long been understood that particle size and shape have an important influence on the mechanical behaviour...