...M. Talesnick; I. Omer; M. Ghafghazi Data from simple shear testing can be significantly enhanced through implementation of local, in-soil measurement of shear stress and shear strain. Use of such tools circumvents difficulties in dealing with data collected through measurements made at the specimen...

...) strain increments in deviatoric plane for a soil element during cavity expansion process, cylindrical case I: 2 ν > 1 − sin ϕ 2a s r = σ r ′ − p ′ = 2 3 q sin θ + 2 π 3 2b s θ = σ θ ′ − p...

... to the specimen simultaneously. Emphasis is placed on the effects of different combinations of horizontal and vertical stresses on the behaviour of strain, pore water pressure, mobilised friction and modulus. Test results indicated that cyclic behaviour strongly depended on the 3D stress conditions or stress...

...Jin-Jian Xu; Chao-Sheng Tang; Qing Cheng; Farshid Vahedifard; Bo Liu; Bin Shi Desiccation cracking can significantly affect the hydro-mechanical behaviour of soil in various engineering applications. Characterising the evolution of desiccation-induced shrinkage strain in soils is a key step...

... into the influence of R b % on the permanent strain rate ( ε ˙ p ) and the deformation mechanism under repeated loading is very limited. In the current study, the cyclic deformation response for waste mixtures of steel furnace slag (SFS), coal wash (CW) and rubber crumbs (RC) is analysed...

..., and highly deviatoric loading paths. The results indicate that the K₀ path shows the most uniform deformation mechanism, where the measured ratio of deviatoric and volumetric strain increments reach the stress ratio applied at boundary value level for large magnitudes of total strain...

... at key stages of the cavity inflation process. A closed-shaped failure region developed around the cavities, beyond which shear planes of elliptic paraboloid shape formed, extending from the bottom of the cavities all the way to the free surface. The plane-strain assumption did not hold beyond...

...-thickness localisation band. 3 t = t i = t o 4 σ = f σ i + 1 − f σ o 03 04 2020 12 11 2020 © 2021 Thomas Telford Ltd 2021 constitutive relations plasticity strain stress path Strain localisation is a common...

... by particle image velocimetry and data relating to displacements and strains are reported. A simplified deformation mechanism is proposed for sand behind a rigid wall rotating about the top and this is validated with the centrifuge test results. The paper reveals that the sand deformation caused by wall...

...Krepa Upreti; Eng-Choon Leong Determination of shear modulus and damping ratio from small to large strains is essential to understand the non-linear stress–strain and damping behaviour of sand. The shear modulus and damping ratio with shear strain relationships of sand are dependent on a number...

.... Various penetrometer test procedures were applied to measure the penetration resistances including monotonic, cyclic and twitch-type movements as well as pauses for pore pressure dissipation. These mobilised combinations of partial or full remoulding, strain softening, consolidation and viscous rate...

...Lu Zuo; Beatrice A. Baudet The existence and failures of silty sand have been reported worldwide, and the behaviour of sand–silt mixtures at small to large strains has been intensively studied. Owing to the relatively low stress level achieved in laboratory testing, no unifying framework has yet...

... on the surface of the specimen, the large accumulated movement during cyclic shearing significantly increased the potential for inducing vertical slippage. A comparison of local deformation among the different tests revealed that the threshold of shear strain to generate non-uniform local deformations decreased...

... and strains with different layer thicknesses to be quantified. It was observed that the critical failure mechanisms for thin and thick surficial layers are different, resulting in changes in the rates of surface rutting. Understanding these deformation mechanisms potentially allows savings to be made in road...

... image correlation (DIC) capability. Digital images of the model pile and sand were taken during loading of the pile in each test and processed using the DIC technique to obtain the soil displacement and strain fields. Results from local sensors showed that the ratio of the tensile-to-compressive shaft...

... loads, reconstituted, intact and recompacted specimens were tested. Thermal axial strains of these specimens in a normally consolidated state were measured using a temperature-controlled invar oedometer apparatus. The soil fabric of each specimen was evaluated using a scanning electron microscope (SEM...

...A. Lashkari; M. S. Yaghtin Flow liquefaction of sands is commonly studied by means of undrained tests. However, experimental findings indicate that seepage-induced change in pore-water pressure after earthquake cessation may lead to shear–volume coupled strain paths and, consequently, a remarkable...

... in current design procedures for these piles, which treat the pile only as an additional force or moment and simplify soil–pile interaction. Two-dimensional plane-strain finite-element analyses were performed to simulate the excavation of a slope in a stiff clay and the interaction of vertical piles within...

...A. M. Druckrey; K. A. Alshibli; R. I. Al-Raoush It is well known that the constitutive behaviour of granular materials is influenced by strain localisation into zones of intensive shearing, known as shear bands. The failure mode of specimens tested under axisymmetric triaxial compression...

.... Measurements in the tests included accelerations during free fall in water and embedment in soil, and pullout resistance as the DEPLA was loaded to failure and subsequently retrieved to the deck of the installation vessel. The acceleration data are used in the paper to explore the suitability of strain rate...