Showing papers in "Geotextiles and Geomembranes in 2015"

TL;DR: In this paper, the effect of binder and fiber quantity on the mechanical behaviour of Baixo Mondego soft soil, chemically stabilised with binders and reinforced/non-reinforced with short polypropylene fibres, was investigated.

TL;DR: In this paper, a laboratory evaluation on the strength behavior of cement-clay admixture improved by polypropylene fiber is presented, and the results show that fiber additive can significantly improve the strength and ductility of the cement treated Shanghai clay.

TL;DR: In this article, the authors presented a more realistic modeling approach to model geocells in 3D framework using the finite difference package FLAC 3D (Fast Lagrangian Analysis of Continua in 3-D).

TL;DR: In this article, a series of unconfined compressive strength (UCS) tests were carried out on both non-reinforced and fibre reinforced cemented tailings.

TL;DR: In this article, a large-scale shaking table test model was constructed in a large laminar shear container, which included geogrid reinforced rigid retaining walls and unreinforced soil retaining walls.

TL;DR: In this paper, the reaction of geosynthetic-encased stone columns (GECs) in soft soils under embankment loading was modeled with an indoor physical model test and numerical models using three dimensional and two dimensional finite element methods.

TL;DR: In this article, Van Eekelen et al. used the CA model for the design of the geosynthetic reinforcement (GR) in a piled embankment and further validated this model with measurements from seven full-scale tests and four series of scaled model experiments.

TL;DR: In this article, a case history on the performance of a coastal embankment reinforced by a layer of geotextile at the bottom of the embankments on soft marine deposits is presented.

TL;DR: In this paper, two geogrid types, with square and triangular-shaped apertures, were used in the laboratory to calibrate an aggregate imaging-based Discrete Element Method (DEM) modeling approach, which is capable of creating actual ballast aggregate particles as three-dimensional polyhedron blocks having the same particle size distributions and imaging quantified average shapes and angularities.

TL;DR: In this article, the effect of the length of reinforcement, number of steps and shape of the reinforcement arrangement (zigzag vs. parallel) on the failure mode, the wall displacement, and the acceleration amplification factor are investigated.

TL;DR: In this article, discrete polyethylene terephthalate (PET) fibers were randomly mixed with fine soil to modify their mechanical properties and the results indicated that the reinforced specimens presented an increment of shear strength that was associated with the increasing quantities of the PET fiber.

TL;DR: The ability of geosynthetic clay liners (GCLs) to contain acidic mining leachates is examined in this article, where the results of saturated hydraulic conductivity (k) of two GCLs permeated with sulfuric acid solutions (H2SO4) at 0.015 m, 0.125 m and 0.5 m concentrations are reported.

TL;DR: Expanded polystyrene (EPS) geofoam is an ultra-light geosynthetic often incorporated in transportation infrastructure to reduce horizontal and vertical stresses imposed on buried pipeline and culvert systems as discussed by the authors.

TL;DR: In this article, the suitability of the geocell reinforcement in protecting the underground utilities and buried pipelines was evaluated on small diameter PVC pipes, buried in geocell reinforced sand beds, where the vehicle tire contact pressure was simulated by applying the pressure on the top of the bed with the help of a steel plate.

TL;DR: In this paper, a sandy clay from the northeast region of Portugal has been reinforced with polypropylene fibres and cement, and seismic wave velocity measurements and uniaxial compression strength tests were performed.

TL;DR: In this paper, a series of large-scale direct shear tests were carried out to investigate the interface shear strength of subballast stabilised with geogrids and geomembranes, respectively.

TL;DR: In this article, the authors focus on understanding the seismic response of geosynthetic reinforced retaining walls through shaking table tests on models of modular block and rigid faced reinforced retaining wall.

TL;DR: In this paper, the authors present the results of numerical investigation into the performance of geosynthetic reinforced embankments supported on end bearing as well as floating piles considering the pile-soil interaction.

TL;DR: In this paper, the authors reviewed sixtynine field failures involving geotextile filters which performed unsatisfactorily and classified them into four categories; inadequate design, atypical soils, unusual permeants, and improper installation.

TL;DR: In this article, the authors investigated the short-term and long-term performance of reinforced, deep mixing method (DMM) supported embankments with and without prefabricated vertical drains (PVDs) using a fully 3D coupled model.

TL;DR: In this article, a breakthrough time based design method for determining the design thickness of landfill composite liners is proposed, which is based on analytical solutions developed for solute advection and dispersion of leachate contaminants.

TL;DR: In this paper, the performance of improved soft Bangkok clay with prefabricated vertical drains (PVDs) combined with embankment preloading and vacuum preloading was evaluated in terms of settlements and flow parameters using analytical methods and numerical simulations in ABAQUS software.

TL;DR: In this paper, Wu et al. proposed a new simple analytical procedure that includes the effect of the induced stress due to backfill compaction for use with conventional design methods of geosynthetic reinforced soil (GRS) walls.

TL;DR: In this paper, a cyclic plate load was applied through a 0.3m diameter plate on Kansas type aggregate bases with thicknesses of 0.15, 0.23, and 0.30 meters.

TL;DR: In this article, the pullout resistance mechanism of the bearing reinforcement embedded in cohesive-frictional soils with various fine contents is presented in order to estimate the total pullout resistances.

TL;DR: In this article, the effect of well resistance on the nonlinear consolidation behavior of ground with vertical drains has been investigated and a simplified analytical solution is derived for a general time-variable surcharge loading.

TL;DR: In this paper, the authors present the results of a numerical investigation into the settlement behavior of embankment constructed on geosynthetic-encased stone column installed in soft ground.

TL;DR: In this article, the results of comprehensive parametric analysis varying reinforcement spacing, reinforcement strength and footing location, highlighting the stability benefits of top-down and bottom-up reinforcement density approaches.

TL;DR: In this article, the authors investigated the encasement effect in ESC remediation and the effect of the following important design parameters in reducing lateral ground deformation: the thickness, the tensile stiffness, and the permeability of the geosynthetic; the ESC diameter; and the distributed load at the SC surface.

TL;DR: In this paper, seven reconstituted sands of different mineralogies and different particle size distributions, from uniform to well-graded and coarse to fine, were tested under one-dimensional compression, with and without reinforcement by discrete fibres.