...J. Lin; T. D. Stark; A. Idries Residual interface strength is mobilized along sideslopes of geosynthetic lined areas, such as landfill sideslope. Unfortunately, only the large displacement (LD) interface strength is measured in frequently used direct shear tests, which overpredicts the residual...

...C. Kayadelen; G. Altay; Y. Önal; M. Öztürk This paper presents an experimental study investigating the effect of particle shape of granular soils on the shear strength characteristics via direct shear tests. Thirty direct shear tests were conducted on spherical and crushed sand mixtures...

... 2021 © 2021 Thomas Telford Ltd 2021 Geosynthetics multilayer liner geomembrane geocomposite direct shear test A composite liner system consisting of several layers of geosynthetics is often required in modern municipal solid waste (MSW) landfills to prevent leachate infiltration...

... of large-scale direct shear tests that are used to investigate the shear behaviour of a gravelly soil–geogrid interface under normal cyclic load (NCL) conditions. The results show that the shear stress magnitude under NCL conditions is generally between the shear stresses under normal static load (NSL...

... (soil/GM), providing an even deeper understanding than those presented in other studies. The large direct shear test has been used to carry out this testing programme since the applied normal stress range was between 25 and 500 kPa. Both Giroud et al. (1990) and Briançon et al...

...C.-C. Huang; H.-Y. Hsieh; Y.-L. Hsieh ABSTRACT: A series of direct shear tests were performed using an idealised two-dimensional test medium consisting of rhombically stacked steel rods to facilitate displacement computations for reinforced slopes using a force-equilibrium-based finite-displacement...

... tests before and after creep. The study found that the post-creep frictional resistance appeared to be approximately the same as that obtained from a direct shear test without creep. The shear creep behaviour of sand–geomembrane interfaces followed the typical pattern of material creep, and under...

...J. Lovisa; S.K. Shukla; N. Sivakugan ABSTRACT: The shear strength behaviour of randomly distributed dry fibre-reinforced sand has been extensively studied in recent decades. However, in foundation applications, sand will rarely be in a dry condition. Hence direct shear tests were conducted...

... strengths Direct shear test Shear strength Slope stability Water pressures This project involved an innovative water supply system for a new housing development near Greeley, Colorado. The system consists of a non-potable irrigation pond, a vertical turbine pump station with an automatic self...

... cover material over the drainage sand layer. Laboratory direct shear tests revealed that the shear strength of this interface is sensitive to the moisture content of the exposed compacted clay liner. The direct shear tests revealed reductions in the available shear strength of 35% and 37% for the peak...

... 21 09 2004 © 2004 Thomas Telford Ltd 2004 Geosynthetics Interface shear resistance Design Direct shear test Ring shear test Shear strength Slope stability The main objectives of this manuscript are to clarify the recommendations for the design of geosynthetic-lined...

...R. B. Gilbert; S. G. Wright; M. K. Shields; J. E. Obermeyer The objective of this paper is to establish the minimum available shear strength for any type of geosynthetic clay liner (GCL) in a base liner. Direct shear tests are conducted on very thin (nominally 1 mm thick) specimens of reconstituted...

...R.P. Hillman; T.D. Stark Torsional ring shear and large-scale direct shear tests were conducted to investigate the shear behavior of polyvinyl chloride (PVC) geomembrane-geosynthetic interfaces. Specifically, the smooth and faille-finished sides of a 0.75 mm-thick PVC geomembrane were sheared...

...V.C. Xenaki; G.A. Athanasopoulos The results of laboratory direct shear tests conducted at the expanded polystyrene (EPS) geofoam-sand interface are presented in this paper. The sands used in the tests were composed of rounded to subangular particles with values of mean particle size ranging from...

... to understand the physical interaction between tire shreds, or rubber-sand, and the geosynthetic of interest. A laboratory testing program consisting of direct shear tests, interface direct shear tests, and geosynthetic pullout tests was conducted to determine the interaction properties of tire shreds...