Effect of opening on the shear behavior of granular materials in direct shear test

Kim, Byeong Su; Shibuya, Satoru; Park, Seong Wan; Kato, Seishiro

doi:10.1007/s12205-012-1518-4

Cited by 26 publications

(17 citation statements)

References 15 publications

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“…A recent research developed by Kim et al [87] studied the effect of the gap between the two halves of the shear box on the shear behavior using seven types of granular soils (D 50 varying from 0.076 to 1.15 mm), using a type C of DSA. The authors found that the peak shear strengths decrease with the increase of the opening size results according to other researchers.…”

Section: Influence Of Opening Size Between the Two Halves Of Shear Boxmentioning

confidence: 99%

Soil Geosynthetic Interaction: Design Parameters from Experimental and Theoretical Analysis

Moraci

Cardile

Gioffrè

et al. 2014

Transp. Infrastruct. Geotech.

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The main objective of this paper is to discuss the experimental and theoretical approaches developed by different researchers in order to understand and to evaluate the soil geosynthetic interaction under different loading conditions. In the paper, the soil-geosynthetic interaction in pullout, direct shear, and inclined plane tests under both static and cyclic loading is analyzed based on the different theoretical and experimental results carried out by the authors and also available in literature. For each type of test, the factors affecting test results and soil-geosynthetic interface behavior, the theoretical model developed to predict the interface resistance and mobilized friction, and the relevance of the interface parameters obtained through the different tests in the design and performance of geosynthetic reinforced earth structures are discussed in detail.Keywords Geosynthetic . Interaction . Design . Laboratory tests . Modeling Transp. Infrastruct. Geotech. (2014) Grain size corresponding to 85 % in weight of passing soil (mm)Maximum grain size (mm) DrRelative density (%) f Cyclic tensile load frequency (Hz)Force required to hold back the upper box (kN)Lower support minimum length along the displacement direction (m) L R Reinforcement length in the anchorage zone (m) L U Upper box minimum length along the displacement direction (m) n t Number of geogrid bearing members n tbNumber of nodes in a transversal element P b1Maximum pullout bearing force of a single isolated transverse member (kN/m) P bn Maximum pullout bearing force (kN/m) P

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Section: Influence Of Opening Size Between the Two Halves Of Shear Boxmentioning

confidence: 99%

Soil Geosynthetic Interaction: Design Parameters from Experimental and Theoretical Analysis

Moraci

Cardile

Gioffrè

et al. 2014

Transp. Infrastruct. Geotech.

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“…For the mode of shear-speed control, rotation of the lower part of the chamber is forced by a servo-controlled ram at different constant angular shear speeds, while the upper stationary part opposes shearing through two arms with integrated force sensors to measure the sample's resistance during shearing. In direct shear box test, it has been pointed out that the shear results could be affected by the aperture between the stationary and moving parts in case of occurrence of outflow of samples from the aperture (Kim et al, 2012). Therefore, in our ring shear apparatus, a set of rubber edges (about 2 mm thick) between the upper and lower cylinder pairs is designed to prevent leakage of sample or pore-fluid, if present, and then effectively excludes the possible effect of aperture on the shear behavior.…”

Section: Experimental Methodsmentioning

confidence: 99%

Effect of particle size and shear speed on frictional instability in sheared granular materials during large shear displacement

Jiang

Wang

Kamai

et al. 2016

Engineering Geology

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“…The strain rates of shear tests were varied over a wide range based on the permeability of materials for ensuring proper dissipation of excess pore pressures as per the recommendations of [23,24]. Direct shear test is a robust device for quickly evaluating the shear characteristics of given soil material [25][26][27]. Also direct shear test can be easily modified to determine interface shear characteristics, replacing one half with different material.…”

Section: Methodsmentioning

confidence: 99%

Frictional and Interface Frictional Characteristics of Multi-layer Cover System Materials and Its Impact on Overall Stability

Yamsani

Sreedeep

Rakesh

2016

Int. J. of Geosynth. and Ground Eng.

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The municipal and hazardous landfills nearing its design capacity need to be isolated from the atmosphere using multi-layered cover system (MLCS). These MLCS constitutes different layers of soil and geosynthetics with widely varying properties. Each of these layers fulfil specific requirements by acting as a surface protection, drainage, separation, filtration and hydraulic barrier layers of MLCS. Failure of these MLCS leads to waste-atmosphere interaction and results in extremely hazardous situation to biosphere. The stability of MLCS significantly depends on the shear strength characteristics of materials used viz., the internal frictional characteristics of individual soil materials and interface frictional characteristics of soil-soil or soil-geotextile combination. In view of this, frictional characteristics of four type of soils, four soilgeotextile interfaces and one soil-soil interface was determined using direct shear and modified direct shear testing methods. The modification of geomembrane used in barrier layer was also attempted, for improving its interface shear characteristics. The usefulness of the above parameters and the influence of its variability on the slope stability of MLCS of a near surface low level radioactive waste disposal facility (NSDF) is demonstrated in this study.

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Effect of opening on the shear behavior of granular materials in direct shear test

Cited by 26 publications

References 15 publications

Soil Geosynthetic Interaction: Design Parameters from Experimental and Theoretical Analysis

Soil Geosynthetic Interaction: Design Parameters from Experimental and Theoretical Analysis

Effect of particle size and shear speed on frictional instability in sheared granular materials during large shear displacement

Frictional and Interface Frictional Characteristics of Multi-layer Cover System Materials and Its Impact on Overall Stability

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