Results 251 to 260 of about 21,244 (299)

Sand–geotextile interface shear strength by torsional ring shear tests

Geotextiles and Geomembranes, 1998
Abstract The torsional ring shear apparatus was developed to evaluate the residual shear strength of soft soils. It has the advantage of allowing large displacement to take place while shearing. In using geotextiles for geotechnical engineering applications, the soil–geotextile interface shear strength is an important design parameter.
S.A Tan, S.H Chew, W.K Wong
openaire   +1 more source

Evolution of Shear-Zone Structure in Undrained Ring-Shear Tests

Landslides, 2004
Undrained monotonic torque-controlled tests were conducted on fine-grained silica sand to study the shear-deformation process in granular materials by using a ring-shear apparatus. Shear-zone structures at various stages in the undrained shear tests were observed during a series of tests in which the experiments were terminated at different shear ...
Muhammad Wafid Agung, Kyoji Sassa, Hiroshi Fukuoka, Gonghui Wang   +3 more
openaire   +1 more source

High velocity ring shear tests on sand

Géotechnique, 1984
Ring shear tests on sand materials have been carried out to show whether there is a change in the behaviour of these materials at high shearing rates and normal stresses. This question is relevant to the problem of the mobility of large rock avalanches (stürzstroms), but is also of more general academic interest.
Morgenstern, N. R., Hungr, O.
openaire   +2 more sources

Ring Shear Testing of Deposited Coatings

1987
This paper discusses ring shear tests for quantitatively measuring the adhesion between metal coatings and their substrates. Details are presented on the testing procedure and the various substrate-coating combinations that have been evaluated by this method.
JW Dini, WK Kelley, HR Johnson
openaire   +1 more source

Constant Volume Ring Shear Specimen Trimming and Testing

Geotechnical Testing Journal, 2021
The constant volume ring shear (CVRS) apparatus can use intact/undisturbed specimens to measure the peak and residual undrained shear strengths to estimate the post-peak strength reduction for seismic stability and permanent deformation analyses. A trimming apparatus and specimen container were fabricated to allow the trimming of an intact annular ...
openaire   +1 more source

Comparison of Shear Behaviour of sandy soils by Ring-Shear Test with Conventional Shear Tests

1998
The relation of shear behaviour of dry Toyoura standard sand between the ring-shear test, triaxial compression test and two types of shear-box tests was compared. Test results shows that the peak internal friction angles from the ring-shear test fitted those from shear-box tests, while there was a certain difference from triaxial compression test. Then,
Yasuhiko Okada, Kyoji Sassa, Hiroshi Fukuoka   +2 more
openaire   +1 more source

Shear Band Formation Observed in Ring Shear Tests on Sandy Soils

Journal of Geotechnical and Geoenvironmental Engineering, 2010
Shear band formation is an important factor in understanding failures in soil. In this paper, shear localization and shear band formation and evolution are examined using ring shear tests performed on three sands prepared by air pluviation. A transparent outer confining ring was used to visualize formation and evolution of the entire shear band.
Abouzar Sadrekarimi, Scott M. Olson
openaire   +1 more source

Rapid estimation of residual shear strength by ring shear test

2011
The residual shear strength of the soils is one of the main inputs for analyzing the stability of pre-failed slopes and the progressive failure problems, which generally occur in fissured clay slopes, caused by strength reduction with displacement. In practice, it is important to decide the residual shear strength parameters as quick as possible in an ...
Iyisan R., Cevikbilen G., Hatipoglu M.
openaire   +1 more source

Drained Shear Displacement Rates in Fully Softened Strength Torsional Ring Shear Testing

Geotechnical Testing Journal, 2020
ABSTRACT To measure the fully softened strength, the normally consolidated and reconstituted specimen must be drained, i.e., no development of shear-induced pore-water pressures, during shearing. This article investigates (1) typical shear displacement rates in torsional ring shear tests that yield drained shearing conditions for a range
Timothy D. Stark, Jack A. Cadigan, Navid H. Jafari   +2 more
openaire   +1 more source

Preparation of metals for plating: Ring shear tests

Surface Technology, 1977
Abstract Ring shear tests for measuring the adhesion of metal deposits were used to evaluate methods of preparing the following substrates for plating: beryllium—copper; SA 106 and 4130 steels; 17-4 PH, 405, 410 and 416 stainless steels; and thorium.
J.W. Dini, H.R. Johnson
openaire   +1 more source