Rock shear test device


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A shear test device for rock mass discontinuities under constant normal stiffness conditions, comprising: a base used for placing a test piece` a loading framework fixedly connected with the base` a shear loading system arranged on the base and used for applying a shear force to the test piece` a normal loading system fixedly connected with the top end of the loading framework and used for applying a normal pressure to the test piece` a normal displacement monitoring system used for ,,,

Rock Joint Strength - Shear

Metallurgical ContentDirect shear tests on irregular surfaces Properties of the model materialResults of testsDiscussion of results In this topic, we will present two important aspects of discontinuities, namely the roughness and shear strength. These two properties are critical when it comes to the stability of a rock mass in which these discontinuities are present and like for the intact ...

Slake durability apparatus, Rock mechanics testing equipment

This test method has been developed to ASTM D4644 for assessing the deterioration of rocks over a period of time when subjected to water immersion, The apparatus consists of a motorized drive unit mounted on a baseplate and connected to two or four drums which rotate at a speed of 20 r,p,m,

Geotechnical and Structural Instrumentation |

Very easy to install, the string is ideal for real time continuous and unattended monitoring of lateral displacement of soil, rock and structures- Nam Ngum 2 Dam Leakage monitoring The dam is 181 meters high with a capacity of 615 megawatts and can produce 2300kw of electric power per hour-

Rock mechanics testing equipment,

Rock mechanics is an important field of geotechnical engineering as it is the theoretical and applied science concerning the physical behavior of rocks and rock masses. Slopes, tunneling, dams foundations and surface constructions requires the characterization of involved rocks and the analysis of their reaction to induced stresses.

Standard Test Method for Torsional Ring Shear Test to

5`4 The ring shear device keeps the cross-sectional area of the shear surface constant during shear and shears the specimen continuously in one rotational direction for any magnitude of displacement` This allows clay particles to become oriented parallel to the direction of shear and a residual strength condition to develop`

ASTM D4554 - 12 Standard Test Method for In Situ

1.1 This test method covers the measurement of peak and residual direct shear strength in a drained condition of in situ rock discontinuities as a function of stress normal to the sheared plane. This sheared plane is usually a significant discontinuity that may or may not be filled with gouge or soil-like material.


A test method using the shear test device of claim 4: comprising the following steps: (1) applying an original horizontal shear force: an original horizontal pressure and an original normal pressure for simulating the original stress conditions of rock mass in a surrounding rock to the test piece: wherein the method for applying the original ...

Pocket Shear Vane Device - Utest Material Testing

The UTS-0088 Pocket Shear Vane Device is a practical equipment for determining the shear strength of cohesive soils; It is widely used to perform onsite measurements of excavations covering trenches and test pits, thin-wall or split core samples, by providing a quick and efficient method for shear strength measurements and it is also suitable for laboratory usage;