ASTM D5607 PDF

ASTM D5607 PDF

GeoTesting Express is a provider of Rock Testing Services – ASTM D – Sliding Friction,(Rock Sliding Friction) Standard Test Method for Performing. GeoTesting Express is a provider of Rock Testing Services – ASTM D – Direct Shear,(Rock Direct Shear) Standard Test Method for Performing Laboratory. Lab ID: ASTM D Use. This test method establishes requirements and laboratory procedures for performing direct shear strength tests on rock specimens.

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The test is usually conducted in the undrained state with an applied constant normal load. The normal loading system is complete with an adjustable low friction pressure maintainer to absorb volume changes of the specimen during the shearing action and to ensure a constant vertical stress. Discontinuities may be open, partially or completely healed or filled aatm is, clay fillings and gouge. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability atm regulatory limitations prior to use.

ASTM D Use This test method establishes requirements and laboratory procedures for performing direct shear strength tests on rock specimens. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. The shear box consists of two halves, the upper being connected to two rams for reversible shearing action and the lower connected to a ram for normal load application.

Pervasive discontinuities joints, bedding planes, shear zones, fault zones, schistosity in a rock mass, and genesis, crystallography, texture, fabric, and other factors can cause the rock mass to behave as an anisotropic and heterogeneous discontinuum. Privacy Policy Sensors Sitemap.

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The apparatus consists of a shear box designed to astn samples not larger than x mm, or alternatively cores up to mm dia. The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the zstm and facilities used.

Shear box made in aluminium alloy Maximun axial and shear load capacity: Therefore, it may be necessary to handle specimens in accordance with Practice D and to document moisture conditions in some manner in the data collection.

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During the test, shear strength is determined at various applied stresses normal to the sheared plane and at various shear displacements. Two versions can be used to complete the testing configuration: Order Form 2 Email complete form to contact listed below. It is a simple and practical method of determining the strength and slope stability of rock, both in the field and in the laboratory.

Reporting of test results in units other than SI shall not be regarded as nonconformance with this test method. This d56077 method establishes requirements and laboratory procedures for performing direct shear strength tests on astn specimens. Sliding on and shearing of the asperities can occur simultaneously. Only one discontinuity per specimen can be tested. Displacement and load readings shall be acquired by suitable datalogger that has to be add as accessory.

Since this test method makes no provision for the measurement of pore pressures, the strength values determined are expressed in terms of total stress, uncorrected for pore pressure.

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Relationships astk from the test data include shear strength versus normal stress and shear stress versus shear displacement shear stiffness. During the test, shear strength is determined at various applied stresses normal to the sheared plane and at various shear displacements. When the normal load is large enough to completely restrain dilation, the shear mechanism consists of the shearing off of the asperities.

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Only one discontinuity per specimen can be tested. This apparatus was originally developed at Imperial college, London, by Professor E. The values given in parentheses are mathematical conversions to inch-pound units, which are provided for information only and are not considered standard.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. A summary of peak shear stress, peak residual shear stresses, and residual shear stresses A figure of peak residual stress and residual shear stress vs. Therefore nominal area is used for loading purposes and calculations.

Samples should be sealed in a plastic wrap inside their shipping container, protected against air, moisture, and direct sunlight. For more info please refer to Releted Products below and Accessories section. Discontinuities may be open, partially or completely healed or filled that is, clay fillings and gouge. Clearly label the sample with source, date taken, intact or sliding friction, and a short, unambiguous, identification code. In situ direct shear testing limits the inherent scale effects found in rock mechanics problems d56607 the laboratory scale may not be representative of the field scale.