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 constant normal load boundary condition may not be appropriate for problems where shearing is dilatancy controlled and the normal stress is not constant along the discontinuity. During the test, shear strength is determined at various applied stresses normal to the sheared plane and at various shear displacements.

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Historical Version s – view previous versions of standard. Only one discontinuity per specimen can be tested.

Users of this standard are cautioned that compliance with Practice D does not in itself assure reliable results. Discontinuities may be open, partially or completely healed or filled that is, clay fillings and gouge.

Rock shear box apparatus

In addition, they are representative of the significant digits that generally should be retained. Privacy Policy Sensors Sitemap. Only one discontinuity per specimen can be tested. Link to Active This link will always route to the current Active version of the standard.

The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. When the normal force is not sufficient to restrain dilation, the shear mechanism consists of the overriding of the asperities. It is the responsibility of the satm of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Two versions are available:. ASTM D Use This test method establishes requirements and laboratory procedures for performing direct shear strength tests on rock specimens. Therefore nominal area is used for loading purposes astmm calculations. The actual contact areas during testing change, but the actual total contact surface is unmeasurable. Samples should be sealed in a plastic wrap inside their shipping sstm, protected against air, moisture, and direct sunlight. The apparatus consists of a shear box designed to accept samples not larger than x mm, or alternatively cores up to mm dia.

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Clearly label the sample with source, date taken, intact or sliding friction, and a short, unambiguous, identification code. However, a clean, open discontinuity may be free draining, and, therefore, a test on a clean, open discontinuity could be considered a drained test. It includes procedures for both intact rock strength and sliding friction tests, which can be performed on specimens that are homogeneous, or have planes of weakness, including natural or artificial discontinuities.

Relationships derived from the test data include shear strength versus normal stress and shear stress versus shear displacement shear stiffness. Therefore nominal area is used for loading purposes and calculations. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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.

The test is usually conducted in the undrained state with an applied constant normal load. Reporting of test results in units other than SI shall not be regarded as nonconformance with this test method. Report of direct shear strengths five to nine pages depending on sample type including the following:. Note 1—The term “normal force” is used in the title instead of normal stress because of the indefinable area of contact and the minimal relative displacement between upper and lower halves of the specimen during testing.

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In situ direct shear testing limits the inherent scale effects found in rock mechanics problems where the laboratory scale may not be representative of the field scale. Relationships derived from the test data include shear strength versus normal stress and shear stress versus shear displacement shear stiffness.

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However, a clean, open discontinuity astn be free draining, and, therefore, a test on a clean, open discontinuity could be considered a drained test. Sliding on and shearing of the asperities can occur simultaneously.

It includes procedures d56077 both intact rock strength and sliding friction tests which can be performed on specimens that are homogeneous, or have planes of weakness, including natural or artificial discontinuities. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Discontinuities may be open, partially or completely healed or filled that is, clay fillings and gouge.

Note 2—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. The shear box consists of two halves, the upper being connected to two rams for reversible shearing action d55607 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, d5067 other factors can cause the rock mass to behave as an anisotropic and heterogeneous discontinuum. The actual contact areas during testing change, but the actual total contact surface is unmeasurable.

It is a simple and practical method of determining the strength and slope stability of rock, both in the field and in the laboratory. Samples should be concrete or rock cores with a diameter no greater than Two versions can be used to complete the testing configuration: Print and complete the following order form. Examples of an artificial discontinuity include a rock-concrete interface or a lift line from a concrete pour.

Two set of cables are required.