ASTM D7012 PDF

26 Nov ASTM D Method C. Reference. Uniaxial Compressive Strength of Intact Rock Core Specimens. (deg). Type. Failure Mode. Rock Type. All the Controls products ASTM D standard. Enter now!. ASTM D Standard Test Methods for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and.

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Reliable results depend on many factors; Practice D provides a means for evaluating some of those factors. Methods A and B determine the triaxial compressive strength at different pressures and Methods C and D determine the unconfined, uniaxial strength. It should be observed that these methods make no provision for pore pressure measurements and specimens are undrained platens are not vented.

Iva Company info Privacy policy Note 1 Elastic moduli measured by sonic methods Test Method D may often be employed as preliminary measures of anisotropy. Link to Active This link will always route to the current Active version of the standard.

This option is identified by the Certificate code shown on the following table. Concrete – Upgradings for Compression Testers: It performs either uniaxial or triaxial tests under The elastic constants Methods B wstm D are used to calculate the stress and deformation in rock structures.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing. The Rock core should have a diameter from This standard does not purport to address all of the safety concerns, if any, associated with its use. Therefore, laboratory values for intact specimens must be employed with proper judgment in engineering applications.

Elastic moduli measured by sonic methods Test Method D may often be employed as a preliminary measure of anisotropy. d70012

ASTM D, Test equipment Controls

Deformation and strength of rock are known to be functions of confining pressure. Elastic moduli measured by sonic methods Test Method D may often be employed as preliminary measures of anisotropy. Strain is not typically measured; therefore a stress-strain curve is not produced.

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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.

The elastic moduli for such rocks should be determined from unload-reload cycles, that are aetm covered by this test method.

However, there are some cases where either the rock type or the loading condition of the problem under consideration will require the effective stress or drained parameters be determined. The tests provide data in determining the strength of rock, namely: The original four standards are now referred to as Methods in this standard. Temperature Variation— Applies to any of the methods and allows for testing at asfm above or below room temperature.

This test method does not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength. The test method specifies the apparatus, instrumentation, and procedures for determining the stress-axial strain and the stress-lateral strain curves, as well as Young’s modulus, Eand Poisson’s ratio.

No other units of measurement are included in this standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Active view current version of standard. These test methods do not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength. Home Products Search results Results for: These test methods do not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength.

Rock mechanics – Uniaxial and triaxial test systems: Thus the strength values determined are in terms r7012 total stress, that is, are not corrected for pore pressures. Thus the strength values determined are in terms of total stress, that is, are not corrected for pore pressures.

Maintenance Spares Technical trainings Warranty Academy. The elastic moduli for such rocks should be determined from unload-reload cycles, that are not covered by this test method. The elastic moduli for such rocks should be determined from unload-reload cycles that are not covered by these test methods.

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Thus, the strength values determined are in terms of total stress and are not corrected for pore pressures. 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. 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.

Rock mechanics – Highly advanced rock testing systems: The test system comprehends: Note 1 — Elastic moduli measured by sonic methods Test Method D may often be employed as a preliminary measure of anisotropy. Link to Active This link will always route to the current Active version of the standard. When required, the hardness verification asfm performed with certified instruments. These astk make no provision for pore pressure measurements and specimens are undrained platens are not vented.

The 2 consoles are operated independently and the Rock mechanics – Accessories for uniaxial and triaxial tests: The tests provide data in determining the strength of rock, namely: Referenced Documents purchase separately Ast documents listed below are referenced within the subject standard but are not provided as part of the standard. It is beyond the scope of this standard to consider significant digits used in analytical methods for engineering design. No other units of measurement are included in this standard.

It is desirable to conduct tests in the plane of foliation, cleavage or bedding and at right angles to it to determine the degree of anisotropy.

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