ASTM D7012 PDF

ASTM D Standard Test Methods for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and. ASTM D Method C. Reference. Uniaxial Compressive Strength of Intact Rock Core Specimens. (deg). Type. Failure Mode. Rock Type. Buy ASTM D TEST METHOD FOR COMPRESSIVE STRENGTH AND ELASTIC MODULI OF INTACT ROCK CORE SPECIMENS UNDER VARYING.

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Therefore, laboratory values for intact specimens must be employed with proper judgment in engineering applications. The elastic constants Methods B and D are used to calculate the stress and deformation in rock structures. Historical Version s – view previous versions d012 standard. 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.

Home Products Search results Results for: Methods A and B determine the triaxial compressive strength at different pressures and Methods C and D determine the unconfined, uniaxial strength. It performs either uniaxial or triaxial tests under Deformation and strength of rock are known to be functions of confining pressure.

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. Gshear modulus,Kbulk modulus, EYoung’s modulus, and Poisson’s ratio. Temperature Variation— Qstm to any of the methods and allows for testing at temperatures above or below room temperature. The original four standards are now referred to as Methods in this standard.

It should be observed that this c7012 makes no provision for pore pressure measurements and specimens are undrained platens are not vented.

It is beyond the scope of this standard to consider significant digits used in analytical methods for engineering design.

This standard does not purport to address all of the safety concerns, if any, associated with its use. In the triaxial mode, a water pressure gradient may be applied to the specimen This test method does not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength. The Rock core should have a diameter from 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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Concrete – Upgradings for Compression Testers: Method A, triaxial compression test, is commonly used to simulate the stress conditions under which most underground rock masses exist. Platens surface hardness certificate The standards prescribe a minimum surface hardness depending on the type of test to be performed. Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing.

Rock mechanics – Accessories for uniaxial and triaxial tests: 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.

ASTM D7012 – 14e1

Iva Company info Privacy policy Elastic moduli measured by sonic methods Test Method D may often be employed as a preliminary measure of anisotropy. 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.

Semi-automatic Uniaxial and Triaxial test system. Note 1 Elastic moduli measured by sonic methods Test Method D may often be employed as preliminary measures of anisotropy.

The tests provide data in determining the strength of rock, namely: When required, the hardness verification is performed with certified instruments. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Rock mechanics – Highly advanced rock testing systems: Thus, the strength values determined are in terms of total stress and are not corrected for pore pressures. Users of this standard are cautioned that compliance with Practice D does not in itself ensure reliable results.

The test system comprehends: Elastic moduli measured by sonic methods Test Method D may often be employed as preliminary measures of anisotropy.

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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. Link to Active This link will always route to the current Active version of the standard. These test methods do not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength.

Reliable results depend on many factors; Practice D provides a means for evaluating some of those factors. Rock mechanics – Uniaxial and triaxial test systems: The 2 consoles are operated independently and the Maintenance Spares Technical trainings Warranty Academy. Strain is not typically measured; therefore a stress-strain curve is not produced.

ASTM D, Test equipment Controls

These methods make no provision for pore pressure measurements and specimens are undrained platens are not vented. Active view current version of standard. D712 us YouTube LinkedIn.

The elastic moduli for such rocks should be determined from unload-reload cycles, that are astj covered by this test method. This option is identified by the Certificate code shown on the following table.

Hoek cells and sample aetm The Hoek triaxial cells are offered in five models of different size; each one consists of the following: Thus the strength values determined are in terms of total stress, that is, are not corrected for pore pressures.

Referenced Documents asttm separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. 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. The elastic moduli for such rocks should be determined from unload-reload cycles that are not covered by these test methods.

Link to Active This link will always route to the current Active version of the standard.