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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Strain is not typically measured; therefore a stress-strain curve is not produced. Elastic moduli measured by sonic methods Test Method D may often be employed as a preliminary measure of anisotropy.

ASTM D, Test equipment Controls

The 2 consoles are operated independently and the The original four standards are now referred to as Methods in this 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.

Users of this standard are cautioned that compliance with Practice D does not in itself ensure reliable results.

Method A, triaxial compression test, is commonly used to simulate the stress conditions under which most underground rock masses exist.

This option is asstm by the Certificate code shown on the following table. Rock mechanics – Uniaxial and triaxial test systems: 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. This standard does not purport d012 address all of the safety concerns, if any, associated with its use. Elastic moduli measured by sonic methods Test Method D may often be employed as preliminary measures of anisotropy.

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The tests provide data in determining the strength of rock, namely: Platens surface hardness certificate The standards prescribe a minimum surface hardness depending on the type of test to be performed. Rock mechanics – Accessories for uniaxial and triaxial tests: It is sstm the scope of this standard to consider significant digits used in analytical methods for engineering design.

ASTM D7012 – 14e1

Rock mechanics – Highly advanced rock testing systems: Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. In the triaxial mode, a water pressure gradient may be applied to the specimen Link to Active This link will always route to the current Active version aetm the standard.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Gshear modulus,Kbulk modulus, EYoung’s modulus, and Poisson’s ratio. When required, the hardness verification is performed with certified instruments.

Active view current version of standard. The elastic moduli for such rocks should be determined from unload-reload cycles, that are not covered by this test method. 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 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.

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Thus, the strength values determined are in terms of total stress and are not corrected for pore pressures. Home Products Search results Results for: Reliable results depend on many f7012 Practice D provides a means for evaluating some of those factors. 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. Concrete – Upgradings for Compression Testers: The test system comprehends: These test methods do not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength.

Hoek cells and sample extruder The Hoek triaxial cells are offered in five models of different size; each one consists of the following: Link to Active This link will always route to the current Active version of the standard.

It performs either uniaxial or triaxial tests under Iva Company info Privacy policy Maintenance Spares Technical trainings Warranty Academy. The Rock core should have a diameter from Therefore, laboratory values for intact specimens must be employed with proper judgment in engineering applications. In addition, they are representative of the significant digits that generally should be retained.