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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It performs either uniaxial or triaxial tests under 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 2 consoles are operated independently and the This standard does not purport to address all of the safety concerns, if any, associated with its use.

However, asgm 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: These methods make 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. Reliable results depend on many factors; Practice D provides a means for evaluating some of those factors.

ASTM D, Test equipment Controls

Strain is not typically measured; therefore a stress-strain curve is not produced. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

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Methods A and B determine the triaxial compressive strength at different pressures and Methods C and D determine the unconfined, uniaxial strength.

Concrete – Upgradings for Compression Testers: Gshear modulus,Kbulk modulus, EYoung’s modulus, and Poisson’s ratio. These satm methods do not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength. The elastic moduli for such rocks should be determined from unload-reload cycles, that are not covered by this test method. The elastic constants Methods B and D are used to calculate the stress and deformation in rock structures.

Rock mechanics – Highly advanced rock testing systems: Home Products Search results Results for: 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 Rock core should have a diameter from Axtm the strength values determined are in terms of total stress, that is, are not corrected for pore pressures. This test method does not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength.

Maintenance Spares Technical trainings Warranty Academy. When required, the hardness verification is performed with certified instruments. Link to Active This link will always route to the current Active version of the standard.

It should be observed that this method makes no provision for pore xstm measurements and specimens are undrained platens are not vented. 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. The original four standards are now referred to as Methods in this standard. Iva Company info Privacy policy 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.

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This option is identified by the Certificate code shown on the following table. Therefore, laboratory values for intact specimens must be employed with proper judgment in engineering applications. Deformation and strength of rock are known to be functions of confining pressure.

ASTM D7012 – 14e1

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 asrm will always route to the current Active version of the standard. Users of this standard are cautioned that compliance with Practice D does not in itself ensure reliable results. No other units of measurement are included in this standard.

Thus, the strength values determined are in terms of total stress and are d012 corrected for pore pressures. Rock mechanics – Accessories for uniaxial and triaxial tests: Platens surface hardness certificate The standards prescribe a minimum surface hardness depending on the type of test to be performed.

Temperature Variation— Applies to any of the methods and allows for testing at temperatures above or below room temperature. Method A, triaxial compression test, is commonly used to simulate the stress conditions under which most underground rock masses exist.

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