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 is desirable to conduct tests in the plane of foliation, cleavage or ast and at right angles to it to determine the degree of anisotropy. In the triaxial mode, a water pressure gradient may be applied to the specimen Note 1 Elastic moduli measured by sonic methods Test Method D may often be employed as preliminary measures of anisotropy. It performs either uniaxial or triaxial tests under 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.

It should be observed that this method makes no provision for pore pressure measurements and specimens are undrained platens are not vented. No other units of measurement are included in this standard. The test system comprehends: Temperature Variation— Applies to any d70012 the methods and allows for testing at temperatures above or below room temperature.

Gshear modulus,Kbulk modulus, EYoung’s modulus, and Poisson’s ratio. The elastic moduli for such rocks should be determined from unload-reload cycles that are not covered by these test methods. The tests provide data in determining the strength of rock, namely: Reliable results depend on many factors; Practice D provides a means for evaluating some of those factors.

This test method d70012 not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength. Link to Active This link will always route to the current Active version of the standard. This standard does not purport to address all of the safety concerns, if any, associated with its use.

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Rock mechanics – Accessories for uniaxial and triaxial tests: 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 Rock core should have a diameter from Methods A and B determine the triaxial compressive strength at different pressures and Methods C and D determine the unconfined, uniaxial strength.

Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing. 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. Maintenance Spares Technical trainings Warranty Academy.

Therefore, laboratory values for intact specimens must be employed with proper judgment in engineering applications. Iva Company info Privacy policy Active view current version of standard. Semi-automatic Uniaxial and Triaxial test system. Follow us YouTube LinkedIn. The original four standards are now referred to as Methods in this standard.

When required, the hardness verification is performed with certified c7012.

ASTM D, Test equipment Controls

Deformation and strength of rock are known to be functions of confining pressure. 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. xstm

The elastic moduli for such rocks should be determined from unload-reload cycles, that are not covered by this test method. Platens surface hardness certificate The standards prescribe a minimum surface hardness depending on the type of test to be performed.

Link to Active This link 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.

Rock mechanics – Highly asrm rock testing systems: These test methods do not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength.

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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. These methods make no provision for x7012 pressure measurements and specimens are undrained platens are not vented. Referenced Documents purchase separately The documents listed below are referenced within the subject standard asstm are not provided as part of the standard.

This option is identified by the Certificate code shown on the following table.

ASTM D7012 – 14e1

Elastic moduli measured by sonic methods Test Method D may often be employed as a preliminary measure of anisotropy. Concrete – Upgradings for Compression Testers: Hoek cells and sample extruder The Hoek triaxial cells are offered in five models of different size; each one consists of the following: 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.

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Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Thus, the strength values determined are in terms of total stress and are not corrected for pore pressures.

Strain is not typically measured; therefore a stress-strain curve is not produced. It is beyond the scope of this standard to consider significant digits used in analytical methods for engineering design.

The elastic constants S7012 B and D are used to calculate the stress and deformation in rock structures. In addition, they are representative of the significant digits that generally should be retained.

The 2 consoles are operated independently and the Home Products Search results Results for: Historical Version s – view previous versions of standard.