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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The elastic constants Methods B and D are used to calculate the stress and deformation in rock structures. In the triaxial mode, a water pressure gradient may be applied to the specimen When required, the hardness verification is performed with certified instruments.

Historical Version s – view previous versions of standard. It performs either uniaxial or triaxial tests under The elastic moduli for such rocks should be determined r7012 unload-reload cycles, that are not covered by this test xstm. It is desirable atm conduct tests in the plane of foliation, cleavage or bedding and at right angles to it to determine the degree of anisotropy.

It is the responsibility of the user of this standard to establish appropriate safety and health xstm and determine the applicability of regulatory limitations prior to use. Thus the strength values determined are in terms of total stress, that is, are not corrected for pore pressures. This standard does not purport to address all of the safety concerns, if any, associated with its use. Platens surface hardness certificate The standards prescribe a minimum surface hardness depending on the type of test to be performed.

ASTM D, Test equipment Controls

Semi-automatic Uniaxial and Triaxial test system. Iva Company info Privacy policy Rock mechanics – Accessories for uniaxial and triaxial tests: Home Products Search results Results for: 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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Link to Active This link will always route to the current Active version of the standard. Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing.

These methods make no provision for pore pressure measurements and specimens are undrained platens are not vented.

Reliable results depend on many factors; Practice D provides 7d012 means for evaluating some of those factors. Temperature Variation— Applies to any of the methods and allows for testing at temperatures above or below room temperature. Rock mechanics – Uniaxial and triaxial test systems: These test methods do not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength. D7102 option is identified by the Certificate code shown on the following table.

The original four standards are now referred to as Methods in this standard.

ASTM D7012 – 14e1

Thus, the strength values determined are in terms of total stress and are not corrected for pore pressures. Link to Active This link will always route to the current Active version of the standard.

No other units of measurement are included in this standard. Note 1 Elastic moduli measured by sonic methods Test Method D may often be ast, as preliminary measures of anisotropy.

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. It is the responsibility of the user of this standard to establish appropriate safety and health practices s7012 determine the applicability of regulatory limitations prior to use.

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Maintenance Spares Technical trainings Warranty Academy. Methods A and B determine the triaxial compressive strength at different pressures and Methods C and D determine the unconfined, uniaxial strength. In addition, they are representative of the significant digits that generally should be retained. 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.

This test method does not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength. Elastic moduli measured by sonic methods Test Method D may often be employed as a preliminary measure of anisotropy.

Therefore, laboratory values for intact specimens must be employed with proper judgment in engineering applications. Hoek cells and sample extruder The Hoek triaxial cells are offered in five models of different size; each one consists of the following: Strain is not typically measured; therefore wstm stress-strain curve is not produced.

It should be d712 that this method makes no provision for pore pressure measurements and specimens are undrained platens are not vented. It is beyond the scope of this standard to asm significant digits used in analytical methods for d70112 design.

Concrete – Upgradings for Compression Testers: Active view current version of standard.

Rock mechanics – Highly advanced rock testing systems: Method A, triaxial compression test, is commonly used to simulate the stress conditions under which most underground rock masses exist.