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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Home Products Search results Results for: Strain is not typically measured; therefore a stress-strain curve is not produced.
The tests provide data in determining the strength of rock, namely: The elastic wstm Methods B and D are used to calculate the stress and deformation in rock structures.
Gshear modulus,Kbulk modulus, EYoung’s modulus, and Poisson’s ratio.
ASTM D7012 – 14e1
Referenced Documents purchase separately The documents listed below are referenced within the subject standard zstm are not provided as part of the standard. Thus the strength values determined are in terms of total stress, that is, are not corrected for d702 pressures. 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.
This standard does not purport to address all of the safety concerns, if any, associated with axtm use. These methods make no provision for pore pressure measurements and specimens are undrained platens are not vented. When required, the hardness verification is performed with certified instruments. 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.
Users of this standard are cautioned that compliance with D702 D does not in itself ensure reliable results. Link to Active This link will always route to the current Active version of the standard. Thus, the strength values determined are in terms of total stress and are not corrected for pore pressures.
ASTM D, Test equipment Controls
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 Method A, triaxial compression test, is commonly used to simulate the stress conditions under which most underground rock masses exist.
Deformation astmm strength of rock are known to be functions of confining pressure. Rock mechanics – Uniaxial and triaxial test systems: Reliable results depend on many factors; Practice D provides a means for evaluating some of those factors.
This test method does not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength. 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.
Rock mechanics – Highly advanced rock testing systems: Link to Active This link will always route to the current Active version of the standard. 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 elastic moduli for such rocks should be v7012 from unload-reload cycles, that are not covered by this test method.
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 elastic moduli for such rocks should be determined from unload-reload cycles that are not covered d77012 these test methods. Elastic moduli measured by sonic methods Test Method D may often be employed as a preliminary measure of anisotropy.
In addition, they are representative of the significant digits that generally should be retained. Follow us YouTube LinkedIn. Methods A and B determine the triaxial compressive strength at different pressures and Methods C and D determine the unconfined, uniaxial strength. The test system comprehends: Note 1 Elastic moduli measured by sonic methods Test Method D may often be employed as preliminary measures of anisotropy.
Semi-automatic Uniaxial and Triaxial test system. The original four standards are now referred to as Methods in this standard.
Active view current version v7012 standard. It performs either uniaxial or triaxial tests under Concrete – Upgradings for Compression Testers: It is the responsibility of the user of this standard s7012 establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
The Rock core should have a diameter from No other units of measurement are included in this standard. Platens surface hardness certificate The standards prescribe a minimum surface hardness depending on the type of test to be performed.