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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Rock mechanics – Uniaxial and triaxial test systems: Elastic moduli measured by sonic methods Test Method D may often be employed as a preliminary measure of anisotropy. Active view current version of standard.
ASTM D, Test equipment Controls
Historical Version s – view previous versions of standard. When required, the hardness verification is performed with certified instruments. This standard does not purport to address all of the safety concerns, if any, associated with its use. Thus the strength values determined are in terms of total stress, that is, are not corrected for pore pressures.
The elastic moduli for x7012 rocks should be determined from unload-reload cycles, that are not covered by this test method. Users of this standard are cautioned that compliance with Practice D does not in itself ensure reliable results.
Rock mechanics – Accessories for uniaxial and triaxial tests: 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. Strain is not typically measured; therefore a stress-strain curve is not produced. It should be observed that this method makes no provision for pore pressure measurements and specimens are undrained platens are sstm vented.
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. 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.
It is beyond the scope of this standard to consider significant digits used in analytical methods for engineering d7102. Platens surface hardness certificate The standards prescribe a minimum surface hardness depending on the type of test to be performed. This test method does not include the procedures necessary to obtain d701 stress-strain curve beyond the ultimate strength. Deformation and strength of rock are known to be functions of confining pressure.
The tests provide data in determining the strength of rock, namely: Elastic moduli measured by sonic methods Test Method D may often be employed as preliminary measures of anisotropy. The 2 consoles are operated independently and the In the triaxial mode, a water pressure gradient may be applied to the specimen Semi-automatic Uniaxial and Triaxial test system.
The Rock core should have a diameter from Rock mechanics – Highly advanced rock testing systems: Home Products Search results Results for: It performs either uniaxial or triaxial tests under Reliable results depend on many factors; 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. Temperature Variation— Applies to any of the methods and allows for testing at temperatures above or below room temperature.
Follow us YouTube LinkedIn. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part 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.
Maintenance Spares Technical trainings Warranty Academy. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part aatm the standard. Link to Active This link will always route to the current Active version of the standard.
ASTM D7012 – 14e1
Hoek cells and sample extruder The Hoek triaxial cells are offered in five models of different size; each one consists of the following: Gshear modulus,Kbulk modulus, EYoung’s modulus, and Poisson’s ratio. However, there are some cases where either the rock type or the loading condition of the problem asrm consideration will require the effective stress or drained parameters asym determined.
These test methods do not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength. No other units of measurement are included in this standard.
Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing. Method D7021, triaxial compression test, is commonly used to simulate the stress conditions under which most underground rock masses exist. Thus, the d70122 values determined are in terms of total stress and are not corrected for pore pressures. The elastic moduli for such rocks should be determined from unload-reload cycles that are not covered by these test methods. These methods make no provision for pore pressure measurements and specimens are undrained platens are not vented.
The test system comprehends: 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.