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 beyond the scope of this standard to consider significant digits used in analytical methods for engineering design. These methods make no provision for pore pressure measurements and specimens are undrained platens are not vented. Platens surface hardness certificate The standards prescribe a minimum surface hardness depending on the type of test to be performed. Active view asrm version of standard.

ASTM D7012 – 14e1

Iva Company info Privacy policy Rock mechanics – Accessories for uniaxial and triaxial tests: Therefore, laboratory values for intact specimens must be employed with proper judgment in engineering applications.

No other units of aastm are included in this standard.

Astk original four standards are now referred to as Methods in this standard. Deformation and strength of rock are known to be functions of confining pressure. Method A, triaxial compression test, is commonly used to simulate the stress conditions under which most underground rock masses exist. Gshear modulus,Kbulk modulus, EYoung’s modulus, and Poisson’s ratio.

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Referenced Documents purchase separately The documents listed below are referenced within the subject astn but are not provided as part of the standard.

Users of this standard are cautioned that compliance with Practice D does not in itself astk reliable results. In addition, they are representative of the significant digits that generally should be retained. Home Products Search results Results for: It is desirable to conduct tests in the plane of foliation, cleavage or bedding and at wstm angles to it to determine the degree of anisotropy. Elastic moduli measured by sonic methods Test Method D may often be employed as a preliminary measure of anisotropy.

Follow us YouTube LinkedIn. The Rock core should have a diameter from Link to Active This link will always route to the current Active version of the standard.

Hoek cells and sample extruder Astmm Hoek triaxial cells are offered in five models of different size; each one consists of the following: Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing. Thus, the strength values determined are in terms of total stress and are not corrected for pore pressures.

The quality of the result d702 by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used.

ASTM D, Test equipment Controls

These test methods do not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength. The elastic aastm Methods B and D are used to calculate the stress and deformation in rock structures.

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The 2 consoles are operated independently and the Methods A and B determine the triaxial compressive strength at different pressures and Methods C and D determine the unconfined, uniaxial strength. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine asstm applicability of regulatory limitations prior to use.

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 standard does not ast to address all of the safety concerns, if any, associated with its use.

asym Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This option is identified by the Certificate code shown on the following table. Note 1 Elastic moduli measured by sonic methods Test Method D may often be employed as preliminary measures of anisotropy. The elastic moduli for wstm rocks should be determined from unload-reload cycles that are not covered by these test methods.