This standard is issued under the fixed designation D ; the number . 1 This test method is under the jurisdiction of ASTM Committee D18 on Soil and. GeoTesting Express is a provider of Rock Testing Services – ASTM D, Standard Test Method for Splitting Tensile Strength of Intact Rock Core Specimens. We propose two compression device models for indirect tensile test (splitting test) conforming to ASTM D and to ISRM Specifications. Model conforming to.

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ASTM D, Test equipment Controls

The quality of the results produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Historical Version s – view previous versions of 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. Compression testing, indirect tensile strength, loading tests, rock, splitting tensile strength, tension properties, Brazilian tensile strength.

It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design.

ASTM D – 08 Standard Test Method for Splitting Tensile Strength of Intact Rock Core Specimens

Circular disk with a thickness-to-diameter ratio between 0. In addition, they are representative of the significant digits that generally should be retained. However, the direct tensile test is difficult and expensive for routine application.


Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Under such conditions, the tensile strength should be obtained with the presence of compressive stresses to be representative of the field conditions.

Rock testing Lab Services: Also, by testing across different diametrical directions, possible variations in tensile strength for anisotropic rocks can be determined. The diameter shall be at least 10 times greater than the largest mineral grain constituent. Enough samples to represent a valid average of the type of rock under consideration; however the standard recommends For Individuals with needing special assistance for disabilities or limited English proficiency Please contact our Title VI specialist at Furthermore, engineers involved in rock mechanics design usually deal with complicated stress fields, including various combinations of compressive and tensile stress fields.

Under these conditions, tensile strength should be obtained with the presence of compressive stresses as is what occurs in this test to be representative of the field conditions. For more information, contact: This test is a simpler and less expensive alternative to the direct tensile test method. Rock testing Back to Results Print.

Reporting of test results in units other than SI shall not be regarded as nonconformance with this test method. Since it is widely used in practice, a uniform test method is needed for data to be comparable.


Compression tests

The values given in parentheses are mathematical conversions to inch-pound units, which are provided for information only and are not considered standard. Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors.

The splitting tensile test appears to offer a desirable alternative, because it is much simpler and inexpensive.

This test determines the splitting tensile strength of rock by diametral line compression of a disk of rock. Users of this standard are cautioned that compliance with Practice D does not in itself assure reliable results. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives; and it is common practice to increase or reduce significant digits of reported data to be commensurate with these considerations.

In rock mechanics design, complicated stress fields are often encountered.

A uniform test is also needed to make sure that the disk specimens break diametrically due to tensile stresses perpendicular to the loading diameter. Request Asrm Client Login. Link to Active This link will always route to the current Active version of the standard. These include combinations of compressive and tensile stress fields.