All the Controls products ASTM D standard. Enter now!. Designation: D – 85 (Reapproved )e1. AMERICAN SOCIETY FOR TESTING AND MATERIALS Barr Harbor Dr., West Conshohocken, PA ASTM De1 [ Withdrawn ]. Standard Practices for Preparing Rock Core as Cylindrical Test Specimens and Verifying Conformance to.

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These practices specify procedures for laboratory rock core test specimen preparation of rock core from drill core and block samples for strength and deformation testing and for determining the conformance of the test specimen dimensions with tolerances established by this practice.

Cubical, rectangular, or other shapes aatm not covered by this practice. However, some of the information contained with in this sstm and in standard Test Method C may still be of use to preparing other test specimen shapes. Formerly under the jurisdiction of Committee D18 on Soil and Rock, this standard was withdrawn in July in accordance with section D45443 such, it is not always possible to obtain or prepare rock core specimens that satisfy the desirable tolerances given in this practice.

Most commonly, this situation presents itself with weaker, more porous, and poorly cemented rock types and rock types containing significant or weak or both structural features.


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For these and other rock types which are difficult to prepare, all reasonable efforts shall be made to prepare a specimen in accordance with this practice and for the intended test procedure. However, when it has been determined by trial that this is not possible, prepare the rock specimen to the closest tolerances practicable and consider this to be the best effort Note 1 and report it as such and if allowable or necessary for the intended test, capping the ends of the specimen as discussed in this practice is permitted.

Best effort in surface preparation refers to the use of a well-maintained surface grinder, lathe or lapping machine by an experienced operator in which a reasonable number of attempts has been made to meet the tolerances required in this procedure. For curatorial issues that should be followed before and during specimen preparation refer to Practices D and to the asym test asgm in 2.

However, the requirements in the specific test standards in 2.

In addition, they are representative of the significant digits that generally should be retained. It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design.

The values stated in each system may not be exact equivalents; therefore, f4543 system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.


ASTM D, Test equipment Controls

Note, when mass measurements are added to determine densities or unit weights, add the following. However, the use of balances or scales recording pounds of mass lbm shall not be regarded as nonconformance with this 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. This document cannot replace zstm or experience and should be used in conjunction with professional judgement. Not all aspects of this practice may asfm applicable in all circumstances.

This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s many unique aspects.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Stay on Page Continue to Compass. Link to Active This link will always route to the current Active version of the standard.