ASTM D4543-04

    Standard Practices for Preparing Rock Core Specimens and Determining Dimensional and Shape Tolerances


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    1. Scope

    1.1 This practice specifies procedures for laboratory specimen preparation and determining the length and diameter of rock core specimens and the conformance of the dimensions with established standards.

    1.2 Rock is a complex engineering material which can vary greatly as a function of lithology, stress history, weathering, and other natural geologic processes. As such, it is not always possible to obtain or prepare rock core specimens which satisfy the desirable criteria given in this practice. Most commonly, this situation presents itself with weaker, more porous, and poorly cemented rock types and rock types containing significant structural features. For these and other rock types which are difficult to prepare, all reasonable efforts shall be made to prepare a sample in accordance with this practice. However, when it has been determined by trial that this is not possible, prepare the rock specimen to the highest standard practicable and consider this to be the best effort and report it as such, with all appropriate size and dimensional measurements reported as in Section 6. For curatorial issues refer to Practices D 5079.

    1.3 This practice also prescribes tolerance checks on the straightness of the elements on the cylindrical surface, the flatness of the end bearing surfaces, and the perpendicularity of the end surfaces with the axis of the core.

    1.4 The requirement for specifying the moisture condition of the test specimen at the time of the test is also stated.

    1.5 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only.

    1.6 For definitions of terms relating to rock specimen preparation and measurement refer to Terminology D 653.

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

    1.8 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgement. Not all aspects of this practice may be 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. The word "standard" in the title of this document means only that the document has been approved through the ASTM consensus process.


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

    ASTM Standards

    C170 Test Method for Compressive Strength of Dimension Stone

    C617 Practice for Capping Cylindrical Concrete Specimens

    D653 Terminology Relating to Soil, Rock, and Contained Fluids

    D2113 Practice for Rock Core Drilling and Sampling of Rock for Site Exploration

    D2216 Test Methods for Laboratory Determination of Water (Moisture) Content of Soil and Rock by Mass

    D2936 Test Method for Direct Tensile Strength of Intact Rock Core Specimens

    D3740 Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction

    D4753 Guide for Evaluating, Selecting, and Specifying Balances and Standard Masses for Use in Soil, Rock, and Construction Materials Testing

    D5079 Practices for Preserving and Transporting Rock Core Samples

    D6026 Practice for Using Significant Digits in Geotechnical Data

    D7012 Test Methods for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures

    D7070 Test Methods for Creep of Rock Core Under Constant Stress and Temperature


    ICS Code

    ICS Number Code 93.020 (Earth works. Excavations. Foundation construction. Underground works)

    UNSPSC Code

    UNSPSC Code 60104402(Rock specimens)


    Referencing This Standard
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    DOI: 10.1520/D4543-04

    Citation Format

    ASTM D4543-04, Standard Practices for Preparing Rock Core Specimens and Determining Dimensional and Shape Tolerances, ASTM International, West Conshohocken, PA, 2004, www.astm.org

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