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Significance and Use
5.1 Specific heat is a basic thermodynamic property of all substances. The value of specific heat depends upon chemical or mineralogical composition and temperature. The rate of temperature diffusion through a material, thermal diffusivity, is a function of specific heat; therefore, specific heat is an essential property of rock and soil when these materials are used under conditions of unsteady or transient heat flow.
Note 1: 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. Agencies that meet the criteria of Practice are generally considered capable of competent and objective testing/sampling/inspection/etctesting. Users of this standard are cautioned that compliance with Practice does not in itself assure reliable results. Reliable results depend on many factors; Practice provides a means of evaluating some of those factors.
1.1 This test method covers the determination of instantaneous and mean values of the specific heat of rock and soil.
1.2 This test method employs the classical method of mixtures, which involve procedures and an apparatus that are simpler than those generally used in scientific calorimetry, but with an accuracy that is adequate for most rocks and soils. While this test method was developed for testing rock and soil, it can be adapted to measure the specific heat of other materials.
1.3 The testing procedure provides an instantaneous specific heat over temperatures ranging from 25 to 300°C or a mean specific heat in that temperature range.
1.4 The test procedure is limited to dry specimens of soil and rock.
1.5 Units—The values stated in SI units are to be regarded as the standard. No other units of measurements are included in this standard.
1.6 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice .
1.6.1 The procedure used to specify how data are collected/recorded or calculated in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should be retained. 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. It is beyond the scope of this standard to consider significant digits used in analytical methods for engineering design
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D618 Practice for Conditioning Plastics for Testing
D653 Terminology Relating to Soil, Rock, and Contained Fluids
D3740 Practice for Minimum Requirements for Agencies Engaged in Testing and/or Inspection of Soil and Rock as Used in Engineering Design and Construction
D6026 Practice for Using Significant Digits in Geotechnical Data
E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or Process
E230 Specification and Temperature-Electromotive Force (EMF) Tables for Standardized Thermocouples
ICS Number Code 93.020 (Earth works. Excavations. Foundation construction. Underground works)
UNSPSC Code 11111501(Soil)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D4611-16, Standard Test Method for Specific Heat of Rock and Soil, ASTM International, West Conshohocken, PA, 2016, www.astm.orgBack to Top