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Standard Test Method for Determination of Thermal Conductivity of Soil and Rock by Thermal Needle Probe Procedure
| 분야 | 04.08 : 토양, 석재 (Ⅰ) |
|---|---|
| 적용범위 | 1.1?This test method presents a procedure for determining the thermal conductivity (λ) of soil and rock using a transient heat method. This test method is applicable for both intact specimens of soil and rock and reconstituted soil specimens, and is effective in the lab and in the field. This test method is most suitable for homogeneous materials, but can also give a representative average value for non-homogeneous materials. 1.2?This test method is applicable to dry, unsaturated or saturated materials that can sustain a hole for the sensor. It is valid over temperatures ranging from <0 to >100°C, depending on the suitability of the thermal needle probe construction to temperature extremes. However, care must be taken to prevent significant error from: (1) redistribution of water due to thermal gradients resulting from heating of the needle probe; (2) redistribution of water due to hydraulic gradients (gravity drainage for high degrees of saturation or surface evaporation); (3) phase change of water in specimens with temperatures near 0°C or 100°C. 1.3?Units?The values stated in SI units are to be regarded as the standard. No other units of measurements are included in this standard. Reporting of test results in units other than SI shall not be regarded as nonconformance with this standard. 1.4?All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026. 1.4.1?The procedures 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. Note 1:?This test method is also applicable and commonly used for determining thermal conductivity of a variety of engineered porous materials of geologic origin including concrete, Fluidized Thermal Backfill (FTB), and thermal grout. 1.5?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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
| 국제분류(ICS)코드 | 13.080.20 : 토양의 물리적 특성 |
| 페이지수 | 10 |
| Edition | 22ae1 |
| No. | 표준번호 | 표준명 | 발행일 | 상태 |
|---|---|---|---|---|
| 1 | ASTM D5334-22ae1 | Standard Test Method for Determination of Thermal Conductivity of Soil and Rock by Thermal Needle Probe Procedure | 2022-10-01 | 표준 |
| 2 | ASTM D5334-22a | Standard Test Method for Determination of Thermal Conductivity of Soil and Rock by Thermal Needle Probe Procedure | 2022-10-01 | 구판 |
| 3 | ASTM D5334-22a REDLINE | Standard Test Method for Determination of Thermal Conductivity of Soil and Rock by Thermal Needle Probe Procedure | 2022-10-01 | 구판 |
| 4 | ASTM D5334-22 | Standard Test Method for Determination of Thermal Conductivity of Soil and Rock by Thermal Needle Probe Procedure | 2022-01-01 | 구판 |
| 5 | ASTM D5334-14 REDLINE | Standard Test Method for Determination of Thermal Conductivity of Soil and Soft Rock by Thermal Needle Probe Procedure | 2014-06-01 | 표준 |
| 6 | ASTM D5334-14 | Standard Test Method for Determination of Thermal Conductivity of Soil and Soft Rock by Thermal Needle Probe Procedure | 2014-06-01 | 표준 |
| 7 | ASTM D5334-08 | Standard Test Method for Determination of Thermal Conductivity of Soil and Soft Rock by Thermal Needle Probe Procedure | 2008-07-01 | 구판 |
| 8 | ASTM D5334-05 | Standard Test Method for Determination of Thermal Conductivity of Soil and Soft Rock by Thermal Needle Probe Procedure | 2005-11-01 | 구판 |
| 9 | ASTM D5334-00(2004) | Standard Test Method for Determination of Thermal Conductivity of Soil and Soft Rock by Thermal Needle Probe Procedure | 2004-11-01 | 구판 |
| 10 | ASTM D5334-00 | Standard Test Method for Determination of Thermal Conductivity of Soil and Soft Rock by Thermal Needle Probe Procedure | 2000-06-10 | 구판 |
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