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https://hdl.handle.net/11681/5653| Title: | Measuring the thermal properties of cylindrical specimens by the use of sinusoidal temperature waves |
| Authors: | Hoekstra, P. (Pieter) Delaney, Allan J. Atkins, Ronald T. |
| Keywords: | Frozen soils Frozen ground Soil temperature Soil profiles Rocks Rock properties Rock tests Soils Soil properties Soil tests Thermal diffusivity Thermal measurements Thermal measuring instruments |
| Publisher: | Cold Regions Research and Engineering Laboratory (U.S.) Engineer Research and Development Center (U.S.) |
| Series/Report no.: | Technical report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 244. |
| Description: | Technical Report Abstract: An apparatus for measuring the thermal diffusivity of cylindrical specimens of soil and rock was constructed and tested. A cylindrical specimen 25 cm long with a diameter of 7.72 cm was used in the tests, but the basic design allows much versatility in adopting the specimen dimensions to the size of cores. The amplitude of the temperature wave used was about 1°C and the frequency of the wave was 2 cycles per hour. The results of tests on standard samples agreed well with values obtained by other investigators using different methods. Because the direction of the temperature gradient is constantly reversed, the method has advantages for specimens where water migration is a problem. Also, because of the small temperature differentials that can be used the method is suited for materials for which the thermal properties are temperature dependent, such as, for example, frozen ground in the temperature range from 0°C to -10°C. |
| Rights: | Approved for public release; distribution is unlimited. |
| URI: | http://hdl.handle.net/11681/5653 |
| Appears in Collections: | CRREL Technical Report |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| CRREL-Technical-Report-244.pdf | 912.87 kB | Adobe PDF |  View/Open |