Linear thermal expansion of ice
Butkovich, Theodore R.
Research ReportSummary: Experiments were conducted on natural and artificial single ice crystals, commercial ice, snow-ice, and a glacial single crystal at temperatures from 0°C to -30°C to determine the effect of orientation on the linear thermal expansion coefficients. The orientation of the c-axis, the type of ice (whether single or polycrystalline), and the grain size did not appreciably affect the values of the coefficient; ice was practically isotropic with respect to thermal expansion at the temperatures tested. There was a steady decrease of the expansion coefficient with succeeding measurement on the same specimen, a phenomenon attributable to slow annealing. The ratio of the specific heat at constant pressure to that at constant volume 1.030 from 0°C to -30°C. Gruneisen’s constant was found to be about 0.78 and independent of temperature. An equation expressing the average coefficient of linear thermal expansion of ice of any type or orientation is presented.
U.S. Army Snow, Ice, and Permafrost Research Establishment.Engineer Research and Development Center (U.S.)
Ice; Ice crystals; Ice thermal properties; Snow ice; Thermal expansion; Coefficients
Research report (U.S. Army Snow
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