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Thermal conductivity was described using a modified geometric mean model, and the specific heat capacity was estimated by a series model. The correlations can predict the thermal conductivity and specific heat capacity of granite with estimated errors below 10% and 5%, respectively. Thermal ...
Empirical correlations were proposed to predict the thermal conductivity and the specific heat capacity of granite as a function of porosity and water content. Thermal conductivity was described using a modified geometric mean model, and the specific heat capacity was estimated by a series model. The...
3.2. Specific heat capacity The specific heat capacity of the granite samples was measured in a temperature range from 25 °C to 1000 °C (Fig. 5). The values for quartz and plagioclase were found in literature whereas the cp of muscovite was calculated by using a Voigt-Reuss-Hill mixture...
A metamorphic rock that consists primarily of talc with varying amounts of other minerals such as micas, chlorite, amphiboles, pyroxenes, and carbonates. It is a soft, dense, heat-resistant rock that has a high specific heat capacity.
See Eq. 1 for the specific expression). The naturally cooled sample is placed in the furnace for cooling; however, due to the thermal stress the sample is subjected to for a prolonged period of time, the sample is thermally expanded and is finally cooled to room temperature. The sample ...
However, in a previous study, some scholars found that when the loading rate increased to a specific value, the DTS of saturated rock (i.e., sandstone and coal) eventually exceeded that of dry rock; that is, the weakening effect of water was offset by the strengthening effect, and the ...
Typically, the cumulative specific dissipation energy tends to increase with an increasing number of impacts. Before the macro-destruction of the sample, the growth rate remains relatively stable, and the specific energy of increase is less than 0.1 J cm–3, with the dissipation energy increasing ...
Rock typeSpecific gravityPorosity (%)Specific heat capacity (J/(kg K))RQD (%) VK 2.53 5.62 0.88 90 HK 2.52 3.49 0.94 63 Granite 2.66 0.13 0.64 87 3.4. Mechanical properties tests The mechanical properties of the samples were investigated by conducting UCS and BTS tests. UCS test is a po...
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