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Abstract: Thermal conductivity, thermal diffusivity and specific heat are investigated for a granite rock sample from a deep borehole in central Portugal. Thirty-three samples were divided into two groups based on the degree of metasomatic alteration. It was found that the average thermal conductivity for the samples in the group comprising the less altered samples was 2.90 ± 0.26 W/m K, and for the more altered samples, the average value was 2.95 ± 0.19 W/m K, so no significant difference was observed between the thermal conductivities in the two groups. There was also no significant difference observed for the thermal diffusivities, thermal capacities, or specific heat capacities. It was concluded that the metasomatic alteration did not influence the thermal properties of the samples.

Reference: Submitted to: Energy for Sustainability 2015, Sustainable Cities: Designing for People and the Planet, Coimbra, Portugal, May 14-15, 2015