Abstract
Thermal properties of the soil gain great importance in engineering projects and situations where heat transfer may take place and affect the soil properties on the whole. Soil gets affected, for example, during laying of bituminous roads, airfield strips, gas or steam pipelines and/or hot water and cold gas lines in unfrozen grounds. In-situ determination of thermal properties of soil is not only time consuming, but in certain cases, costly. The purpose of this study is to understand the variation in thermal properties of virgin soil with addition of different carbonates like potassium carbonate, sodium carbonate and ammonium carbonate using laboratory based Lee’s and Charlton’s apparatus. It is observed that increase in density of soil with any of the three chemicals increases the thermal conductivity, however with the selected chemical the increase is limited to a certain percentage addition after which it does not show any changes as compared to virgin soil.
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