Variations of Strength,Resistivity and Thermal Parameters of Clay after High Temperature Treatment |
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| Authors: | Qiang?Sun Email author" target="_blank">Weiqiang?ZhangEmail author Yuliang?Zhang Lining?Yang |
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| Institution: | 1.School of Resources and Geosciences,China University of Mining and Technology,Xuzhou, Jiangsu Province,P.R. China |
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| Abstract: | This paper reports the variations of strength, resistivity and thermal parameters of clay after high-temperature heating. Experiments were carried out to test the physical properties of clay heated at temperatures ranging from room temperature to 800°C in a furnace. The experiment results show that below 400°C the uniaxial compressive strength and resistivity change very little. However, above 400°C, both increase rapidly. At a temperature under 400°C, the thermal conductivity and specific heat capacity decrease significantly. The thermogravimetric analysis (TG) and differential scanning calorimeter (DSC) test indicate that a series of changes occur in kaolinite at temperatures from 400 to 600°C, which is considered the primary cause of the variation of physical and mechanical properties of clay under high temperatures. |
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