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Results from the triaxial creep tests indicate that the relationship between steady creep rate of thenardite and deviatoric stress can be described with the Heard model. By combining the Kelvin model which reflects the primary creep property of rock with the Heard steady creep model, a Kelvin–Heard (K-H) creep model is constructed. However, the predicted curves from the K-H model are not in good agreement...
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