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Open Access Research on segregation heave based on infrared thermal scan

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In order to study on frost heave of freezing soils in continuous-intermittent freezing mode,frost heave tests using frost susceptible silty clay were carried out with variation of time intervals and temperature amplitudes of boundary temperature.The authors acquired segregation temperature by using the technique of infrared thermal scan and analyzed the relation among segregation temperature,boundary temperature and segregation rate.The results indicate that segregation rate increases with the decreasing of segregation temperature,and then decreases in the cooling phase of boundary temperature.Segregation heave pauses with the increasing of segregation temperature because the segregation rate tended to zero quickly in the warming phase of boundary temperature.Based on the tests results,calculation method of segregation heave in continuous-intermittent freezing mode are proposed,the calculated results agree well with the measured results.
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Keywords: continuous-intermittent freezing mode; infrared thermal scan; segregation heave; segregation rate; segregation temperature

Document Type: Research Article

Publication date: February 15, 2015

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