Evaluation of one-dimensional freezing behavior for ice-rich sandy soil

Abstract

This paper evaluates a methodology that enables one-dimensional freezing to make a homogeneous frozen soil specimen. Numerical analyses that simulate one-dimensional freezing are conducted, considering the phase change of pore water. After evaluating the applicability of the numerical analysis model, the effects of geotechnical characteristics on the freezing behavior of ice-rich sandy soil are evaluated through parametric studies. In addition, a nonlinear regression model is proposed that can predict the time required for complete freezing of saturated soil. According to the results from nonlinear regression analysis, the model demonstrates reliable accuracy (R-2 = 0.998) in predicting the amount of time required for complete freezing, even with data from testing datasets not used in the developing stage. (C) 2018 Elsevier Ltd. All rights reserved.