Structural Strength Deterioration Characteristics and a Model of Undisturbed Loess under the Action of Wetting and Freeze-Thaw Cycles

Figure 19

Structural strength of undisturbed loess (note: I is the straight line fitting the end of the compression curve, II is the tangent of the point of maximum curvature, III is the horizontal straight line passing the maximum curvature point, and IV is the angle bisector of straight lines II and III.).