Closure to 'Transitional behaviors in well-graded coarse granular soils' by Yang Xiao, M. R. Coop, Hong Liu, Hanlong Liu, and Jingshan Jiang

摘要

The discussers were concerned about the soil type for the transitional behavior, which was first found for the gap-graded fine sand by Martins et al. (2001). This behavior was then widely observed in other soils, e.g., the gap-graded sand (Ferreira and Bica 2006), well-graded silty clay (Nocilla et al. 2006), and well-graded sands (Altuhafi et al. 2010; Altuhafi and Coop 2011). These soils (including clay, fines, and sands) belong to the fine granular soils with the particle size smaller than 2 mm. However, the work in the original paper obviously illustrated that the gravelly soils could also exhibit such transitional behavior because the critical-state line (CSL) was dependent on the initial void ratio. In order to validate this point, the drained triaxial compression tests on rockfill materials performed by Li (2016) were reanalyzed.