1. AASHTO Guide for Design of Pavement Structures;AASHTO,1993
2. Frozen Ground Engineering;Andersland,2004
3. Standard test method for particle-size analysis of soils;ASTM,2003
4. Standard test method for use of the dynamic cone penetrometer in shallow pavement applications;ASTM,2009
5. Standard test methods for liquid limit, plastic limit, and plasticity index of soils;ASTM,2010