1. Designation T307-99: Determining the Resilient Modulus of Soils and Aggregate Materials;AASHTO,2003
2. Designation M-145: Classification of Soil and Soil-Aggregate Mixtures for Highway Construction;AASHTO,2008
3. Constitutive model for partially saturated soils;Alonso;Géotechnique,1990
4. Guide for mechanistic-empirical design of new and rehabilitated pavement structures;ARA, Inc., ERES Consultants Division,2004
5. Designation: D422-63: Standard Test Method for Particle-Size Analysis of Soils;ASTM,2007