1. AASHTO. (2004). “Standard method of test for moisture-density relations of soils using a 4.54-kg (10-lb) rammer and a 457-mm (18-in.) drop.” T 180-01 Washington DC.
2. AASHTO. (2003). “Standard method of test for the California Bearing Ratio.” T 193-99 Washington DC.
3. ASTM. (2003). “Standard specification for coal fly ash and raw or calcined natural pozzolan for use in concrete.” C618 West Conshohocken PA.
4. ASTM. (2000). “Standard test methods for liquid limit plastic limit and plasticity index of soils.” D4318 West Conshohocken PA.
5. Class F Fly-Ash-Amended Soils as Highway Base Materials