1. ASTM D 5: Standard Test Method for Penetration of Bituminous Material, Volume 04.03. Annual Book of ASTM Standards, American Society for Testing and Material (ASTM), West Conshohocken (1986)
2. ASTM D 36: Standard Test Method for Softening Point of Bituminous Material, Volume 04.03. Annual Book of ASTM Standards, American Society for Testing and Material (ASTM), West Conshohocken (1986)
3. ASTM D 70: Standard Test Method for Density of Semi-Solid Bituminous Materials (Pycnometer Method). American Society for Testing and Materials (ASTM), West Conshohocken (1997)
4. ASTM D 113: Standard Test Method for Ductility of Bituminous Materials. United States: American Society for Testing and Materials (1999)
5. (ASTM), USA. ASTM D 4402: Standard Test Method for Viscosity Determinations of Unfilled Asphalts Using the Brookfield Thermo sell Apparatus, Volume 04.03. Annual Book of ASTM Standards, American Society for Testing and Material (ASTM), West Conshohocken (1987)