1. AASHTO T49 (2014). American Association of State Highway and Transportation Official, Standard method of test for penetration of bituminous materials, Washington, D.C.
2. ASTM D5 (2013). American Society for Testing and Materials, Standard test method for penetration of bituminous materials, Washington, D.C.
3. ASTM D6926 (2010). American Society for Testing and Materials, Standard practice for preparation of bituminous specimens using marshall apparatus, Washington, D.C.
4. ASTM D6927 (2015). American Society for Testing and Materials, Standard test method for Marshall stability and flow of asphalt mixtures, Washington, D.C.
5. ASTM D6931 (2012). American Society for Testing and Materials, Standard test method for indirect tensile (IDT) strength of bituminous mixtures, Washington, D.C.