1. ASTM D5/D5M-13 (2013) Standard test method for penetration of bituminous materials. ASTM International, West Conshohocken, PA. https://www.astm.org
2. ASTM D36/D36M-14e1 (2014) Standard test method for softening point of bitumen (ring-and-ball apparatus). ASTM International, West Conshohocken. https://www.astm.org
3. ASTM D4402/D4402M-15 (2015) Standard test method for viscosity determination of asphalt at elevated temperatures using a rotational viscometer. ASTM International, West Conshohocken. https://www.astm.org
4. ASTM D2493/D2493M-09 (2009) Standard viscosity-temperature chart for asphalts. ASTM International, West Conshohocken. https://www.astm.org
5. ASTM D7175-15 (2015) Standard test method for determining the rheological properties of asphalt binder using a dynamic shear rheometer. ASTM International, West Conshohocken. https://www.astm.org