1. AASHTO R 68, 2015. Standard practice for preparation of asphalt mixtures by means of the Marshall apparatus. American Association of State Highway and Transportation Officials.
2. AASHTO T 331, 2021. Standard method of test for bulk specific gravity (Gmb) and density of compacted asphalt mixtures using automatic vacuum sealing method. American Association of State Highway and Transportation Officials.
3. ASTM D6752, 2009. Standard test method for bulk specific gravity and density of compacted bituminous mixtures using automatic vacuum sealing method. American Society for Testing and Materials.
4. ASTM D6927, 2015. Standard test method for Marshall stability and flow of asphalt mixtures. American Society for Testing and Materials.
5. ASTM D7063, 2005. Standard test method for effective porosity and effective air voids of compacted bituminous paving mixture samples. American Society for Testing and Materials.