1. AASHTO T 85-14, 2015. Standard method of test for specific gravity and absorption of coarse aggregate. AASHTO International, Washington D.C., United States.
2. Class F fly-ash-amended soils as highway base materials;Arora;J. Mater. Civ. Eng.,2005
3. ASTM C127-12, 2016. Standard test method for density, relative density (specific gravity), and absorption of coarse aggregate. ASTM International, Washington D.C., United States.
4. ASTM C128-15, 2016. Standard test method for relative density (specific gravity) and absorption of fine aggregate. ASTM International, Washington D.C., United States.
5. ASTM C1403-15, 2016. Standard test method for rate of water absorption of masonry mortars. ASTM International, Washington D.C., United States.