Potential Use of Volcanic Ash as Filler Material in Hot Mix Asphalt

Table 4

Physical properties of mineral fillers.

Property test	Test method	Result		Specification
		CSD	VA
600 μm	ASTM D242	100	100	100
300 μm		100	96	95–100
75 μm		100	83.3	70–100
Plastic index	BS 1377	NP	0.92	≤4
Gsa	ASTM D 854	2.68	2.44	—