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

Table 3

Chemical compositions of volcanic ash.

Composition	Content (%)
SiO2	55.2
Al2O3	20.85
Fe2O3	5.48
CaO	1.9
MgO	0.42
Na2O	5.46
K2O	2.12
MnO	0.18
P2O5	0.1
TiO2	0.18
H2O	2.21
LOI	5.24