Geotechnical Properties of Wood Ash-Based Composite Fine-Grained Soil

Table 2

Chemical composition of wood ash.

Constituents	% in wood ash
CaO	29.80
MgO	5.25
K2O	9.55
Fe2O3	0.95
Na2O	7.50
SiO2	25.8
Al2O3	14.72
P2O5	2.33
TiO2	0.70
SO3	0.70
Loss on ignition, LOI	2.70