Modification of Lime-Fly Ash-Crushed Stone with Phosphogypsum for Road Base

Table 1

Chemical properties of materials used.

Constituent (%)	Lime	FA	PG
SiO2	1.59	44.40	7.27
Al2O3	0.79	24.90	0.56
CaO	64.40	2.09	26.60
Fe2O3	0.49	3.10	0.28
MgO	7.43	0.58	0.17
K2O	0.12	1.10	0.39
SO3	0.76	0.93	36.40
P2O5	0.01	0.12	1.95
LOi	24.30	21.49	26.00
Loss	24.27	9.80	25.95