The following conclusion can be drawn from this study are as follows:
The agro waste (Palm oil fuel ash) used in in this study is giving good results and improving the properties of dispersive soil.
Using 3% lime alone the unconfined compressie strength of the soil is increased by 7.6 times for a curing period of 28 days.
Using 8% POFA as soil stabilizer increases the unconfined compressive strength by 2.98 times for a curing period of 28 days.
Using 2% lime and 12% POFA the unconfined compressive strength is increased by 10.11 times for a curing period of 28 days.
Use of palm oil fuel ash as stailizer decreases the cost of stabilization and is effective for long term stabilization of soil.