Abstract:
Huge quantity of bottom ash is
generated as a by-product of burning of coal
when generating electricity at Norochcholai
power plant. However, only very small quantity
of bottom ash is used by the industry to produce
concrete blocks and remaining is stockpiled at
Norochcholai creating an environmental
pollution. As such, possibility to utilize bottom
ash for road embankment and pavement
construction was studied in this research study.
Different percentages of bottom ash were mixed
with poor quality soils, which were not satisfied
the filling material requirements in the
specification, to improve the engineering
characteristic of soils. Based on the results, it
can be noted that by blending 30% of bottom
ash with poor quality soil, it can be used as an
embankment Type 1 and Type 2 filling material.
Further, it was found that by adding 10% of
cement to soil-bentonite mixture, it can be
utilized as a subbase material. Hence, it can be
concluded that bottom ash can be used
successfully as a mechanically stabilizer to
improve the engineering characteristics of poor
quality soil.
