Abstract:
Bottom ash is a waste generated from coal burning to used
as power for electricity generation causing problems of waste
area disposal and pollution to the environment. This research is
for realizing the benefits by proposing to improve the quality of
sandy soils by using bottom ash and cement as a backfill
materials and pavement materials. Experiments consisted of
unconfined compressive strength (UCS), California bearing ratio
(CBR), resilient modulus (Mr), and non-destructive testing using
vibration waves free-free resonance test (FRR) can used to assess
the strength of sandy soil, improve the quality and can used to
determine the properties of seismic modulus and Poisson's ratio.
The test results show that the P-wave and S-wave velocity,
including the seismic modulus, are consistent with the
compressive strength test results. Results show that 30 percent
bottom ash content replacement sandy soil provided maximum
strength, resilient modulus and California bearing ratio. Sandy
soil, improved by bottom ash and cement, was classified as "Soil
cement base" according to standard, DH-S. 204/2556,
Department of highway, Thailand