| Summary: | Fly ash, also known as the residues of fine particles that formed with flue
gases is a by-product which can be found at thermal power stations. There are two
types of fly ash, which are Type C and Type F. This material can be used in
construction of buildings or infrastructures as a new alternative to reduce material
costs if the material can achieve an adequate performance as a construction material.
With the use of fly ash, Portland cement usage can be reduced hence it promotes
sustainable development. The aim of this study are to evaluate the engineering
properties and adequacy of stabilized fly ash Type C as an admixture to stabilize sub�grade soil. Several past researches are reviewed to study the chemical and physical
properties of stabilized fly ash Type C and they conducted various tests such as
unconfined compression test, California Bearing Ratio (CBR) test, and resilient
modulus test on the soil specimens containing stabilized fly ash Type C material. It
was found that fly ash Type C with almost optimum water content (less than 5%)
significantly increase the compressive strength, CBR value and resilient modulus of
stabilized soil when mixed. Therefore, these researches showed that fly ash-stabilized
material (FASM) significantly improve bearing resistance and stiffness of sub-grade
in a road pavement.
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