FROST SUSCEPTIBILITY PROPERTIES OF SOMA-B FLY-ASH

This paper assesses the effect of freeze-thaw properties of compacted fly ash specimens likely to affect its use as fill material, on the ba sis of laboratory investigations conducted on Soma-B Thermal Power pla nt ashes in western Turkey. Test specimens were subjected to compactio n. Changes in strength with curing time and freeze-thaw cycles are mea sured using unconfined compression tests, and increases in strength wi th curing time and the number of freeze-thaw cycles were observed. The findings suggest that compacted Soma-B fly ash could serve as fill ma terial, particularly over weak subgrades with no negative environmenta l effects, provided that the degree of saturation of the compacted fly ash embankment is at a specific value.