Keywords : Slake durability
Engineering and Technology Journal,
2011, Volume 29, Issue 4, Pages 725-735
This study deals with durability characteristics and unconfined compressive
strength of clayey soil stabilized with lime. The tests comprises of unconfined
compressive strength for samples stabilized with the optimum lime percent (4%),
and subjected to cycles of the wet-dry, dry-wet and freeze-thaw durability tests as
well as, long-term soaking and slake tests.
The results indicated that, the efficiency of the lime in the improvement of
unconfined compressive strength of clayey soil is of negative effect in the long
term durability periods The wetting-drying cycles showed greater reduction in
unconfined compressive strength than drying-wetting cycles, while the volume
change of samples which subjected to drying at first, was greater than those
conducted with wetting. On the other hand, freezing-thawing cycles causes a
decreasing in the unconfined compressive strength values, and the reduction ratio
was greater than wetting and drying cases. But, during soaking tests it was found
that at early soaking periods, the lime stabilized samples continuously gaining
strength, but beyond this the strength decreased with increasing soaking period.
Finally, the stabilized samples with (4 and 6%) lime becomes more durable
against the cycles of wetting and drying.