2.2.3 Unconfined compression tests
Unconfined compressive strength tests on compacted specimens were
conducted according to ASTM D2166 (2000) on the chosen soil sample with
various percentage of hydrated lime. Soil samples were cured in plastic
bag to prevent moisture change. To prepare the samples for the
unconfined compression test, the samples were remolded according to the
field dry density derived from the compaction test (1.56 g/cm3) and the
natural moisture content (18.682%). For each type of mixtures, the
unconfined compressive strength value was obtained as the average of two
trials of unconfined compression tests.