| Summary: |
A stabilized soil should be durable in which has ability to retain its integrity and strength
under service environmental condition. The determination of the durability properties of
the soils mixtures is a problem since it is difficult to simulate in laboratory the
detrimental action that is produced by weathering in the field. In this study, the durability
test was determined by resisntance to immersion test according to BS 1924 – 1990:
Section: 4.3. Two stabilised soils, clay and clayey-sand soils, with lime and rice husk as
mixtures were tested. The investigation results show, in general, the stabilised soil loses
the unconfined compressive strength subjected to the immersion. Loss in soil strength
was owing to water intrusion into the soil and the soil adsorbed the water. Adding of lime
and rice husk ash mixture is able to increase the resistance to immersion. Based on this
study, addition 6% lime and 12 % rice husk ash show a good performance in unconfined
compressive strength and durability. The laboratory test showed that the effect of
immersion is dependent on the level of strength of pozzolanic reaction achieved prior to
beginning of the period of soaking.
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