| Summary: |
Soil stabilization using chemical additives might be influenced strongly by the moulding moisture content
for the compaction. In this paper, the result of a laboratory investigation on the application of the pozzolanic mortar
column. The mortar was made of the sand and the binder microsilica and microcalcium mixtures from fine rice husk
ash and carbide waste. The water to binder ratio was The primary objective of this paper is to study the effect of
moisture content on the behaviour of the unconfined compressive strength of the clay-improved with SiCC mortar.
The specimens were prepared in optimum – wet moisture content regime that range from 30% to 55%. The
specimen size was 100 mm in diameter and 120 mm in height. The diameter of the SiCC column was 25.4 mm (1
in). The unconfined compression test was performed for each mixture after 1, 3, 7, 14 and 28 days of curing. In
general, it can be concluded that the unconfined compressive strength decreased with increasing of soil moisture
content for both specimen group. The specimen with SiCC column at soil moisture near OMC have the highest
unconfined compressive strength. However, at a high soil moisture content, the strength development of the SiCC
column supported soil was higher than the specimen at near OMC state. The unconfined compressive strength
increased corresponding curing time for all soil moisture states. The results confirmed that the strength development
of SiCC column supported soil depends on the soil moisture content surrounding column and curing time.
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