Abstract:
Soil stabilization is one of the ground improvement methods for treating weak soils. Unfit
for engineering purpose and makes them suitable for construction purposes. However,
there is a need to look toward different industrial waste materials that are being
produced in huge quantities and it used for the stabilization works. The expansive soil has
a serious threat as it possesses seasonal variations of moisture content. It leads to severe
damages to the pavements and foundations of the structure. In order to minimize this
problem, it needs to be stabilized.
Therefore, the objective of this study was a comparative study on the stabilization of
expansive soil using waste ceramic dust and limestone for weak subgrade soil for road
construction. For the achievement of this study different materials were collected from
Ambo town areas and different laboratory tests were designed and conducted. The
laboratory investigation has been made to study the suitability of waste ceramic dust,
limestone, and ceramic dust-limestone dust to improve the engineering properties of soil.
The experimental tests were conducted to determine moisture content, specific gravity,
grain size analysis, atterberg limits, proctor test, free swell test and California bearing
ratio tests. The test procedures based on AASHTO, ASTM and IS laboratory test
standards.
In this investigation, the engineering properties of the soil was determined and the
strength characteristics of the soil sample treated with waste ceramic dust & limestone
was observed by various percentage of waste ceramic dust from 5 to 25% at an increment
of 5% and limestone from 0 to 10% at an increment of 2% by different weight ratio was
mixed with soil sample. The comparison limestone stabilized with soil samples gave
higher CBR values than waste ceramic dust. For the combination, it was established that
replacing optimum 20% WCD and 8% limestone has resulted in better results than the
performance of each individual and the soil mixed with limestone -waste ceramic dust
was more appropriate and suitable for weak subgrade construction. In generally,
expansive soils causes a serious problems on structures, so that it should be avoided or
treated properly. This review provides the disposal problem of waste ceramic can be
effectively used in stabilization works for weak subgrade soil.
