This research work is aimed to evaluate the suitability of cement kiln dust for
stabilization of expansive clay soil in Coimbatore. The laboratory work involved index
properties to classify the soil sample. The preliminary investigation of the soil shows that it
belongs to CH class of soil in the BIS soil classification system. Soils under this class are
generally of poor engineering use. Atterberg limits, free swell, free swell index, compaction,
UCS and CBR tests were used to evaluate properties of stabilized soil. The soil was stabilized
with cement kiln dust in stepped concentration of 5%, 10%, 15%, 20%, 25% and 30% by dry
weight of the soil. Analysis of the results shows that high improvement on the geotechnical
properties of cement kiln dust stabilized soil. Cement kiln dust reduces plasticity index, swelling
and MDD with an increase in OMC, UCS and CBR with all higher cement kiln dust contents.
From this study it was found out that cement kiln dust stabilized soil meet the minimum
requirement of IRC pavement specification for use as a sub-grade material in road construction.
Control of acid mine drainage from an abandoned mine in Morocco by using cement kiln dust and fly ash as amendments