| dc.description.abstract | Soil stabilization refers to the process of changing soil properties to improve
strength and durability. Stabilization is the process of blending and mixing materials with a
soil to improve certain properties of the soil. The process may include the blending of soils
to achieve a desired gradation or the mixing of commercially available additives that may
alter the gradation, texture or plasticity, or act as a binder for cementation of the soil.
Additive stabilization is achieved by the addition of proper percentages of fly ash, cement,
lime, or combinations of these materials to the soil. For this thesis soil mixed with fly ash
and the quantities of fly ash added with clay soil which is 5%, 10% and 15%. Fly ash is
classified according to the type of coal from which the ash was derived. Class C fly ash is
derived from the burning of lignite or sub bituminous coal and is often referred to as “high
lime” ash because it contains a high percentage of lime. Class C fly ash is self-reactive or
cementitious in the presence of water. The selection of type and determination of the
percentage of additive to be used is dependent upon the soil classification and the degree of
improvement in soil quality desired. Generally, soil strength is a complicated geotechnical
concept to simplify due to the inherent complexities of different soil types. Frictional
strength, cohesive strength, and pore water pressure relationships are all integral to the
effective strength determination of a soil but are only easily identified in the most select
granular materials. The result of experimental show the strength of soil is increasing when
increased percentage of fly ash. The best value of percentage is 15% after carrying out the
experiment such as Atteberg Limit, Compaction, Unconfined Compressive and CBR Test.
As a conclusion, soil stabilization is used to increase the bearing capacity of soils, for
example when building embankments because fly ash is one such material with the
potential to work well as a binding agent | en_US |
