Effect of Hydrated Lime Stabilization on Consistency, Shear Strength and
Compaction Properties of Sulaimani CL Soil, Northern Iraq
Cohesive soils present difficulties in construction projects because of
usually contain expansive clay minerals. However, the engineering
properties of cohesive soils can be stabilized by using various
techniques. The aim of the research is to discover the influences of
using hydrated lime on the consistency, compaction, and shear strength
properties of clayey soil samples from Sulaimnai city, northern Iraq.
The proportions of added hydrated lime are 0%, 2.5%, 5%, 7.5% and
10% to the natural soil sample. The results yielded considerable
effects of hydrated lime on the engineering properties of the treated
soil sample and developed its strength. The soil’s liquid limit,
plasticity index, and optimum moisture content were decreased with the
increase of hydrated lime percent. While the soil’s plastic limit and
maximum dry density were increased. Also, the soil’s unconfined
compressive strength was significantly increased with the hydrated lime
content increase. The oedometer test results produced a notable decrease
in the compressibility characteristics of the lime-treated soil sample.
Hence, hydrated lime is successfully contributed and can be considered
as an effective material to improve the strength, compressibility and
consistency properties of the cohesive soils in Sulaimani city.