5. Conclusion
On the basis of the test results, the following conclusions can be
drawn:
- The CL soil’s Liquid limit and plasticity index decrease
substantially, whereas plastic limit increases with hydrated lime
content increase.
- The CL soil’s maximum dry density is found to be increased, while the
optimum water content is found to be decreased with an increase in the
hydrated lime content.
- A significant increase of the CL soil’s unconfined compressive
strength value was found with an increase in hydrated lime content,
the increase peak point was found at the optimum hydrated lime
content.
- The obtained coefficient of determination, R2, for
the established relationships between the CL soil geotechnical
characteristics and the used hydrated lime content, indicate that
these expressions are suitable for the determination of the compaction
and strength characteristics for CL soil treated with various
percentages of hydrated lime.