Abstract
In the Pneumatic Flow Mixing Method, dredged soil is mixed with chemical binder in a pipeline during transporting by compressed air. In some applications, the stabilized soil is temporary placed at provisional site, and is excavated and reclaimed at the final site. In the cases, the stabilized soil in which the chemical reaction has already proceeded is disturbed during the excavation and transportation processes, which cause considerable decrease in the strength. It is important to investigate the soil disturbance effect for its further applications. The authors investigated the soil disturbance effect on the mechanical properties of cement stabilized soil. The unconfined compression tests were performed on three types of laboratory mixed cement stabilized Kaolin clay; stabilized soil without disturbance and disturbed after 3 or 7 days curing. The study has revealed that the soil disturbance influenced the stress - stain behavior of the soils considerably. In this paper, the soil disturbance effect is presented as well as the microscopic view of the stabilized soils.
