Example N01.3: Use Soil Stabilization

In this subsection, the alternative of introducing lime stabilized subgrade (LSS) before placing aggregate base is examined. Specifically, an LSS layer of 1.0 ft thick is placed between AB and SG. The HMA thickness required is expected to be reduced.

The screen shot of the project input screen and the Monte Carlo simulation results are shown below. As shown in the screen shot, the UCS strength of the LSS layer is assumed to be 300 psi.

As shown above, a 1.0 ft of LSS can reduce the HMA thickness required by 0.10 ft (from 1.05 ft to 0.95 ft) in this particular case.