Stabilization Selection Guide for Aggregate - Illinois Department of ...

Mechanical Stabilization
Slash and Logs/Corduroy One of the simplest, most natural, and (excluding labor) economical
methods of stabilization is to incorporate slash and tree limbs into a
debris mat. This method is often used on peat (Phukan 1982), and
was formerly used as a lightweight fill/base with a soil-wear surface
for timber-access roads in the Tongass National Forest (Brunette
1993). Slash can be placed at angles to the direction of travel,
or ruts can be filled with logs, and covered with angled smaller
branches. Slash can be used in combination with other stabilization
methods when large quantities of fill material are not available
within a reasonable haul distance. Typically wood/corduroy is used
in combination with a geosynthetic as shown in figure 3.6.
Figure 3.6—Corduroy atop geosynthetic, Australia (Gordon Keller).
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