Effect of aggregate quality on sediment production from a forest road

Foltz, R.B.; Trube, M.A. 1995. Effect of Aggregate Quality on Sediment Production from a Forest Road. In: Proceedings of the Sixth International Conference on Low-Volume Roads. Vol. 1, p. 49-57. Transportation Research Board, National Research Council, Washington, DC.

Keywords: road, aggregate

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Abstract: Aggregate is placed on forest roads in wet climates to provide structural support for traffic and in dry climates to reduce sediment production caused by precipitation. In both climates aggregate of suitable quality is often not readily available. The substitution of poorer-quality aggregate can cause greater amounts of sediment than that produced by good-quality aggregate. To measure the differences in sedimentation rates, the Forest Service of the U.S. Department of Agriculture conducted a sediment study using two aggregate qualities. The study was conducted using natural rainfall and logging truck traffic on an aggregate-surfaced road during the winters of 1992 and 1993 in western Oregon and using simulated rainfall following the winter of 1993. The results showed that the quality of the aggregate made a notable difference in sediment production.

Moscow FSL publication no. 1995b