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Publication Information

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Title: Locally available aggregate and sediment production

Author: Foltz, Randy B.; Truebe, Mark;

Date: 2003

Source: In: Eighth International Conference on Low-volume roads : June 22-25, 2003 : Silver Legacy Hotel and Conference Center, Reno, Nev. Transportation research record no. 1819(2). Washington, D.C.: National Academies of Science, Transportation Research Board: 185-193

Publication Series: Miscellaneous Publication

Description: Selection of suitable locally available materials to build strong and durable roads with aggregate surfaces is desired to minimize road construction and maintenance costs and to minimize the detrimental effects of sedimentation. Eighteen aggregates were selected from local sources in Idaho, Oregon, South Dakota, and Washington State. Aggregate was placed in shallow metal frames and compacted to simulate a forest road. The levels of runoff and sediment from a high-intensity, long-duration simulated rainstorm were measured. The material tests selected for use in the study included ones that define the basic characteristics of the aggregate, along with a number of tests intended to predict susceptibility to erosion. Each of the tests was statistically evaluated to identify those that best predicted the perceived aggregate quality. The two best indicators of aggregate quality were the results of the sand equivalent test and the P20 portion of the Oregon air degradation test. The best indicator of either runoff or sediment production was the fraction passing the 0.6-mm sieve. Acceptable aggregates, both those of good quality and those of marginal quality, exhibited a 2-order-of-magnitude range in both runoff and sediment production.

Keywords: forest roads, aggregates, sedimentation, simulation

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Foltz, Randy B.; Truebe, Mark 2003. Locally available aggregate and sediment production. In: Eighth International Conference on Low-volume roads : June 22-25, 2003 : Silver Legacy Hotel and Conference Center, Reno, Nev. Transportation research record no. 1819(2). Washington, D.C.: National Academies of Science, Transportation Research Board: 185-193

 


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