Relationship of forest road aggregate test properties to sediment production
Foltz, R.B.; Evans, G.L.; Truebe, M. 2000.
Relationship of forest road aggregate test properties to sediment production.
In: Flug, M.; Frevert, D.; Watkins, Jr., D.W., eds.,
Proceedings from the Conference on Watershed Management & Operations Management 2000;
2000 June 20-24; Fort Collins, CO.
Reston, VA: American Society of Civil Engineers: 10 p.
Keywords: aggregate, road
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Available to purchase: PDF (70 kB) ASCE
Abstract:
This study investigated the sediment production from various aggregates.
The objectives of this study were
1) to evaluate the erodibility of a range of aggregate surfacing
materials and relate it to standard and non-standard specification tests,
2) provide a means of specifying aggregate materials and understand the sedimentation implications, and
3) to provide a relative ranking of the erosive potential of aggregates.
To accomplish this,
eighteen aggregates from the Pacific Northwest were selected based on quality and
geologic parent material. A suite of aggregate specification tests were performed to
characterize each aggregate. The sedimentation from a simulated rain storm on a plot
representing a freshly constructed road section was measured. Traffic was applied and the
sediment production from a simulated storm was again measured. The two best indicators of
aggregate quality were Sand Equivalent and Oregon Air P20 test results. Knowledge of
whether an aggregate was classified as good or marginal was not sufficient to estimate
sediment production. The best indicator of sediment production was the percent passing the number 30 sieve.
Moscow FSL publication no. 2000a
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