United States Department of Transportation
i
Sprinkle Treatment experimental project construction and first-year evaluation.
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1986-07-01
[PDF-3.24 MB]
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Abstract:The Department's Research Section recognized the need for alternatives to the friction course materials. One such alternative which appeared promising was Sprinkle Treatment. Sprinkle Treatment, initiated in 1977 by the Federal Highway Administration in under the auspices of Demonstration Project No. 50, was developed in England where it has been widely utilized to provide skid resistant wearing surfaces. Sprinkle Treatment is the application of a properly graded, pre-coated, non-polishing aggregate to a hot asphaltic concrete wearing course immediately behind the paving machine. The "sprinkled" chips are embedding costly imported non-polishing aggregates only in the wearing course surface, rather than using it in the entire mix, a substantial conservation of materials and cost could be realized.
The success of Demonstration Project No. 50 and the Department's problems with open-graded friction course led to the approval of an experimental project to examine Sprinkle Treatment. In May 1984 a plan change was issued to an ongoing contract to include the use of the Sprinkle Treatment process for approximately 3.0 miles on La. 20 from Chacahoula to Schriever. An agreement with the Demonstration Projects Division of FHWA provided for the sued of a Bristones Mk V chip spreader. This report documents the construction and presents the first-year performance data of the Sprinkle Treatment field trial.
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