Performance of Free Draining Base Course at Fort Campbell, Kentuckyby William P. Grogan, US Army Engineer Waterways, Experiment Station, Vicksburg, United States,
Abstract: In 1990 a free draining base course layer was constructed in the structural section of a pavement to be used as a military vehicle maintenance yard at Port Campbell, Kentucky. The Corps of Engineers was in the process of defining new criteria that would require the use of free draining base courses for virtually all military pavements. The construction of a pavement with a drainage layer provided the opportunity to obtain data on the performance and behavior of a pavement with a free draining base course. This paper will discuss the design, construction, laboratory testing, instrumentation, and results of the instrumentation for the pavement constructed with a drainable base course at Fort Campbell. The paper will briefly discuss the procedure being used by the Corps of Engineers for designing drainage layers for pavements. The construction procedures and problems specifically related to the Fort Campbell project will be examined. Laboratory tests performed on the materials used for the drainage layer will be related. Finally, the performance of the pavement will be analyzed by comparing the output of the base course correlated with precipitation data for an approximately 12 month period.
Subject Headings: Drainage | Base course | Vehicle-pavement interaction | Military engineering | Pavement design | Construction management | Maintenance | North America | Kentucky | United States
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