Comparative Field Performance of Subdrainage Systems
Publication: Journal of Irrigation and Drainage Engineering
Volume 123, Issue 3
Abstract
Long-term pavement performance in wet climates is directly related to the amount, extent, and duration of internal moisture. Retention of moisture in base/subbase layers can lead to damage and premature failure of the pavement structure. A positive subdrainage system can mitigate moisture retention. Two types of subdrainage collector systems are commonly used for removing subsurface moisture from pavement systems. These are the conventional perforated pipe edge drains and the prefabricated edge drains (PFEDs) or geotextile fin drains. Significant research was conducted in Indiana on in-place asphalt, concrete, and overlaid pavement sections incorporating these two types of subdrainage systems. Data collected from instrumented sites show varying response rates and time of outflow with respect to precipitation for pavement and collector types. Pavement-shoulder joints were found to be the major source of surface infiltration. Statistical analysis has shown significant influence of base permeability in addition to pavement and drain types on outflow volumes.
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Copyright © 1997 American Society of Civil Engineers.
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Published online: May 1, 1997
Published in print: May 1997
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