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Design and Construction of a New Asphalt Drainage Layer

G. W. Maupin
Format
EBook; Book; Government Document; Online
Published
Charlottesville, Va. : Virginia Transportation Research Council, 2004.
Language
English
Series
VTRC
VTRC (Series)
Abstract
Because of the importance of having a good drainage mechanism built into a pavement structure to prevent premature failure, the Virginia Department of Transportation (VDOT) has used drainage layers under both portland cement concrete and asphalt concrete since the early 1990s. Unfortunately, these mixes have been rather difficult to place and durability has been a possible issue of concern. The purpose of this study was to design an improved asphalt drainage layer for one of the VDOT districts that eliminated the deficiencies of previous drainage layers. A 50-50 blend of No. 68 and No. 8 aggregates was chosen based on laboratory testing, and the mix was installed in a newly constructed flexible pavement with good results. The mix was easy to place and contained thick asphalt films that should contribute to a long service life. Based upon this success, a specification was drafted and the mix was used in an additional project in the fall of 2003.
Description
iii, 14 p. : ill. ; 28 cm.
Notes
  • "November 2004."
  • Includes bibliographical references (p. 8-9).
Series Statement
VTRC ; 05-R11
VTRC (Series) ; 05-R11
Other Forms
Also available online.
Copyright Not EvaluatedCopyright Not Evaluated
Technical Details
  • Access in Virgo Classic
  • Staff View

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    a| iii, 14 p. : b| ill. ; c| 28 cm.
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    a| VTRC ; v| 05-R11
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    a| "November 2004."
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    a| Includes bibliographical references (p. 8-9).
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    a| Final report; b| May 1, 2003-November 30, 2004.
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    a| Because of the importance of having a good drainage mechanism built into a pavement structure to prevent premature failure, the Virginia Department of Transportation (VDOT) has used drainage layers under both portland cement concrete and asphalt concrete since the early 1990s. Unfortunately, these mixes have been rather difficult to place and durability has been a possible issue of concern. The purpose of this study was to design an improved asphalt drainage layer for one of the VDOT districts that eliminated the deficiencies of previous drainage layers. A 50-50 blend of No. 68 and No. 8 aggregates was chosen based on laboratory testing, and the mix was installed in a newly constructed flexible pavement with good results. The mix was easy to place and contained thick asphalt films that should contribute to a long service life. Based upon this success, a specification was drafted and the mix was used in an additional project in the fall of 2003.
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    a| Performed by Virginia Tansportation Research Council for Virginia Department of Transportation under project no. f| 73191
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