Vasquez Boulevard between mileposts 291 and 297 in Commerce City was originally constructed in the 1940s with asphalt that didnt contain an anti-stripping agent. It is now part of US Highway 6 and has been designated as an over-weight and over-height relief route for the I-25 corridor. The boulevard has become a main trucking route for a heavily industrialized area. There was a major rehabilitation project in 2001 on this stretch of road with 2 milling and 2 stone matrix asphalt (SMA) paving. Parts of this pavement started rutting less than a year after construction. An investigation of the pavement failure determined that the causes were excessive and repeated loading of over-weight and over-height trucks; exposure of milled surface that didnt contain an anti-stripping agent to traffic and weather; inexperience with SMA paving materials, testing, and construction; and highly variable mix gradation and AC content quality levels. Recommendations for future SMA projects include training personnel to understand the complexities of SMA; establishing rigorous methods of calculating ESALs; adding fibers to reduce draindown and increase film thickness; using material transfer vehicles to minimize segregation and improve smoothness; and specifying the Superpave Gyratory Compactor for design and verification testing.


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    Titel :

    Forensic Investigation of Pavement Failure on Vasquez Boulevard


    Beteiligte:
    B. Acimovic (Autor:in) / L. Rajasekar (Autor:in) / R. Akhavan (Autor:in)

    Erscheinungsdatum :

    2007


    Format / Umfang :

    71 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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