MIX DESIGN INVESTIGATION OF ASPHALTIC CONCRETE FOR DAM FACING-GLEN ELDER DAM MISSOURI RIVER BASIN PROJECT, KANSAS

Local aggregate materials were found to be suitable for asphaltic concrete for Glen Elder Dam near Beloit, Kansas, by a limited mix design investigation undertaken to establish specifications requirements for asphaltic concrete. The specifications provided for alternative bids of riprap and bedding, soil-cement, or asphaltic concrete for facing the 195,000-sq-yd upstream slope of the 3-mi-long earthfill embankment. Since 1-1/2-in.-max-size graded aggregrate normally used was not economically available at the damsite, 2 samples of a local sand passing the No 4 sieve were evaluated and accepted, if processed to obtain the required gradation. Other conclusions were: (1) A satisfactory asphaltic concrete mix was obtained using 12.0% asphalt cement (50-60 penetration grade) plus 1.0% hydrated lime, based on dry weight of aggregate. (2) Adding 1.0% hydrated lime to a 12.0%-asphalt- content mix decreased air voids and increased density, room temperature compressive strength, 140-deg-f unconfined compressive strength, and stability. (3) With the above acceptable mix, the required minimum field density (98% of laboratory standard density) was determined to be 135.4 pcf. (4) Average volume swell and absorption values for the acceptable mix compacted to laboratory standard density were 0.32 and 0.34, respectively. (5) Wave action tests, although incomplete, up to now indicates that the approved mix has good erosion resistance.

  • Corporate Authors:

    Department of the Interior

    1849 C Street, NW
    Washington, DC  United States  20240
  • Publication Date: 1965-2-18

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Subject/Index Terms

Filing Info

  • Accession Number: 00262528
  • Record Type: Publication
  • Report/Paper Numbers: Rept No CHE-42
  • Files: TRIS
  • Created Date: Dec 13 1974 12:00AM