MARYLAND HIGHWAY DRAINAGE STUDY. VOLUME VII. AN INVESTIGATION OF THE VERTICAL AND HORIZONTAL HYDRAULIC CONDUCTIVITIES OF DENSE BASE COURSE AGGREGATES

The report describes an experimental investigation designed to examine the effects on permeability of a dense graded base course aggregate when the gradation is varied within the allowable range set forth by the Maryland State Highway Administration. The gradations were chosen so that the amount of fines by weight passing the number 200 sieve is varied between 10 and 0 percent. The study showed that significant increases in hydraulic conductivity can be realized by shifting the gradation curve from the finest curve to the coarsest curve within the MSHA allowable range for material designated dense graded aggregate. The study also presents a device which measures both vertical and horizontal hydraulic conductivity of the same granular base course specimen. Practical application of horizontal hydraulic conductivity is discussed in reference to the Corps of Engineers' drainage requirement for base course materials.

  • Supplemental Notes:
    • Prepared in cooperation with Maryland State Highway Administration, Brooklandville. Bureau of Research. See also PB-249 558.
  • Corporate Authors:

    University of Maryland, College Park

    Department of Civil and Environmental Engineering
    College Park, MD  USA  20742

    Maryland Department of Transportation

    State Highway Administration, 707 N Calvert Street
    Baltimore, MD  USA  21202
  • Authors:
    • Moynahan, T J
    • Sternberg, Y M
  • Publication Date: 1974-7

Media Info

  • Pagination: 241 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00136927
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: AW074-073-046-7 Final Rpt.
  • Files: NTIS, TRIS, STATEDOT
  • Created Date: Jul 22 2001 12:00AM