DESIGN, CONTROL, AND INTERPRETATION OF TESTS FOR BITUMINOUS HOT MIX BLACK BASE MIXTURES

Research is reported which was made in an effort to discover a means of fabricating large "black base" specimens containing top size aggegate up to 1 - 3/4 inch, develop asphalt-voids ratio curves capable of establishing ranges of asphalt and voids contents applicable to both design and construction control in the field, formulate a type of strength test which is applicable to engineering interpretation and depict the advantages of asphalt over water as a stabilizing agent. The detrimental effects of moisture absorption upon strength and its relation to total percent voids examined, and it is concluded that mixtures containing less than 5 to 6 percent total voids will usually be unaffected by absorption of moisture. The pressure pycnometer was used in this investigation to obtain saturation in a minimum of time. A large, motorized gyratory press has been constructed with accessories for compacting large size specimens in one layer. Conclusions based on the study are presented.

  • Corporate Authors:

    Texas State Department of Highways & Public Transp

    P.O. Box 5051
    Austin, TX  USA  78763
  • Authors:
    • McDowell, C
    • Smith, A W
  • Publication Date: 0

Media Info

  • Features: Appendices; Figures; Tables;
  • Pagination: 64 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00096480
  • Record Type: Publication
  • Report/Paper Numbers: TP-8-71-E
  • Files: TRIS, STATEDOT
  • Created Date: Aug 13 1975 12:00AM