TECHNICAL ASPECTS, RESEARCHES AND STUDIES CONCERNING THE GENERAL TYPE OF OPEN TEXTURE ROAD AND PLANT MIXED SURFACES

THE PENNSYLVANIA STATE HIGHWAY SYSTEM WAS INCREASED IN AUGUST, 1931, BY THE ADDITION OF 20,825 MILES OF RURAL ROADS. THESE RURAL ROADS ARE BEING SURFACED TO A WIDTH OF 16 FEET AT A COST OF $6,000 TO $9,000 PER MILE, INCLUDING SURVEYS, GRADING, DRAINAGE AND SHOULDERS. BASE COURSES ARE GENERALLY AT LEAST EIGHT INCHES THICK, THE PRINCIPAL MATERIALS USED BEING NATIVE STONE SLEDGED IN PLACE TO FOUR INCH MAXIMUM SIZE, CRUSHED STONE, SLAG, CRUSHED GRAVEL AND RUN-OF-BANK GRAVEL. ON THESE BASE COURSES EITHER A SURFACE TREATMENT OR A TWO INCH COMPRESSED DEPTH OF ONE OF THE TYPES OF BITUMINOUS SURFACE COURSES IS USED. THE TYPE OF SURFACE USED DEPENDS ON TRAFFIC AND AVAILABLE FUNDS. THE REPORT DESCRIBES THE SURFACE COURSES USED AND ALSO THE BITUMINOUS MATERIALS WHICH ARE CUT-BACK ASPHALTS, ASPHALT EMULSIONS, AND TARS. HOT BITUMINOUS SURFACE TREATMENTS ARE USED ON SOME NATIVE STONE BASES WHERE TRAFFIC IS LIGHT. /AUTHOR/

  • Supplemental Notes:
    • Vol 14, ParT II, PP 92-103, 10 FIG
  • Authors:
    • Sulman, M H
  • Publication Date: 1935

Media Info

  • Monograph Title: Proceedings of the Fourteenth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 6-7, 1934. Part II: A Symposium on Research Features of Flexible-Type Bituminous Roads
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00211543
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 15 1971 12:00AM