TENTATIVE MIX-DESIGN CRITERIA FOR GAP-GRADED BITUMINOUS SURFACES

Since the turn of this century, extensive use has been made of gap-graded bituminous surfacing mixtures in the United Kingdom. The design of these mixtures has largely been empirical, and specifications have been of the recipe type. The excellent performance given by these mixtures, even under the most severe traffic conditions, has prompted engineers in other parts of the world to use these surfaces. Experience has shown that under some climatic conditions the United Kingdom specifications did not always produce the most satisfactory mixtures, and a national method of design was urgently required. This paper covers a research study into factors that affect the performance of gap-graded surfaces and isolates those that are of particular importance. It is shown that the Marshall test method, when used in combination with air permeability and indirect tensile tests, can be used to design gap-graded mixtures. Tentative criteria are established for the mix design of gap-graded bituminous surfaces; they will satisfy normally accepted standards with respect to distortion, fracture strength (toughness), fatigue, imperviousness, and durability.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1974/515/515-012.pdf
• Record URL:
  • https://scholar.google.com/scholar_lookup?title=TENTATIVE+MIX-DESIGN+CRITERIA+FOR+GAP-GRADED+BITUMINOUS+SURFACES&author=C.+Marais&publication_year=1974
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Mechanical Properties of Bituminous Paving Mixtures. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Marais, C P
• Conference:
  • 53rd Annual Meeting of the Highway Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1974-1-21 to 1974-1-25
• Publication Date: 1974

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 132-145
• Monograph Title: Characteristics of and factors influencing bituminous materials and mixtures
• Serial:
  • Transportation Research Record
  • Issue Number: 515
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Bituminous materials; Durability; Gap grading; Mechanical fatigue; Mix design; Moisture barriers; Pavement performance; Pavements; Permeability; Structural distortion; Surface treating; Tension tests; Toughness
• Uncontrolled Terms: Criteria; Indirect tensile test; Marshall mix design
• Old TRIS Terms: Bituminous surfacing; Distortion
• Subject Areas: Highways; Maintenance and Preservation; Materials; Pavements;

Filing Info

• Accession Number: 00095575
• Record Type: Publication
• ISBN: 0309023599
• Report/Paper Numbers: #517
• Files: TRIS, TRB
• Created Date: Jul 2 1975 12:00AM