A DESIGN METHOD FOR GAP-GRADED ASPHALT MIXES

The article describes investigations into the effect that the composition of the mortar has on properties of the complete asphalt mix. A total of 27 mix compositions were studied, and the asphalt properties considered are Marshall stability and quotient, rut depth in a tracking machine and voids in the mix. The effect of bitumen type on results of creep tests and on relative deformation is described; whereas there is little increase in deformation resistance to be gained by using bitumens harder than normal, the use of bitumens of reduced temperature susceptibility should improve substantially the deformation resistance. A design procedure is suggested which would enable gap-graded asphalt to be made to a performance specification. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00373516
• Corporate Authors:

  Shell International Petroleum Company Limited

  Shell Center
  London SE1 7NA,   England 
• Authors:
  • Brien, D
• Publication Date: 1977-9

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 9-13
• Serial:
  • Shell Bitumen Review
  • Issue Number: 56
  • Publisher: Shell International Petroleum Company Limited
  • ISSN: 0037-3516

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Bitumen; Bituminous mixtures; Creep; Creep tests; Deformation; Design hourly volume; Gap graded aggregates; Gap grading; Marshall test; Mix design; Mortar; Porosity; Properties of materials; Ruts (Pavements); Rutting; Stability (Mechanics); Temperature; Void ratios
• Uncontrolled Terms: Rut
• Old TRIS Terms: Marshall stability marshall stability & flow test flow; Resistance; Tracking (Wheel); Void
• ITRD Terms: 4963: Bitumen; 4967: Bituminous mixture; 4732: Creep (mater); 5595: Deformation; 4597: Gap graded aggregate; 4714: Mix design; 5938: Porosity; 3081: Rutting (wheel); 5930: Stability; 6722: Temperature
• Subject Areas: Highways; Materials; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00172529
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Jun 28 1978 12:00AM