A study of the effect of bitumen / vegetable oil blends on asphalt mixture performance

In this investigation, a 40/60 penetration grade bitumen was blended with vegetable oil to produce bitumen/oil blends ranging from 98/2 to 90/10% by mass. Rheological characterisation of the blends was carried out using the penetration, softening point, rotational viscometer and dynamic shear rheometer tests. The bitumen/oil blends were then used to manufacture conventional dense bitumen macadam specimens using a Marshall hammer. Prior to compaction at equi-viscous temperatures, half the specimens were short term oven aged whilst the other half was compacted directly following the mixing stage. The bulk densities of the compacted specimens were subsequently measured to detect any changes in mix workability as a result of blending oil with bitumen or as a result of oven aging. The initial indirect tensile stiffness moduli were then measured and the procedure repeated following 20 degrees C water immersion for a period of up to four weeks. The variations in mixture stiffness caused by heat curing and water damage were thus assessed. Furthermore, the Hirsch model was shown to be able to predict quite accurately asphalt mix stiffness from the mix volumetric and binder modulus data. For the covering abstract see ITRD E133040.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/9789609184922
• Authors:
  • COPE, M
  • ALLEN, B
  • ZOOROB, S E
• Publication Date: 2007-4

Language

• English

Media Info

• Serial:
  • PROCEEDINGS OF THE 4TH INTERNATIONAL CONFERENCE BITUMINOUS MIXTURES AND PAVEMENTS, HELD THESSALONIKI, GREECE, APRIL 2007 - VOLUME 1
  • Issue Number: p261-70

Subject/Index Terms

• TRT Terms: Bitumen; Compaction; Conferences; Floods; Heat; Mix design; Oils; Properties of materials; Stiffness; Vegetable oils
• ITRD Terms: 4963: Bitumen; 3686: Compaction; 8525: Conference; 2569: Flooding; 6743: Heat; 4714: Mix design; 4961: Oil; 5925: Properties; 5931: Stiffness
• Subject Areas: Design; Hydraulics and Hydrology; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 01081910
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 9789609184922
• Files: ITRD
• Created Date: Nov 29 2007 2:26PM