INFLUENCE OF POLYMER MODIFICATION ON LOW TEMPERATURE BEHAVIOUR OF BITUMINOUS BINDERS AND MIXTURES

Effects of polymer modification on low-temperature properties of bituminous binders and mixtures were studied. Three bitumens were blended with 6% SBS, SEBS, EVA or EBA. Dense graded asphalt mixtures were prepared using a gyratory compactor. The low-temperature properties of the binders were characterised using dynamic shear rheometer and bending beam rheometer, and the low-temperature cracking of the mixtures evaluated by tensile stress restrained specimen test. The results indicated that low-temperature parameters were greatly dependent on the base bitumen, and in most cases, polymer modification did not show significant benefits. The mixture cracking temperature was found to correlate with the limiting temperatures (in bending beam rheometer) of the binders, weakly with Fraass breaking point, but not with parameters obtained using dynamic shear rheometer. Upon isothermal storage at low temperatures, the bitumens displayed physical hardening, and effect of polymer modification was small. However, physical hardening as measured by TSRST (tensile stress restrained specimen test) was not observed for the mixture studied. For the covering abstract see ITRD E117423.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/2912143357
• Corporate Authors:

  RILEM PUBLICATIONS S.A.R.L

  157 RUE DES BLAINS
  BAGNEUX,   France  F-92220
• Authors:
  • Lu, Xiaochun
  • ISACSSON, U
  • Ekblad, J
• Conference:
  • PERFORMANCE TESTING AND EVALUATION OF BITUMINOUS MATERIALS PTEBM'03. PROCEEDINGS OF THE 6TH INTERNATIONAL RILEM SYMPOSIUM HELD ZURICH, SWITZERLAND, 14-16 APRIL 2003
• Publication Date: 2003

Language

• English

Media Info

• Features: References;
• Pagination: p. 435-41

Subject/Index Terms

• TRT Terms: Behavior; Binders; Bitumen; Conferences; Polymers; Temperature
• Uncontrolled Terms: Modifications
• ITRD Terms: 9001: Behaviour; 4948: Binder; 4963: Bitumen; 8525: Conference; 9048: Modification; 7482: Polymer; 6722: Temperature
• Subject Areas: Data and Information Technology; Safety and Human Factors;

Filing Info

• Accession Number: 00943386
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 2-912143-35-7
• Files: ITRD, ATRI
• Created Date: Jun 11 2003 12:00AM