Utilization of binder stress sensitivity to investigate the impact of applied load, binder type, and aggregate structure on the rutting behavior of bituminous mixtures

A stress sensitivity test was used to determine a binder rheological property that could be used to predict rutting in bituminous mixtures at elevated temperatures. A heated air controlled Hamburg Wheel Tracking Tester was used to control specimens at test temperatures ranging from 52 to 75°C. Applied loads for the rutting test were 534 N, 703 N and 890 N. Superpave fine aggregate blends suitable for 1 million and 10 million ESAL pavements and a coarse Superpave aggregate blend suitable for a 10 million ESAL pavement were evaluated. Nine different binders were studied, including three non-polymer modified binders and six binders containing a variety of elastomeric polymer additives. PG grades ranged from PG 58-28 to PG 76-22. A relationship between the binders' resistance to increasing stress at a given temperature and the rut depth of the mixes produced from the binders was developed. Results of this research establish the significance of stress as a defining parameter in predicting the contribution of the binder to permanent deformation of the mixture. A relationship between changes in rutting load, test temperature and rutting depth for binders was established. A relationship between aggregate structure and the effective rutting resistance of the binders was also developed. For the covering abstract see ITRD E157233

• Authors:
  • REINKE, G
  • ENGBER, S
  • HERLITZKA, D
  • TRANBERG, D
  • JORGENSON, J
• Publication Date: 2008

Language

• English

Media Info

• Pagination: 12p
• Serial:
  • PROCEEDINGS OF THE 4TH EURASPHALT AND EUROBITUME CONGRESS HELD MAY 2008, COPENHAGEN, DENMARK
  • Publisher: EUROPEAN ASPHALT PAVEMENT ASSOCIATION (EAPA)

Subject/Index Terms

• TRT Terms: Admixtures; Aggregates; Binders; Bituminous mixtures; Chemical composition; Conferences; Deformation; Mix design; Polymers; Prevention; Rutting; Temperature
• ITRD Terms: 4736: Admixture; 4577: Aggregate; 4948: Binder; 4967: Bituminous mixture; 8525: Conference; 5595: Deformation; 4714: Mix design; 7482: Polymer; 9149: Prevention; 3081: Rutting (wheel); 5937: Structure (physicochem); 6722: Temperature
• Subject Areas: Geotechnology; Security and Emergencies; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials; I36: Aggregates;

Filing Info

• Accession Number: 01321415
• Record Type: Publication
• Source Agency: TRL
• Files: ITRD
• Created Date: Nov 29 2010 11:02AM