Characterisation of foamed bitumen treated materials from HVS test sections

The South African Heavy Vehicle Simulator (HVS) has tested two pavements recycled with foamed bitumen. Complimentary to the HVS testing, extensive laboratory testing was performed on the two base materials, a poor quality previously cement treated base, and a high quality crushed stone base. The HVS tests are described in a companion paper. The purpose of the laboratory testing was to characterise the material behaviour for all distress types, investigate the interaction between the foamed bitumen and the active filler cement), and to obtain sufficient data to develop structural design models in combination with the HVS test results. The laboratory testing ensures the HVS results can be extended to be applicable to a wider range of variables. Many laboratory tests were performed, including engineering tests (UCS and ITS), mechanical tests (static and dynamic triaxial tests, monotonic flexural beam tests), and moisture sensitivity tests (erosion and wet/dry durability). Three cement contents and up to five binder contents were used. This paper describes the results from the laboratory tests, and discusses the material behaviour, with particular attention to the interaction between the binder and the cement, and their relative effect on the behaviour. These results have implications for both mix and structural design of pavements recycled with foamed bitumen.

• Authors:
  • Long, F M
  • Theyse, H L
  • Ventura, D F
• Conference:
  • International Conference on Accelerated Pavement Testing, 2nd, 2004, Minneapolis, Minnesota, USA
• Publication Date: 2004

Language

• English

Media Info

• Pagination: 19p
• Monograph Title: Full scale accelerated pavement testing: a southern hemisphere and Asian perspective

Subject/Index Terms

• TRT Terms: Binders; Cement; Laboratory tests; Mix design; Pavements; Properties of materials; Recycled materials; Structural design; Tests for suitability, service and quality; Triaxial shear tests
• Uncontrolled Terms: Foam bitumen
• ATRI Terms: Binder; Cement; Foamed bitumen; Laboratory test; Material properties; Mix design; Moisture sensitivity; Pavement testing; Recycling; Structural design; Triaxial test
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 01389247
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, ATRI
• Created Date: Aug 23 2012 3:16AM