PAVEMENT RECYCLING USING FOAMED BITUMEN

In Australia, as in many other parts of the world, the need for recyclingof scarce resources has been recognised as an important activity. The ever increasing traffic volume means that pavement strengthening is requiredfor many roads. With typical Australian pavement make up, in situ stabilisation of granular bases eliminates costly replacement of existing materials. In this paper, the design and application of the foamed bitumen process is described and examples of completed construction jobs are reported. Foam characterisation, mix design, curing and mechanical characterisation of foamed bitumen mixes are discussed, together with pavement design methodology. Foamed bitumen stabilisation, FOAMSTAB, offers a cost effective, rapid form of road rehabilitation in which all of the existing failed orfatigued pavement materials are re-used to obtain a new flexible pavementbase. For the various jobs carried out to date, the FOAMSTAB process hasprovided significant savings in costs and materials and improved life by improving the strength and durability of the existing pavement materials with minimal disruption to the travelling public. (a) For the covering abstract of this conference see IRRD abstract no. 861222.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 349-65

Subject/Index Terms

Filing Info

  • Accession Number: 00669756
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Dec 23 1994 12:00AM