Review of French cold mix technique

A review of work carried out by Total and Appia launched to develop new methods and formulation for cold mix for resurfacing is provided. This work focussed on the critical mechanisms leading to wetting and the formation of a continuous bitumen network through the mix. By modifying the aggregate surface, to present a uniform lipophilic face, variation in aggregate source and chemistry becomes less of an issue. The lipophilic face also enhances the mode of transfer of the bitumen globule from a discrete entity within an aqueous sea to form a continuous adhesive layer well, bonded to the aggregate, without the incorporation of water between the aggregate and the bitumen. Additives that facilitate the redistribution of the emulsifiers around the bitumen globules after flocculation provide enhanced conjugation of the molecules. Consequently a continuous film of residual binder develops without the degree of contract associated with traditional cold mix processes. Successful laboratory cold mix trials and site trials are described. For the covering abstract see E145817

  • Authors:
  • Publication Date: 2006


  • English

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  • Accession Number: 01155341
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Apr 23 2010 11:02AM