SELECTION OF ADDITIVES FOR STABILISATION AND RECYCLING OF ROAD PAVEMENTS

Recent years have seen a vast increase in the range of additives available for pavement stabilisation, including cementitious blends of slag/flyash/hydrated lime and cement for bound pavements and polymeric stabilisers for flexible pavements. The aim of this paper is to assess the benefits andpossible restrictions of these products and develop guidelines to enable the selection of the most suitable product for individual projects. The paper reviews recent field and laboratory work associated with these additives and suggests methods of determining the most suitable additive for a specific job. The development of heavy equipment now capable of deep liftshas enabled in situ recycling of major highways. Stabilising to these depths requires specific features of the additive which are discussed in thepaper. The paper discusses additives that provide enhanced material properties while not significantly increasing the pavement stiffness, thereby allowing design techniques consistent with a fully flexible pavement. Thepaper concludes that these additives provide an important extension to the conventional additives available, broadening the possible application ofpavement stabilisation. (a) For the covering abstract of this conferencesee IRRD abstract no. 861222.

Language

  • English

Media Info

  • Features: References;
  • Pagination: p. 35-49

Subject/Index Terms

Filing Info

  • Accession Number: 00669755
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Dec 23 1994 12:00AM