DESIGN AND VISCOELASTOPLASTIC CHARACTERIZATION OF A LIME-DUNE-SAND-ASPHALT MIX ---PRE CONFERENCE PROCEEDINGS 3RD IRF MIDDLE EAST REGIONAL MEETING. TOWARDS BETTER ROAD PERFORMANCE, RIYADH, SAUDI ARABIA, 13-18 FEBRUARY 1988. 6 VOLUMES.

The objectives of this study were: (1) to partially or fully replace premium aggregates by local dune sands in pavement construction; (2) to study the effect of hydrated lime on the properties of dune sand-asphalt mixes; and (3) to derive regression models that evaluate the elastic, plastic, viscoelastic and viscoplastic responses of a useable lime-sand-asphalt mix. A simple equipment to reliably conduct repeated creep tests to accomplish the third objective was also desired. A mix that consisted of a uniformly graded dune sand and asphalt was treated with hydrated lime to improve its engineering properties. By altering the mix design variables, an economical and useable lime-sand-asphalt mix was produced. Durability, elasticity and viscoelasticity properties were found acceptable for use in surface layers of lightly-trafficked roads, and it is believed that this mix can be used as a base course in all road categories. Material laws that evaluate the elastic, plastic, viscoelastic, and viscoplastic responses of the mix were derived using repeated creep testing. The test data were analysed using computerized statistical methods, and a FORTRAN computer program was established to evaluate the above responses. The derived laws were verified by additional experiments.(a) for the covering abstract of the proceedings see IRRD 817883.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/1022954X
• Corporate Authors:

  International Road Federation

  525 School Street, SW
  Washington, DC  United States  20024
• Authors:
  • SABBAGH, A O
• Publication Date: 1988

Language

• Undetermined

Media Info

• Pagination: p. 3.291-3.32
• Serial:
  • Publication of: International Road Federation
  • Publisher: International Road Federation
  • ISSN: 1022-954X

Subject/Index Terms

• TRT Terms: Base course (Pavements); Bituminous mixtures; Calcium oxide; Computer programs; Conferences; Creep; Developing countries; Dune sands; Hydration; Mix design; Plasticity; Regression analysis; Surfacing; Tests; Viscoelasticity
• Subject Areas: Data and Information Technology; Highways;

Filing Info

• Accession Number: 00486932
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Sep 30 1989 12:00AM