TOWARDS IMPROVED STRUCTURAL DESIGN CRITERIA FOR GRANULAR EMULSION MIXES (GEMS)

This paper focuses on the determination of the structural capacity and the development of limiting structural design criteria for GEMS in terms of fatigue cracking and fracturing. Findings are based on a number of Heavy Vehicle Simulator (HVS) tests conducted as part of the Heilbron trial sections, using wheel loads ranging from 40 kN to 140 kN. A weathered dolerite was used as the parent material and was modified with 2.5 per cent lime primarily in order to lower the plasticity index before emulsion treatment. Significant increases in the resilient modulus and indirect tensile strength had been observed over a period of 10 months for the material investigated here. The structural performance of the GEMS (studied here) under normal and extreme loading provided significant evidence that the type of base material is suited for traffic conditions up to 10 million E80s, if well supported. (A) For the covering abstract of the conference see IRRD 873950.

Language

  • English

Media Info

  • Features: References;
  • Pagination: III44-III68

Subject/Index Terms

Filing Info

  • Accession Number: 00714395
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Dec 27 1995 12:00AM