DEVELOPMENT OF DESIGN METHODS FOR THE STABILISATION OF SOILS AND SOFT ROCKS FOR USE AS PAVEMENT BASE COURSE MATERIALS: COMPREHENSIVE REPORT 1978/80

Limestone stabilised with three percent bitumen has a good service record as base course material in the perth metropolitan area. The low cost of the limestone and the ease of construction contributed to its acceptance. The results of laboratory investigations predicted that satisfactory performance can be expected from a limestone base course stabilised with one or two percent bitumen or two percent cement. In 1977 trial sections were constructed in leach highway using these three stabilised materials as the base course. A fourth section was constructed with 50 mm bituminous concrete laid on unstabilised limestone. By September 1980 the first three sections had carried approximately 1.29 x 10**6 esas and the section with the bituminous concrete surfacing carried approximately 1.13 X 10**6 esas. The performance of the four sections was satisfactory at that stage of traffic loading. In addition the relative performance of unstabilised and stabilised limestone was assessed in the Australian road research board's test track. At the conditions tested the limestone stabilised with two percent cement performed best followed by limestone stabilised with two, three and one percent bitumen and by unstabilised limestone in that order. Laboratory tests show that limestone stabilised with 1.5 percent cement and 3.0 percent flyash has adequate strength if laid in depths of 120 to 180 mm depending on the type of traffic. (TRRL)

  • Corporate Authors:

    Western Australia Main Roads Department, Australia

    Waterloo Crescent
    East Perth, West Australia 6000,   Australia 
  • Authors:
    • HAMORY, G
  • Publication Date: 1980-11

Media Info

  • Features: References; Tables;
  • Pagination: 35 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00334653
  • Record Type: Publication
  • Source Agency: ARRB Group Ltd.
  • Report/Paper Numbers: Rpt No. Med 80/46 Monograph
  • Files: ITRD, TRIS, ATRI
  • Created Date: Aug 15 1981 12:00AM