Use of the impact roller in site remediation and preparation for heavy duty pavement construction

The 5.5 hectare site of the former Bunnerong Power Station at Port Botany, New South Wales, has been remediated, capped, and prepared for future industrial/commercial land use. The adopted remediation strategy was, after hydrocarbon remediation, to largely leave the remaining contaminated materials in-situ, to cap the area with inert weathered sandstone fill with a minimum of disturbance of the subgrade, and to subject the capping and the underlying subgrade to rolling dynamic compaction using a Broons BH-1300 "square" impact roller. To assess the overall geotechnical characteristics of the completed works without intrusive investigation of the capping and the potentially contaminated subgrade, extensive testing was carried out using the Heavy Falling Weight Deflectometer (HFWD). The HFWD is usually used on completed pavements, and some modifications to the testing and interpretation procedures were necessary to cope with the weaker "pavement" of weathered sandstone fill at Bunnerong. The paper presents the results of the testing programme and final evaluation of the capping and sub grade using the HFWD. (a) For the covering entry of this conference, please see ITRD abstract no. E211639.

  • Authors:
    • DAVIES, M
    • MATTES, N
    • AVALLE, D
  • Publication Date: 2004-5

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01011256
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, ATRI
  • Created Date: Dec 19 2005 2:57PM