Innovative laboratory and field assessment techniques for roadbase materials

This paper details innovative laboratory and field assessment techniques for roadbase materials and pavement stabilisation processes undertaken by the RTA Pavement Structures Section during 2010 and 2011. One of the main drivers for this work is to contribute to RTA sustainability and energy reduction objectives through greater use of available "alternative material" sources such as industrial by-products, recycled construction and demolition wastes, and marginal or non conforming natural materials as components of a proposed pavement structure. The techniques described in this paper have been applied to the marginal gravels in western NSW, mixes of heavy duty roadbase material from Northern region, recycled glass/sandstone blends and recycled concrete blends sourced from industry suppliers. Complementing the environmental objectives, the effectiveness of stabilisation techniques and suitability of materials for stabilisation is part of long term, systematic investigation of the potential for re-use of existing roadbase materials. Field evaluations have been undertaken of construction trials in the Southern Region of NSW using innovative techniques such as infrared imaging for temperature measurement. This paper describes these recent improvements in field testing and monitoring capability and includes recommendations for the further investigations of interest to both RTA and industry stakeholders.

• Authors:
  • Zhang, J S
  • Hazell, D
• Conference:
  • RTA Pavements Conference, 2011, Sydney, New South Wales, Australia
• Publication Date: 2011-9

Language

• English

Media Info

• Pagination: 22p (day 1)
• Monograph Title: RTA Pavements 2011 Conference, 20-21 September 2011, Darling Harbour, Sydney

Subject/Index Terms

• TRT Terms: Base course (Pavements); Bituminous materials; Field tests; Laboratory tests; Monitoring; Pavement components; Recycled materials; Surveillance; Test procedures
• Uncontrolled Terms: Materials technology (asphalt/bitumen/concrete)
• Geographic Terms: New South Wales
• ATRI Terms: Field test; Laboratory test; Monitoring; Pavement materials; Recycled materials; Roadbase; Stabilization
• ITRD Terms: 9006: Continuous; 4573: Recycling (mater); 3688: Roadbase stabilization
• Subject Areas: Highways; Pavements; I31: Bituminous Binders and Materials; I61: Equipment and Maintenance Methods;

Filing Info

• Accession Number: 01374102
• Record Type: Publication
• Source Agency: ARRB
• Files: ITRD, ATRI
• Created Date: Jun 27 2012 9:55AM