Innovative surfacing treatments delivering safer roads
A number of cost-effective, innovative surfacing treatments have been developed in New Zealand for low volume roads. This paper describes a sample of these innovative surfacing treatments from throughout New Zealand. Significant changes to asset management models and practices during the past 15 years include increased reliance on network surveys of skid resistance and texture depth to identify sites that require treatment. Industry has made substantial investment in new developments and innovation, in order to extend the road maintenance budget; the innovative treatments described in detail in the paper include: modern computer-controlled sprayers have been developed to apply bitumen at rates that vary transversely across the lane width and are being used when chip seal surfaces have insufficient macrotexture in the wheeltracks as well as a preventative measure for binder rise in the future; ultra high-pressure watercutting is being used to improve both macrotexture and microtexture of surfacings on low volume roads; thin and ultra-thin textured gap-graded hot mixes are being used in, high stress high trafficked areas. The performance to date of these treatments and strategies is discussed in the paper.
- Record URL:
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Authors:
- PIDWERBESKY, B
- Killick, G
- Waters, J
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Conference:
- International Surface Friction Conference, 3rd, 2011
- Location: Gold Coast Queensland, Australia
- Date: 2011-5-15 to 2011-5-18
- Publication Date: 2011-5
Language
- English
Media Info
- Pagination: 9p
- Monograph Title: 3rd International Road Surface Friction Conference, Gold Coast, Queensland, 15-18 May 2011
Subject/Index Terms
- TRT Terms: Highway design; Macrotexture; Pavement performance; Surfacing
- Uncontrolled Terms: Road design and asset management; Road networks; Road surface properties
- Geographic Terms: New Zealand
- ITRD Terms: 5925: Properties; 3031: Skid resistance
- Subject Areas: Design; Highways; I23: Properties of Road Surfaces;
Filing Info
- Accession Number: 01344021
- Record Type: Publication
- Source Agency: ARRB
- Files: ITRD, ARRB, ATRI
- Created Date: Jul 13 2011 11:52AM