CRC pavement at Clybucca NSW: a 40-year assessment of performance and implications
The first continuously reinforced concrete pavement (CRCP) on a public road in New South Wales was constructed in 1975-76 on a 5.5 km length of the Pacific Highway at Clybucca Flat in the Macleay Valley approximately 450 km north of Sydney. The durability of this pavement has been excellent. In 2015, and at the end of its forty year design life, it is timely to undertake an assessment of the performance of the pavement against the design assumptions. An estimate is made of the actual traffic loading for comparison with the design value, and its original thickness design is compared with that from the current Austroads design using the same design inputs. Several aspects of the pavement design differ from current standards, and their impact will be discussed. Examples include the lack of a selected material zone, the construction in soft-soil conditions, and the “without shoulder” condition. The design Base concrete compressive strength of 28 MPa is also low by today’s standards.
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Authors:
- Ayton, G
- Haber, E
- Hodgkinson, J
- Conference:
- Publication Date: 2015-7
Language
- English
Media Info
- Pagination: 39p
- Monograph Title: Australian Society for Concrete Pavements Conference (ASCP), 2015, Coffs Harbour, NSW
Subject/Index Terms
- TRT Terms: Design standards; Pavement design; Pavement performance; Pavements; Reinforced concrete; Strength of materials
- Uncontrolled Terms: Road design and asset management
- Geographic Terms: Australia; Clybucca, New South Wales
- ATRI Terms: Design standard; Pavement design; Pavement performance; Reinforced concrete; Strength
- ITRD Terms: 9011: Design (overall design); SPECIFICATION (STANDARD); 5544: Strength (mater)
- Subject Areas: Highways; Pavements; I22: Design of Pavements, Railways and Guideways;
Filing Info
- Accession Number: 01573384
- Record Type: Publication
- Source Agency: ARRB
- Files: ITRD, ATRI
- Created Date: Aug 24 2015 2:09PM