O'May, David Victor (2007) A study of pavement performance on the Gatton Bypass Duplication. [USQ Project]
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[Abstract]: The Project aims to assess the viability of pavement cross sections used in the Southern
District of Main Roads Queensland by investigation and analysis of pavement performance for cross section types used on the Gatton Bypass Duplication (GBD).
Pavement Cross Section for the GBD was based on a design adopted from the Victorian Roads Authority, VicRoads. Two significant aspects of the GBD were innovative for
the Department of Main Roads; First use of VicRoads Cross Section and First use of Time Domain Reflectometry (TDR) Technology to monitor moisture in the pavements.
Investigation into the Pavement Performance includes; reviewing TDR data from seven installations, development of a Pavement Performance Profile from historical data and Forensic Investigation into current failures, probable causes and contributory factors.
Compilation of the Pavement Performance Profile required analysis of yearly data relating to structural, functional and other attributes. The functional attributes of Rutting and Roughness were considered as they correlate well with road user
expectations. Structural performance assessments were based on Deflection Testing, which indicated the pavements structural capacity to withstand current and future loadings prior to failure. Traffic Loadings and Maintenance costs, both historical and projected, were also integrated into the Profile.
Forensic Investigation into the current failures included conventional methods and the modern technologies of Ground Penetrating Radar (GPR) and Closed Circuit Television (CCTV). GPR was utilised to identify anomalies and moisture within and below the
pavement structure, while CCTV provided an opportunity to investigate sub-soil drains.
The Pavement Performance Profile and Forensic Investigation are reconciled to produce
an interrelationship between performance and failure. This interrelationship forms the basis for Distress Threshold Limits and the calculation of the Estimated Remaining Service Life of the pavement, which concludes the Project. The methodology
developed for this study is reviewed and considered for its application to other
construction projects completed by the Department of Main Roads.
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|Item Type:||USQ Project|
|Item Status:||Live Archive|
|Faculty / Department / School:||Historic - Faculty of Engineering and Surveying - Department of Agricultural, Civil and Environmental Engineering|
|Date Deposited:||16 Jun 2008 04:11|
|Last Modified:||02 Jul 2013 23:03|
|Uncontrolled Keywords:||pavements; pavement cross sections; pavement performance; Gatton Bypass Duplication|
|Fields of Research :||09 Engineering > 0905 Civil Engineering > 090507 Transport Engineering
09 Engineering > 0905 Civil Engineering > 090502 Construction Engineering
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