Revised approach to assessing traffic speed deflectometer data and field validation of deflection bowl predictions

Muller, Wayne B. and Roberts, Jon (2013) Revised approach to assessing traffic speed deflectometer data and field validation of deflection bowl predictions. International Journal of Pavement Engineering, 14 4: 388-402. doi:10.1080/10298436.2012.715646


Author Muller, Wayne B.
Roberts, Jon
Total Author Count Override 2
Title Revised approach to assessing traffic speed deflectometer data and field validation of deflection bowl predictions
Journal name International Journal of Pavement Engineering   Check publisher's open access policy
ISSN 1029-8436
1477-268X
Publication date 2013-04-01
Year available 2012
Sub-type Article (original research)
DOI 10.1080/10298436.2012.715646
Volume 14
Issue 4
Start page 388
End page 402
Total pages 15
Place of publication Colchester, Essex, United Kingdom
Publisher Taylor & Francis
Collection year 2013
Language eng
Formatted abstract
This study presents a revised approach to conceptualising and analysing data from the traffic speed deflectometer (TSD) which enables full deflection bowl predictions. The approach was successfully applied to TSD surface velocity measurements collected at seven test sites as part of recent Australian trials. More than 1500 deflection bowls produced from the TSD data were validated against approximately 600 40- and 50-kN falling weight deflectometer (FWD) deflection bowl profiles. Overall, the results showed a clear correlation between the shape and magnitude of deflection bowls predicted by both methods. Estimates of maximum deflection (d 0) and structural curvature index (SCI300) from both methods were also compared, showing a strong correlation. The results suggest that the TSD device has significant potential to be used to collect measurements of pavement deflection bowls at highway speeds which are comparable with FWD deflection bowl measurements.
Keyword Pavement deflection
Traffic speed deflectometer
Falling weight deflectometer
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Version of record first published: 3 September 2012.

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Official 2013 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 8 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 8 times in Scopus Article | Citations
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Created: Tue, 22 Jan 2013, 02:15:31 EST by Julie Hunter on behalf of School of Civil Engineering