Traffic speed deflectometer measurements at the Aurora instrumented road test site

Christoffer Peder Nielsen, Petri Varin, Timo Saarenketo, Pauli Kolisoja

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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Abstract

The results from a comprehensive set of validation measurements of the Traffic
Speed Deflectometer (TSD) are presented. The measurements took place at the Aurora instrumented road test site in Muonio, Finnish Lapland, at a range of different driving speeds and road temperatures. The ability of the TSD to accurately measure pavement surface response, was validated by comparing the TSD measurements to measurements by in-situ displacement transducers. In addition, a linear viscoelastic back-calculation algorithm was applied to the
TSD measurements to produce estimates of stresses and strains inside the pavement structure. These estimates were compared to measurements by in-situ transducers at the Aurora test site. The tests revealed an excellent agreement between the surface responses measured by the two
systems, and a good agreement between the strains predicted from TSD measurements and the strains measured by in-situ transducers. As expected, the back-calculated moduli of the asphalt were found to increase with driving speed and decrease with temperature.
Original languageEnglish
Title of host publicationProceedings of the Eleventh International Conference on the Bearing Capacity of Roads, Railways and Airfields
EditorsInge Hoff, Helge Mork, Rabbira Saba
Place of PublicationLondon
Pages399-408
Number of pages10
Volume1
Edition1
ISBN (Electronic)9781003222880
DOIs
Publication statusPublished - 2021
Publication typeA4 Article in a conference publication
EventInternational Conference on the Bearing Capacity of Roads, Railways and Airfields - Trondheim, Norway
Duration: 28 Jun 202230 Jun 2022
Conference number: 11
https://www.ntnu.no/bcrra/

Conference

ConferenceInternational Conference on the Bearing Capacity of Roads, Railways and Airfields
Abbreviated titleBCRRA
Country/TerritoryNorway
CityTrondheim
Period28/06/2230/06/22
Internet address

Keywords

  • Traffic Speed Deflectometer, TSD, Aurora, Structural condition, Instrumented pavement

Publication forum classification

  • Publication forum level 2

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