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.
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 language | English |
|---|---|
| Title of host publication | Proceedings of the Eleventh International Conference on the Bearing Capacity of Roads, Railways and Airfields |
| Editors | Inge Hoff, Helge Mork, Rabbira Saba |
| Place of Publication | London |
| Pages | 399-408 |
| Number of pages | 10 |
| Volume | 1 |
| Edition | 1 |
| ISBN (Electronic) | 9781003222880 |
| DOIs | |
| Publication status | Published - 2021 |
| Publication type | A4 Article in a conference publication |
| Event | International Conference on the Bearing Capacity of Roads, Railways and Airfields - Trondheim, Norway Duration: 28 Jun 2022 → 30 Jun 2022 Conference number: 11 https://www.ntnu.no/bcrra/ |
Conference
| Conference | International Conference on the Bearing Capacity of Roads, Railways and Airfields |
|---|---|
| Abbreviated title | BCRRA |
| Country/Territory | Norway |
| City | Trondheim |
| Period | 28/06/22 → 30/06/22 |
| Internet address |
Keywords
- Traffic Speed Deflectometer, TSD, Aurora, Structural condition, Instrumented pavement
Publication forum classification
- Publication forum level 2