Communications - Scientific Letters of the University of Zilina 2022, 24(1):D1-D8 | DOI: 10.26552/com.C.2022.1.D1-D8

Temperature Correction of Deflections and Backcalculated Elasticity Moduli Determined from Falling Weight Deflectometer Measurements on Asphalt Pavements

Ilja Bøezina ORCID...1, Ondøej Machel ORCID...1, Tomá¹ Zavøel ORCID...1
Transport Research Centre (CDV), Brno, Czech Republic

The evaluation of the bearing capacity of asphalt pavements is usually performed by analysing the deflections measured by a Falling Weight Deflectometer (FWD). The deflection changes with the pavement temperature. In evaluation is necessary to consider the thermal gradient of pavement and perform the temperature correction. The article contains an analysis of effects of the pavement temperature on FWD results on the long-term monitored sections. The temperature correction was performed on measured deflections or back-calculated elasticity moduli. The moduli recalculated to the temperature of 20 °C according to both procedures were similar. Comparison of moduli determined by recalculation to moduli back-calculated from the deflection bowls measured at the temperature of 20 °C, has proven smaller differences for the moduli determined from the deflection bowl corrected to the temperature of 20 °C.

Keywords: asphalt pavement, elasticity modulus, deflection, deflectometer (FWD), temperature correction
Grants and funding:

The research presented in this article was realized with the financial support of the Ministry of Transport of Czech Republic within the programme of long-term conceptual development of research institutions.

Received: March 3, 2021; Accepted: May 13, 2021; Prepublished online: October 18, 2021; Published: January 1, 2022  Show citation

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Bøezina, I., Machel, O., & Zavøel, T. (2022). Temperature Correction of Deflections and Backcalculated Elasticity Moduli Determined from Falling Weight Deflectometer Measurements on Asphalt Pavements. Communications - Scientific Letters of the University of Zilina, 24(1), D1-8. doi: 10.26552/com.C.2022.1.D1-D8
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