Back-Calculation of the Moduli of Asphalt Pavement Layer Using Accelerated Pavement Testing Data
The modulus of asphalt mixture is traditionally measured from the laboratory dynamic modulus test. However, different laboratory test methods often lead to obviously different test results. To evaluate the moduli of asphalt mixtures as constructed in field pavements, this study back-calculated the moduli of the pavement layers, based on measured strain data in Accelerated Pavement Testing (APT). Field tests were conducted to measure strains at different locations of the built pavement section at different temperatures and wheel motion speed. The loading frequencies of the asphalt layer subject to different motion speeds were calculated based on the duration of measured strain pulses. Subsequently, the relationship between the motion speed and the loading frequency was established. An finite element (FE) model of the pavement section was created, which was used to back-calculate the moduli of asphalt pavement layers using the measured strain data. Based on the back-calculation results at different loading conditions, the master curve of the field asphalt layer was determined. This master curve was further used to compare with that obtained from laboratory uniaxial compressive test. The relationship between the field and laboratory moduli was determined to be ELaboratory= 1.298EField.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/9783030552350
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Supplemental Notes:
- © Springer Nature Switzerland AG 2020.
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Authors:
- Cheng, Huailei
- Wang, Yuhong
- Liu, Liping
- Sun, Lijun
- Hu, Yue
- Li, Yi
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Conference:
- 6th International Conference on Accelerated Pavement Testing
- Location: Nantes , France
- Date: 2022-4-4 to 2022-4-6
- Publication Date: 2020
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 379-388
- Monograph Title: Accelerated Pavement Testing to Transport Infrastructure Innovation : Proceedings of 6th APT Conference
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Serial:
- Lecture Notes in Civil Engineering
- Volume: 96
- Publisher: Springer Singapore
- ISSN: 2366-2557
- EISSN: 2366-2565
- Serial URL: https://www.springer.com/series/15087
Subject/Index Terms
- TRT Terms: Accelerated tests; Asphalt pavements; Backcalculation; Dynamic modulus of elasticity; Finite element method; Pavement layers
- Subject Areas: Data and Information Technology; Highways; Pavements;
Filing Info
- Accession Number: 01878169
- Record Type: Publication
- ISBN: 9783030552350
- Files: TRIS
- Created Date: Mar 31 2023 1:06PM