Rutting Performance Prediction Using Index-Volumetrics Relationships with Stress Sweep Rutting Test and Hamburg Wheel-Track Test
This paper describes a methodology to develop index-volumetrics relationships (IVRs) of asphalt mixtures. These relationships are developed from rutting performance test results and the volumetric properties of the mixture in question at so-called ‘four corners’ of the volumetric space. Two rutting tests, the stress sweep rutting (SSR) test and Hamburg wheel-track (HWT) test, were employed to characterize the rutting performance of two mixtures acquired from two field projects. The index parameters for the two rutting tests are the Rutting Strain Index (RSI) values determined from SSR tests and the rut depths at the end of 20,000 cycles determined from HWT tests. These index parameter values from the two tests of the same mixture samples correlated well and showed similar trends as a function of the test samples’ volumetric properties, i.e., voids in mineral aggregate and voids filled with asphalt. The IVRs for the individual mixtures and test methods were developed and used to predict the mixtures’ rutting performance as a function of the two volumetric properties. The IVRs were able to predict the effect of air void content on rutting performance but were unable to capture the effect of binder content because the tested specimens used in the IVR calibration contained a wide range of air void content and narrow range of binder content, respectively. Note that the narrow range of the binder content is unchangeable in the plant-produced mixture samples used in this study, whereas the air void content could be changed simply by adjusting the laboratory compaction level.
- Record URL:
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Supplemental Notes:
- This paper was sponsored by TRB committee AKM40 Standing Committee on Asphalt Mixture Evaluation and Performance.
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Corporate Authors:
Transportation Research Board
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Authors:
- Jeong, Jaehoon
- Underwood, B Shane
- Kim, Y Richard
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Conference:
- Transportation Research Board 100th Annual Meeting
- Location: Washington DC, United States
- Date: 2021-1-5 to 2021-1-29
- Date: 2021
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: 22p
Subject/Index Terms
- TRT Terms: Air voids; Asphalt concrete pavements; Asphalt mixtures; Field studies; Mineral aggregates; Pavement performance; Rutting
- Identifier Terms: FlexPAVE (Computer program); Hamburg Wheel Tracking Device; Stress Sweep Rutting Test
- Subject Areas: Highways; Materials; Pavements;
Filing Info
- Accession Number: 01763644
- Record Type: Publication
- Report/Paper Numbers: TRBAM-21-03800
- Files: TRIS, TRB, ATRI
- Created Date: Feb 4 2021 10:57AM