Correlating the asphalt-binder MSCR test results to the HMA HWTT and field rutting performance

Walubita, LFLing, MFuentes, LKomba, Julius JMabrouk, GM2022-10-032022-10-032022-09Walubita, L., Ling, M., Fuentes, L., Komba, J.J. & Mabrouk, G. 2022. Correlating the asphalt-binder MSCR test results to the HMA HWTT and field rutting performance. Journal of Transportation Engineering, Part B: Pavements, 148(3). http://hdl.handle.net/10204/124982573-5438https://doi.org/10.1061/JPEODX.000038http://hdl.handle.net/10204/12498Asphalt binder is one of the key constitutive components of hot-mix asphalt (HMA) that considerably affects its rutting performance. In particular, the high-temperature rheological properties measured from the multiple stress creep and recovery (MSCR) test are critical for correlating to the HMA rutting resistance. In this study, the Texas flexible pavements and overlays database was used as the data source to investigate the effect of asphalt-binder high-temperature rheological properties on the HMA rutting resistance. The study methodology was based on correlating the results of the MSCR test and the Hamburg wheel-tracking test (HWTT) to HMA field rutting performance. The data matrix for the study included asphalt binder (PG 64-22) from three different sources, three widely used Texas HMA mixes (fine gradation to coarse gradation), and five in-service highway test sections constructed using the same asphalt binders and HMA mixes. In general, the MSCR nonrecoverable creep compliance parameter, Jnrdiff, showed fairly strong correlations with the HMA rutting performance in the laboratory and field. The percent recovery parameter (R), on the other hand, exhibited the potential to ascertain and quantify the presence of modifiers in the asphalt binders. Furthermore, the test results indicated that material source/supplier has an impact on the rheological properties of the asphalt binders with the same performance grade (PG). Overall, the use of the MSCR test to quantify the asphalt-binder high-temperature rheological properties indicated the potential to compliment the laboratory HWTT test for correlating with the field HMA rutting performance in terms of the effects of asphalt binder.FulltextenAsphalt-binder rheologyHot-mix asphaltHMAMultiple Stress Creep RecoveryMSCRRuttingHamburg Wheel Tracking TestHWTTField rutting performanceCorrelating the asphalt-binder MSCR test results to the HMA HWTT and field rutting performanceArticleWalubita, L., Ling, M., Fuentes, L., Komba, J. J., & Mabrouk, G. (2022). Correlating the asphalt-binder MSCR test results to the HMA HWTT and field rutting performance. Journal of Transportation Engineering, Part B: Pavements, 148(3), http://hdl.handle.net/10204/12498Walubita, LF, M Ling, L Fuentes, Julius J Komba, and GM Mabrouk "Correlating the asphalt-binder MSCR test results to the HMA HWTT and field rutting performance." Journal of Transportation Engineering, Part B: Pavements, 148(3) (2022) http://hdl.handle.net/10204/12498Walubita L, Ling M, Fuentes L, Komba JJ, Mabrouk G. Correlating the asphalt-binder MSCR test results to the HMA HWTT and field rutting performance. Journal of Transportation Engineering, Part B: Pavements, 148(3). 2022; http://hdl.handle.net/10204/12498.TY - Article AU - Walubita, LF AU - Ling, M AU - Fuentes, L AU - Komba, Julius J AU - Mabrouk, GM AB - Asphalt binder is one of the key constitutive components of hot-mix asphalt (HMA) that considerably affects its rutting performance. In particular, the high-temperature rheological properties measured from the multiple stress creep and recovery (MSCR) test are critical for correlating to the HMA rutting resistance. In this study, the Texas flexible pavements and overlays database was used as the data source to investigate the effect of asphalt-binder high-temperature rheological properties on the HMA rutting resistance. The study methodology was based on correlating the results of the MSCR test and the Hamburg wheel-tracking test (HWTT) to HMA field rutting performance. The data matrix for the study included asphalt binder (PG 64-22) from three different sources, three widely used Texas HMA mixes (fine gradation to coarse gradation), and five in-service highway test sections constructed using the same asphalt binders and HMA mixes. In general, the MSCR nonrecoverable creep compliance parameter, Jnrdiff, showed fairly strong correlations with the HMA rutting performance in the laboratory and field. The percent recovery parameter (R), on the other hand, exhibited the potential to ascertain and quantify the presence of modifiers in the asphalt binders. Furthermore, the test results indicated that material source/supplier has an impact on the rheological properties of the asphalt binders with the same performance grade (PG). Overall, the use of the MSCR test to quantify the asphalt-binder high-temperature rheological properties indicated the potential to compliment the laboratory HWTT test for correlating with the field HMA rutting performance in terms of the effects of asphalt binder. DA - 2022-09 DB - ResearchSpace DP - CSIR J1 - Journal of Transportation Engineering, Part B: Pavements, 148(3) KW - Asphalt-binder rheology KW - Hot-mix asphalt KW - HMA KW - Multiple Stress Creep Recovery KW - MSCR KW - Rutting KW - Hamburg Wheel Tracking Test KW - HWTT KW - Field rutting performance LK - https://researchspace.csir.co.za PY - 2022 SM - 2573-5438 T1 - Correlating the asphalt-binder MSCR test results to the HMA HWTT and field rutting performance TI - Correlating the asphalt-binder MSCR test results to the HMA HWTT and field rutting performance UR - http://hdl.handle.net/10204/12498 ER -26016