Performance Characterization of Hot In-Place Recycled Asphalt Mixtures
Publication: Journal of Transportation Engineering
Volume 140, Issue 8
Abstract
Despite the widespread use of in-place recycling, limited information is available in the literature on in situ and laboratory properties of materials placed through in-place recycling. The main objectives of present study were to investigate the in situ recycled material characteristic that includes the potential of asphalt mixtures for permanent deformation, fatigue cracking, and low-temperature cracking, and the effect of a special technique of hot in-place recycling and rejuvenation on asphalt binder rheological properties. To accomplish these objectives, a two-phase experimental program was designed to determine the performance-related parameters of 100% in-place recycled mixtures using one of the in-place recycling techniques in which overlay is not needed. The experimental program included the measurement of mixtures’ mechanical properties and binder rheological properties. The present study revealed that the stiffness of the asphalt mixtures after recycling had increased compared to that before recycling. In general, specimens exhibited a low permanent deformation potential of 2–3 mm after 20,000 loading cycles by using the Hamburg wheel-track test. Stable crack propagation could not be obtained in the fracture tests at , which indicates the asphalt mixtures’ brittleness at that temperature. Asphalt binder and aggregates, extracted from the samples as collected at various stages of construction, were characterized to assess the effect of the recycling process on mixtures’ properties. Results obtained from the asphalt binder frequency sweep test indicate an increase in the modulus value, which was primarily caused by a heating process at surface layer. This increase in the modulus value of asphalt binder was efficiently compensated by an addition of a rejuvenator. Alternative additives or rejuvenators may also be considered to improve blending and compatibility between the old and new binder, and to reduce the mixture’s stiffness to avoid any possible premature deterioration. The selected rejuvenator should achieve several goals, including complete blending with existing binder and reducing the combined binder performance grade below the binder performance grade of existing mixes.
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Acknowledgments
This publication is based on the results of the project conducted in cooperation with the Illinois Center for Transportation and the Gallagher Asphalt Corporation. The contents of this project report reflect the view of the authors, who are responsible for the facts and the accuracy of the data presented in this study. The contents do not necessarily reflect the official views or policies of the Illinois Center for Transportation or Gallagher Asphalt Corporation. This report does not constitute a standard, specification, or regulation.
References
Al-Qadi, I. L., et al. (2009). “Determination of usable residual asphalt binder in RAP.”, Illinois Center for Transportation, Univ. of Illinois at Urbana-Champaign, Rantoul, IL.
Al-Qadi, I. L., Aurangzeb, Q., Carpenter, S. H., Pine, W. J., and Trepanier, J. (2012). “Impact of high RAP content on structural and performance properties of asphalt mixtures.”, Illinois Center for Transportation, Univ. of Illinois at Urbana-Champaign, Rantoul, IL.
Asphalt Recycling and Reclaiming Association (ARRA). (2001). Basic asphalt recycling manual, Annapolis, MD.
Brownlee, M. (2011). “Utilization of recycled and reclaimed materials in Illinois highway construction in 2010.”, Illinois Dept. of Transportation Bureau of Materials and Physical Research, Springfield, IL.
Buttlar, W. G., and Roque, R. (1994). “Development and evaluation of the strategic highway research program measurement and analysis system for indirect tensile testing at low temperatures.”, Transportation Research Board, Washington, DC, 163–171.
Carpenter, S. H. (2007). “Dynamic modulus performance of IDOT mixtures.”, Illinois Center for Transportation, Univ. of Illinois at Urbana-Champaign, Rantoul, IL.
Cleaver, L. (2013). “The next generation of hot in-place recycling.” 〈Gallagherasphat.com/newsitems/20130109.http://gallagherasphalt.com/newsitems/20130109〉 (Jan. 9, 2013).
Dave, E. V., Braham, A. F., Buttlar, W. G., Paulino, G. H., and Zofka, A. (2008). “Integration of laboratory testing, field performance data, and numerical simulations for the study of low-temperature cracking.” Proc., 6th RILEM Int. Conf. on Cracking in Pavements, Transportation Research Board, Washington, DC, 369–378.
Hafeez, I., Kamal, M. A., and Ahadi, M. R. (2012a). “Rutting prediction of asphalt mixtures from asphalt cement.” Transp. Res. J., 1(2012), 25–36.
Hafeez, I., Kamal, M. A., and Mahir, M. (2012b). “Characterization of hot mix asphalt using dynamic modulus and wheel tracking test.” Proc. Pak. Acad. Sci., 49(2), 71–77.
Huang, B., Li, G., and Mohammad, L. N. (2003). “Analytical modeling and experimental study of tensile strength of asphalt concrete composite at low temperature.” Composites Part B, 34(8), 705–714.
Huang, L., Cao, K., and Zeng, M. (2009). “Evaluation of semicircular bending test for determining tensile strength and stiffness modulus of asphalt mixtures.” J. Test. Eval., 37(2), 1–7.
Li, X. J., Marasteanu, M. O., Kvasnak, A., Bausano, J., Williams, R. C., and Worel, B. (2010). “Factors study in low-temperature fracture resistance of asphalt concrete.” J. Mater. Civ. Eng., 145–152.
Liu, J. H. (2011). “Fatigue life evaluation of asphalt rubber mixtures using semi-circular bending test.” Adv. Mater. Res., 255(260), 3444–3449.
O’Sullivan, K. (2010). “100 percent recycling—sustainability in pavement construction.” Rep. on 100 percent recycling of asphalt mixes, 〈http://www.irfnews.org/files/pdfs/100_Percent_Recycling_%E2%80%93_Sustainability_in_Pavement_Construction.pdf%20〉 (Aug. 11, 2013).
Ozer, H., Al-Qadi, I. L., and Kanaan, A. (2012). “Laboratory evaluation of high asphalt binder replacement with recycled asphalt shingles (RAS) for a low N-design asphalt mixture.”, Illinois Center for Transportation, Univ. of Illinois at Urbana-Champaign, Rantoul, IL.
Tao, M., and Mallick, R. B. (2009). “An evaluation of the effects of warm mix asphalt additives on workability and mechanical properties of reclaimed asphalt pavement (RAP) material.”, Transportation Research Board, Washington, DC, 151–160.
Witczak, M. W., Kaloush, K., Pellinen, T., Basyouny, M., and Von, Q. H. (2002). “Simple performance test for Superpave mix design.”, Transportation Research Board, National Research Council, Washington, DC.
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Information
Published In
Journal of Transportation Engineering
Volume 140 • Issue 8 • August 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: May 24, 2013
Accepted: Feb 20, 2014
Published online: Apr 28, 2014
Published in print: Aug 1, 2014
Discussion open until: Sep 28, 2014
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