Multiscale Evaluation of the Composite Asphalt Binder in High–Reclaimed Asphalt Pavement Mixtures
Publication: Journal of Materials in Civil Engineering
Volume 26, Issue 7
Abstract
In this paper, various nanomechanical and macromechanical techniques were used to study the effect of a reclaimed asphalt pavement (RAP) binder on the microstructure and properties of a virgin asphalt binder and to evaluate the degree of blending that occurs between those binders. To this end, different atomic force microscopy (AFM) experiments (i.e., AFM tapping mode imaging, AFM nanoindentation, AFM force spectroscopy experiments) were conducted on a virgin asphalt binder, a recovered RAP binder, and their composite. In addition, dynamic shear rheometer (DSR) tests were conducted on the evaluated binders, and the dynamic modulus tests were performed on mixtures prepared using those binders to evaluate the degree of RAP blending and compare it with those obtained using the AFM test results. The results of the AFM images indicated that blending between the RAP and virgin binders occurs at the nano/microscale level in the composite binder at a fairly uniform manner. Furthermore, the nanoindentation test results indicated that the composite asphalt binder had a significantly lower modulus than the RAP binder and closer to the virgin binder; however, the virgin binder modulus was still significantly lower than that of the composite. The force spectroscopy results indicated that the RAP had adverse effects on the adhesion properties of the composite binder. The results of the DSR tests showed similar trends to that observed using the AFM nanoindentation results; however, the DSR was found to underestimate the effect of the RAP binder on the mechanical properties of the composite. Finally, the AFM test results suggested that about 85% of RAP was effective in the composite.
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References
Agilent Technologies. (2008). Agilent 5500 LS AFM/SPM user manual, Palo Alto, CA.
American Association of State Highway and Transportation Officials (AASHTO). (2010). 2010 AASHTO provisional standards, 14th Ed., Washington, DC.
Anderson, D., Christensen, D., and Bahia, H. (1991). “Physical properties of asphalt cement and the development of performance related specifications.” J. Assoc. Asphalt Paving Technol., 60, 437–532.
Bhushan, B., and Qi, J. (2003). “Phase contrast imaging of nanocomposites and molecularly thick lubricant films in magnetic media.” Nanotech., 14(8), 886–895.
Bonaquist, R. (2005). Laboratory evaluation of hot mix asphalt (HMA) mixtures containing recycled or waste product materials using performance testing, Pennsylvania Dept. of Transportation, Office of Planning and Research, Harrisburg, PA.
Cao, X., Lei, Y., and Wang, W. (2010). “Study on thermal oxidation of asphalt fractions by in situ FTIR analysis.” Adv. Mater. Res., 160–162, 330–335.
Carbognani, L., DeLima, L., Orea, M., and Ehrmann, U. (2000). “Studies of large crude oil alkanes. II. Isolation and characterization of aromatic waxes and waxy asphaltenes.” Petrol. Sci. Technol., 18, 607–634.
Christensen, D., and Anderson, D. (1992). “Interpretation of dynamic mechanical test data for paving grade asphalt.” J. Assoc. Asphalt Paving Technol., 61, 67–116.
Cleveland, J., Anczykowsk, B., Schmid, A., and Elings, V. (1998). “Energy dissipation in tapping-mode atomic force microscopy.” Appl. Phys. Lett., 72, 2613–2615.
Copeland, A. (2011). Reclaimed asphalt pavement in asphalt mixtures: State of the practice, Turner-Fairbank Highway Research Center, Federal Highway Administration, McLean, VA.
Daniel, J. S., Pochily, J., and Boisvert, D. (2010). “Can more reclaimed asphalt pavement be added? Study of extracted binder properties from plant-produced mixtures with up to 25% reclaimed asphalt pavement.” J. Transp. Res. Board, (2180), 19–29.
Ferry, J. D. (1980). Viscoelastic properties of polymers, Wiley, New York.
Fischer-Cripps, A. C. (2006). “Critical review of analysis and interpretation of nanoindentation test data.” Surf. Coat. Technol., 200(14–15), 4153–4165.
Huang, B., Li, G., Vukosavljevic, D., Shu, X., and Egan, B. K. (2005). “Laboratory investigation of mixing HMA with reclaimed asphalt pavement.” J. Transp. Res. Board, 1929, 37–45.
Li, X., Marasteanu, M. O., Williams, R. C., and Clyne, T. R. (2008). “Effect of reclaimed asphalt pavement (proportion and type) and binder grade on asphalt mixtures.” J. Transp. Res. Board, 2051, 90–97.
Masson, J.-F., Leblond, V., and Margeson, J. (2006). “Bitumen morphologies by phase detection atomic force microscopy.” J. Microsc., 221, 17–29.
McDaniel, R., Shah, A., Huber, G., and Gallivan, V. (2007). “Investigation of properties of plant-produced RAP mixtures.” J. Transp. Res. Board, (1998), 103–111.
Nazzal, M., Kaya, S., and Abu-Qtaish, L. (2012). “Evaluation of the healing properties of WMA using atomic force microscopy.” 7th RILEM Int. Conf. Cracking Pavements, Vol. 4, Springer.
Nguyen, T., et al. (2005). “Mapping chemical heterogeneity of polymeric materials with chemical force microscopy.” Polym. Mater. Sci. Eng., 90, 141–143.
Oliver, W. C., and Pharr, G. M. (2004). “Measurement of hardness and elastic modulus by instrumented indentation: Advances in understanding and refinements to methodology.” J. Mater. Res., 19(1), 3–20.
Petersen, J. C. (1984). “Chemical composition of asphalt as related to asphalt durability: State of the art.” Transp. Res. Board, 999, 13–30.
Rowe, R., and Sharrock, M. (2011). “Alternate shift factor relationship for describing the temperature dependency of the visco-elastic behavior of asphalt materials.” Transport. Res. Board 90th Annual Meeting Compendium of Papers, Transportation Research Board of the National Academies, Washington, DC.
SAS Institute. (2004). SAS OnlineDoc 9.1.2, Cary, NC.
Tamayo, J., and Garcia, R. (1998). “Relationship between phase shift and energy dissipation in tapping-mode scanning force microscopy.” Appl. Phys. Lett., 73, 2926–2928.
Tranchida, D., Piccarolo, S., Loos, J., and Alexeev, A. (2006). “Accurately evaluating Young’s modulus of polymers through nanoindentations: A phenomenological correction factor to the Oliver and Pharr procedure.” Appl. Phys. Lett., 89(17), 171905.
Wu, S. P., Pang, L., Mo, L. T., Chen, Y. C., and Zhu, G. J. (2010). “Influence of aging on the evolution of structure, morphology, and rheology of base and SBS-modified bitumen.” J. Constr. Build. Mater., 23, 1005–1010.
Zhang, H., Wang, H., and Yu, J. (2011). “Effect of aging on morphology of organo-montmorillonite modified bitumen by atomic force microscopy.” J. Microsc., 242, 37–45.
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Published In
Journal of Materials in Civil Engineering
Volume 26 • Issue 7 • July 2014
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Oct 29, 2012
Accepted: Mar 28, 2013
Published online: Mar 28, 2014
Published in print: Jul 1, 2014
Discussion open until: Aug 28, 2014
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