Resilient Moduli of Reclaimed Asphalt Pavement Aggregate Subbase Blends
Publication: Journal of Materials in Civil Engineering
Volume 28, Issue 5
Abstract
This paper investigates the resilient moduli of reclaimed asphalt pavement (RAP) and virgin aggregate blends obtained from the subbase of a segment of Route 165 in Rhode Island, U.S. The materials included RAP and virgin aggregates that were blended off-site using cold recycled RAP, as well as RAP blends that were generated in situ from full-depth reclamation (FDR). Cyclic triaxial tests were performed on compacted specimens of the RAP blends to assess their resilient modulus () behavior. Selected FDR RAP blends were mixed with various stabilizer treatments including liquid calcium chloride, asphalt emulsion, or portland cement. A three-parameter material model was fit to the laboratory test data and used to interpret the behavior. The values of the untreated cold recycled RAP blends and the untreated FDR RAP blends ranged from 120 to 502 MPa and 171 to 578 MPa, respectively. The values of the calcium chloride-treated and asphalt emulsion-treated FDR RAP blends were within the range of the untreated FDR RAP blends, but permanent strains were higher. The values of the portland cement-treated FDR RAP blends were significantly higher than the untreated FDR RAP blends and had lower permanent strains.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The authors gratefully acknowledge funding provided by the Rhode Island Department of Transportation (RIDOT) and the University of Rhode Island Transportation Center (URITC) (Grant No. S000154). The authors would also like to thank Robert Snyder of RIDOT for his assistance with the analysis of the physical properties.
References
AASHTO. (1999). “Determining the resilient modulus of soils and aggregate materials.” T 307, Washington, DC.
AASHTO. (2010a). “Correction for coarse particles in the soil compaction test.” T 224, Washington, DC.
AASHTO. (2010b). “Determining the asphalt binder content of hot mix asphalt (HMA) by the ignition method.” T 308, Washington, DC.
AASHTO. (2014a). “Calcium chloride.” M 144, Washington, DC.
AASHTO. (2014b). “Sieve analysis of fine and coarse aggregates.” T 27, Washington, DC.
AASHTO. (2014c). “Specific gravity and absorption of coarse aggregate.” T 85, Washington, DC.
AASHTO. (2015). “Moisture-density relations of soils using a 4.54-kg (10-lb) rammer and a 457-mm (18-in.) drop.” T 180, Washington, DC.
Alam, T. B., Abdelrahman, M., and Schram, S. A. (2010). “Laboratory characterization of recycled asphalt pavement as a base layer.” Int. J. Pavement Eng., 11(2), 123–131.
Attia, M., and Abdelrahman, M. (2010). “Sensitivity of untreated reclaimed asphalt pavement to moisture, density, and freeze thaw.” J. Mater. Civ. Eng., 1260–1269.
Bleakley, A., and Consentino, P. (2013). “Improving properties of reclaimed asphalt pavement for roadway base applications through blending and chemical stabilization.” Transp. Res. Rec., 2335, 20–28.
Copeland, A., Jones, C., and Bukowski, J. (2010). “Reclaiming roads.”, Federal Highway Administration, Washington, DC.
Kim, W., Labuz, J. F., and Dai, S. (2007). “Resilient modulus of base course containing recycled asphalt pavement.” Transp. Res. Rec., 2005, 27–35.
Lee, K. W., Houston, M. T., Davis, J., and Vijjhalla, S. (2001). “Structural analysis of New England subbase materials and structures.” New England Transportation Consortium Storrs, CT.
NCHRP (National Cooperative Highway Research Program). (2004). “Guide for mechanistic-empirical design of new and rehabilitated pavement structures.” 〈http://onlinepubs.trb.org/onlinepubs/archive/mepdg/guide.htm〉 (Jun. 2013).
Nokkaew, K., Tinjum, J. M., Likos, W. J., and Edil, T. B. (2014). “Effect of matric suction on resilient modulus for compacted recycled base course in postcompaction state.” Transp. Res. Rec., 2433, 68–78.
Puppala, A. J., Hoyos, L. R., and Potturi, A. K. (2011). “Studies on resilient moduli response of moderately cement-treated reclaimed asphalt pavement aggregates.” J. Mater. Civ. Eng., 990–998.
RIDOT (Rhode Island Department of Transportation). (2012). “Job-specific specifications, route 165 reclamation, contract 2012-CH-018.” Portsmouth, RI.
Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 28 • Issue 5 • May 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Aug 18, 2014
Accepted: Oct 16, 2015
Published online: Dec 31, 2015
Published in print: May 1, 2016
Discussion open until: May 31, 2016
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.