Composition Migration and Grading Rules of Agglomerate in Reclaimed Asphalt Pavement
Publication: Journal of Materials in Civil Engineering
Volume 36, Issue 5
Abstract
To study the composition and migration of agglomerate in reclaimed asphalt pavement (RAP), two different RAPs were selected, and the aging performance of RAPs was evaluated. Then, the RAPs were sieved into a single particle size from 13.2 to 0.075 mm, and hot-mix and extraction tests were carried out on the RAPs with single particle sizes. Through the comparative analysis of gradations of the hot mixing and extraction of RAPs with single particle sizes, the composition and its migration rule of agglomerates of RAPs were analyzed. The thickness of gradation (TG), thickness of gradation ratio (TGR), degree of separation (DS), and degree of separation ratio (DSR) were proposed to evaluate the fragmentation characteristics of RAP agglomerates with single particle sizes. According to the DS index, the grading standard of RAP agglomerates was determined. The results show that the agglomerate of RAP at each particle size is mainly composed of the mineral aggregate of the initial particle size of RAP, the aggregate with one gradation lower than the initial particle size, and other aggregates with smaller and finer content. During the hot mixing, the RAP with the single particle size larger than 2.36 mm mainly undergoes old agglomerate fragmentation, whereas RAP with the single particle size will not only break into small particles, but also integrate new agglomerates. The RAP agglomerates can be divided into strongly bound agglomerates and weakly bound agglomerates according to whether they will be broken and separated during hot mixing. With the decrease of particle size of RAP, the proportion of strongly bound agglomerates gradually rises, whereas the proportion of weakly bound agglomerates declines.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This work is supported by the Science and Technology Project of Shandong Provincial Department of Transportation (2020B18), the Fundamental Research Funds for the Central Universities, CHD (300102212913 and 300102212707). The authors gratefully acknowledge their financial support. Also, the authors would like to thank the financial support to this research from the China Scholarship Council (CSC).
References
Bressi, S., M. C. Cavalli, M. N. Partl, G. Tebaldi, A. G. Dumont, and L. D. Poulikakos. 2015a. “Particle clustering phenomena in hot asphalt mixtures with high content of reclaimed asphalt pavements.” Constr. Build. Mater. 100 (Dec): 207–217. https://doi.org/10.1016/j.conbuildmat.2015.09.052.
Bressi, S., A. G. Dumont, and M. N. Partl. 2016a. “A new laboratory methodology for optimization of mixture design of asphalt concrete containing reclaimed asphalt pavement material.” Mater. Struct. 49 (12): 4975–4990. https://doi.org/10.1617/s11527-016-0837-1.
Bressi, S., A. G. Dumont, and M. Pittet. 2015b. “Cluster phenomenon and partial differential aging in RAP mixtures.” Constr. Build. Mater. 99 (Nov): 288–297. https://doi.org/10.1016/j.conbuildmat.2015.09.024.
Bressi, S., M. Pittet, A. G. Dumont, and M. N. Partl. 2016b. “A framework for characterizing RAP clustering in asphalt concrete mixtures.” Constr. Build. Mater. 106 (Mar): 564–574. https://doi.org/10.1016/j.conbuildmat.2015.12.132.
Debbarma, S., and G. D. R. N. Ransinchung. 2021. “Achieving sustainability in roller compacted concrete pavement mixes using reclaimed asphalt pavement aggregates-State of the art review.” J. Cleaner Prod. 287 (Mar): 125078. https://doi.org/10.1016/j.jclepro.2020.125078.
Debbarma, S., M. Selvam, and S. Singh. 2020. “Can flexible pavements’ waste (RAP) be utilized in cement concrete pavements?—A critical review.” Constr. Build. Mater. 259 (Oct): 120417. https://doi.org/10.1016/j.conbuildmat.2020.120417.
Fang, Z. Y. 2019. Research on high modulus asphalt mixing technology with plant mixing hot regeneration. Nanjing, China: Southeast Univ.
Huang, B. S., X. Shu, and E. G. Burdette. 2006. “Mechanical properties of concrete containing recycled asphalt pavements.” Mag. Concr. Res. 58 (5): 313–320. https://doi.org/10.1680/macr.2006.58.5.313.
Jacobs, G., A. Margaritis, D. Hernando, L. He, J. Blom, and W. Van den Bergh. 2021. “Influence of soft binder and rejuvenator on the mechanical and chemical properties of bituminous binders.” J. Cleaner Prod. 287 (Mar): 125596. https://doi.org/10.1016/j.jclepro.2020.125596.
Kriz, P., D. L. Grant, B. A. Veloza, M. J. Gale, A. G. Blahey, J. H. Brownie, R. D. Shirts, and S. Maccarrone. 2014. “Blending and diffusion of reclaimed pavement and virgin asphalt binders.” Supplement, Road Mater. Pavement Des. 15 (S1): 78–112. https://doi.org/10.1080/14680629.2014.927411.
Li, N., Q. Jiang, F. S. Wang, P. D. Cui, J. Xie, J. S. Li, S. P. Wu, and D. M. Barbieri. 2021. “Comparative assessment of asphalt volatile organic compounds emission from field to laboratory.” J. Cleaner Prod. 278 (Jan): 123479. https://doi.org/10.1016/j.jclepro.2020.123479.
Ling, H. J., D. X. Wang, H. E. Bai, and K. H. Wu. 2008. “Evaluation and control on conglomeration of RAP in cold recycling project of asphalt concrete pavement.” [In Chinese.] Highway 11 (May): 5.
Ma, T., X. M. Huang, Y. Zhao, Y. Zhang, and H. Wang. 2016. “Influences of preheating temperature of RAP on properties of hot-mix recycled asphalt mixture.” J. Test. Eval. 44 (2): 762–769. https://doi.org/10.1520/JTE20150157.
Ma, Y., P. Polaczyk, W. Hu, M. Zhang, and B. Huang. 2021. “Quantifying the effective mobilized RAP content during hot in-place recycling techniques.” J. Cleaner Prod. 314 (Sep): 127953. https://doi.org/10.1016/j.jclepro.2021.127953.
Moins, B., D. Hernando, M. Buyle, C. France, V. Wim, and A. Audenaert. 2022. “On the road again! An economic and environmental break-even and hotspot analysis of reclaimed asphalt pavement and rejuvenators.” Resour. Conserv. Recycl. 177 (Feb): 106014. https://doi.org/10.1016/j.resconrec.2021.106014.
Mukhopadhyay, A. K., and X. J. Shi. 2019. “Microstructural characterization of Portland cement concrete containing reclaimed asphalt pavement aggregates using conventional and advanced petrographic techniques.” Adv. Cem. Anal. Concr. Petrography 1613 (Mar): 187–206. https://doi.org/10.1520/STP161320180008.
Nandi, S., and R. N. G. D. Ransinchung. 2022. “Laboratory investigation of portland cement concrete paver blocks made with reclaimed asphalt pavement aggregates.” Road Mater. Pavement Des. 23 (3): 546–564. https://doi.org/10.1080/14680629.2020.1830153.
Nandi, S., and R. N. G. D. Ransinchung. 2023. “Performance characteristics of concrete paver blocks incorporating individual and combined fractions of reclaimed asphalt pavement aggregates under different curing regimes.” J. Mater. Civ. Eng. 35 (4): 04023017. https://doi.org/10.1061/(ASCE)MT.1943-5533.0004680.
Navaro, J., D. Bruneau, I. Drouadaine, J. Colin, A. Dony, and J. Cournet. 2012. “Observation and evaluation of the degree of blending of reclaimed asphalt concretes using microscopy image analysis.” Constr. Build. Mater. 37 (Dec): 135–143. https://doi.org/10.1016/j.conbuildmat.2012.07.048.
Nazzal, M. D., W. Mogawer, A. Austerman, L. A. Qtaish, and S. Kaya. 2015. “Multi-scale evaluation of the effect of rejuvenators on the performance of high RAP content mixtures.” Constr. Build. Mater. 101 (Dec): 50–56. https://doi.org/10.1016/j.conbuildmat.2015.10.029.
Rad, F. Y., N. R. Sefidmazgi, and H. Bahia. 2014. “Application of diffusion mechanism degree of blending between fresh and recycled asphalt pavement binder in dynamic shear rheometer.” Transp. Res. Rec. 2444 (1): 71–77. https://doi.org/10.3141/2444-08.
Singh, S., G. D. R. N. Ransinchung, and P. Kumar. 2019. “Feasibility study of RAP aggregates in cement concrete pavements.” Road Mater. Pavement Des. 20 (1): 151–170. https://doi.org/10.1080/14680629.2017.1380071.
Wang, H. N., R. Zhang, Y. Chen, Z. P. You, and J. Fang. 2016. “Study on microstructure of rubberized recycled hot mix based X-ray CT technology.” Constr. Build. Mater. 121 (Sep): 177–184. https://doi.org/10.1016/j.conbuildmat.2016.05.166.
Xu, G. J., T. Ma, Z. Y. Fang, X. M. Huang, and W. G. Zhang. 2019. “The evaluation method of particle clustering phenomena in RAP.” Appl. Sci. 9 (3): 424. https://doi.org/10.3390/app9030424.
Yang, C., et al. 2022. “Enhanced induction heating and self-healing performance of recycled asphalt mixtures by incorporating steel slag.” J. Cleaner Prod. 366 (Sep): 132999. https://doi.org/10.1016/j.jclepro.2022.132999.
Yang, J., W. Tao, J. Gao, D. Yu, J. Zhou, L. He, and Y. Yao. 2021. “Measurement of particle agglomeration and aggregate breakdown of reclaimed asphalt pavement.” Constr. Build. Mater. 296 (Aug): 123681. https://doi.org/10.1016/j.conbuildmat.2021.123681.
Zaumanis, M., J. Oga, and V. Haritonovs. 2018. “How to reduce reclaimed asphalt variability: A full-scale study.” Constr. Build. Mater. 188 (Nov): 546–554. https://doi.org/10.1016/j.conbuildmat.2018.08.137.
Zhang, K., F. Huchet, and A. Hobbs. 2019. “A review of thermal processes in the production and their influences on performance of asphalt mixtures with reclaimed asphalt pavement (RAP)” Constr. Build. Mater. 206 (Mar): 609–619. https://doi.org/10.1016/j.conbuildmat.2019.02.057.
Zhu, J. Q., T. Ma, and Z. Y. Fang. 2020. “Characterization of agglomeration of reclaimed asphalt pavement for cold recycling.” Constr. Build. Mater. 240 (Apr): 117912. https://doi.org/10.1016/j.conbuildmat.2019.117912.
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Published In
Journal of Materials in Civil Engineering
Volume 36 • Issue 5 • May 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Aug 18, 2023
Accepted: Oct 27, 2023
Published online: Feb 24, 2024
Published in print: May 1, 2024
Discussion open until: Jul 24, 2024
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