Laboratory Investigations on the Utilization of Recycled Construction Aggregates in Asphalt Mixtures
Road networks are increasingly expanding all over the world. The construction and maintenance of the road pavements require large amounts of aggregates. Considerable usage of various natural aggregates for constructing roads as well as the increasing rate at which solid waste is generated have attracted the attention of many researchers in the pavement industry to investigate the feasibility of the application of some of the waste materials as alternative materials in pavement construction. Among various waste materials, construction and demolition wastes, including Recycled Construction Aggregate (RCA) constitute a major part of the municipal solid wastes in Australia. Creating opportunities for the application of RCA in civil and geotechnical engineering applications is an efficient way to increase the market value of RCA. However, in spite of such promising potentials, insufficient and inconclusive data and information on the engineering properties of RCA had limited the reliability and design specifications of RCA to date. In light of this, this paper, as a first step of a comprehensive research, aims to investigate the feasibility of the application of RCA obtained from construction and demolition wastes for the replacement of part of coarse aggregates in asphalt mixture. As the suitability of aggregates for using in asphalt mixtures is determined based on the aggregate characteristics, including physical and mechanical properties of the aggregates, an experimental program is set up to evaluate the physical and mechanical properties of RCA. This laboratory investigation included the measurement of compressive strength and workability of RCA, particle shape, water absorption, flakiness index, crushing value, deleterious materials and weak particles, wet/dry strength variation, and particle density. In addition, the comparison of RCA properties with virgin aggregates has been included as part of this investigation and this paper presents the results of these investigations on RCA, basalt, and the mix of RCA/basalt.
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 Arulrajah, A., J. Piratheepan, M. W. B., & Sivakugan, N. (2012). "Geotechnical characteristics of recycled crushed brick blends for pavement subbase applications". Canadian Geotechnical Journal, 49, 796-811.
 Bennert, T., Papp, W. J., Maher, A., & Gucunski, N. (2000). "Utilization of construction and demolition debris under traffic - type loading in base and subbase applications". Transportation research record 33-39.
 Berthelot, C., Haichert, R., Podborochynski, D., Wandzura, C., Taylor, B., & Gunther, D. (2010). "Mechanistic laboratory evaluation and field construction of recycled concrete materials for use in road substructures". Transport research board, 41 - 52.
 Blankenagel, B. J. (2005). Characterization of recycled concrete for use as pavement base material, .Master of Science, Brigham Young University.
 Brown, E.R., and Bassett, C.E. (1990). Effects of Maximum Aggregate Siza on Rutting Potential and Other Properties of Asphalt- Aggregate Mixtures, Transportation Research Board.
 Brown, E.R., McRae, J.L., and Crawley, A.B. (1989). “Effect of Aggregate on Performance of Bituminous Concrete”, ASTM STP 1016, Philadelphia, 34-63.
 Button, J.W., Perdomo, D., and Lytton, R.L. (1990). Influence of Aggregate on Rutting in Asphalt Concrete Pavements, Transportation Research Board.
 Celauro, C., Benardo, C. and Gabriele, B. (2010), “Production of innovative, recycled and high-performance asphalt for road pavements”, Resource Conservation Recycling Journal, 54 (6), 337-347.
 Chen, J.S., and Liao, M.S. (2002). Evaluation of Internal Resistance in Hot-Mix Asphalt (HMA) Concrete, Construction and Building Materials Journal, 16 (6), 313-319.
 Conceicao, F. d., Motta, r. d. S., Vasconcelos, K. L., & B ernucci, L. (2011). "Laboratory evaluation of recycled construction and demolition waste for pavements". Construction and building materials 25.
 Dahir, S. (1979). “A Review of Aggregate Selection Criteria for Improved Wear Resistance and Skid Resistance of Bituminous Surfaces”. Journal of Testing and Evaluation, 7, 245- 253.
 Dickinson, E.J. (1984). Bituminous Roads in Australia. Australian Road Research Board, Melbourne, Australia.
 Elliot, R.P., Ford, M.C., Ghanim, M., and Tu, Y.F. (1991). Effect of Aggregate Gradation Variation on Asphalt Concrete Mix Properties, Transportation Research Record 1317.
 Hossain, M., Metcalf, D. G. and Scofield, L. A., (1993), “Performance of recycled asphalt concrete overlays in Southwestern Arizona”, Transportation Research Record, 1427, 30-37.
 Jayakody, S., Gallage, C., and Kumar, A. (2014), “Assessment of recycled concrete aggregates as a pavement material”, Geomechanics and Engineering, 6(3).
 Jiménez, J. R., Ayuso, J., Agrela, F., López, M., and Galvín, A. P. (2012). "Utilization of unbound recycled aggregates from selected CDW in unpaved rural roads". Journal of Resources, Conservation and Recycling, 58, 88 - 97.
 Jr, W. J. P., Maher, M. H., Bennert, T. A., & Gucunski, N. (1998). Behavior of construction and demolition debris in base and subbase applications. Paper presented at the Recycled materials in geotechnical applications.
 Kandhal, P.S. and Cooley, L.A. (2001). National Cooperative Highway Research Program Report 464: The Restricted Zone in the Superpave Aggregate Gradation Specification. National Cooperative Highway Research Program (NCHRP), Transportation Research Board, National Research Council. Washington, D.C.
 Krutz, N.C., and Sebaaly, P.E. (1993). The Effects of Aggregate Gradation on Permanent Deformation of Asphalt Concrete, AAPT.
 Lay, M.G. (1985). Source Book for Australian Roads. 3rd Ed, Australian Road Research Board, Melbourne, Australia.
 Masad, E., Al-Rousan, T., Button, J., Little, D., and Tutumluer, E. (2007), National Cooperative Highway Research Program Report 555: Test Methods for Characterizing Aggregate Shape, Texture, and Angularity. National Cooperative Highway Research Program (NCHRP), Transportation Research Board, National Research Council. Washington, D.C.
 Mohajerani, A. (1997). A Study of Relationships between Polished Aggregate Friction Value, Aggregate Crushing Value, and Point Load Strength Index. Australian Geomechanics, December 1997, pp 62-65.
 Nataatmadja, A., & Tan, Y. L. (2001). "Resilient Response of recycled concrete road aggregates". Transportation engineering.
 Pereira, P., Oliveira, J. and Picado-Santos, L., (2004), “Mechanical characterization of hot mix recycled materials”, International Journal of Pavement Engineering, 5 (4), 211 –220.
 Prowell, B. D., Zhang, J. and Brown, E. R. (2005). National Cooperative Highway Research Program Report 539: Aggregate Properties and the Performance of Superpave Designed Hot Mix Asphalt. National Cooperative Highway Research Program (NCHRP), Transportation Research Board, National Research Council. Washington, D.C.
 Rebbechi, J. and Green, M., (2005), “Going green: innovations in recycling asphalt”, In: AAPA, editor. AAPA pavements industry conference. Queensland, Australia.
 Roberts, F.L., Kandhal, P.S., Brown, E.R., Lee, D.Y., and Kennedy, T.W. (1996), Hot Mix Asphalt Materials, Mixture Design, and Construction. National Asphalt Paving Association Education Foundation. Lanham, MD.