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Full Recycling of Asphalt Concrete with Waste Cooking Oil as Rejuvenator and LDPE from Urban Waste as Binder Modifier

Author

Listed:
  • Carlos Rodrigues

    (Instituto Superior de Engenharia de Coimbra, Instituto Politécnico de Coimbra, Rua Pedro Nunes, 3030-199 Coimbra, Portugal)

  • Silvino Capitão

    (Instituto Superior de Engenharia de Coimbra, Instituto Politécnico de Coimbra, Rua Pedro Nunes, 3030-199 Coimbra, Portugal
    CERIS—Civil Engineering Research and Innovation for Sustainability, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal)

  • Luís Picado-Santos

    (CERIS—Civil Engineering Research and Innovation for Sustainability, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal)

  • Arminda Almeida

    (Departamento de Engenharia Civil, Universidade de Coimbra, Rua Luís Reis Santos, 3030-788 Coimbra, Portugal
    CITTA—Centro de Investigação do Território, Transportes e Ambiente, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal)

Abstract

Some research projects have studied full recycling of reclaimed asphalt pavement (RAP). Several additives have been used to rejuvenate the RAP’s aged bitumen. The authors previously studied full recycling of RAP rejuvenated with waste cooking oil (WCO). The asphalt concrete (AC) manufactured revealed good mechanical behaviour except for rutting resistance. Therefore, they decided to also include in the asphalt mixtures low density polyethylene (LDPE) from urban waste as a low-cost polymer to improve that weak point and verify if this technique was feasible and with potential as a pavement material. A laboratory plan was conceived to evaluate the mechanical performance of two rejuvenated ACs with WCO and LDPE. Stiffness, water sensitivity, resistance to rutting and fatigue cracking were evaluated. The results showed that, despite some empirical parameters usually indicated in current specifications not being met, the performance of the studied asphalt mixtures was adequate and, thus, there are good expectations about the future use of these solutions in real pavements, particularly for low and intermediate traffic levels. Based on a global analysis of the performance observed, the main conclusion was that full recycling of AC with WCO and LDPE is feasible, and the score obtained was higher than that of a conventional AC used for comparison.

Suggested Citation

  • Carlos Rodrigues & Silvino Capitão & Luís Picado-Santos & Arminda Almeida, 2020. "Full Recycling of Asphalt Concrete with Waste Cooking Oil as Rejuvenator and LDPE from Urban Waste as Binder Modifier," Sustainability, MDPI, vol. 12(19), pages 1-18, October.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:19:p:8222-:d:424231
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    References listed on IDEAS

    as
    1. F. C. G. Martinho & L. G. Picado-Santos & S. D. Capitão, 2018. "Feasibility Assessment of the Use of Recycled Aggregates for Asphalt Mixtures," Sustainability, MDPI, vol. 10(6), pages 1-23, May.
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    Cited by:

    1. Ashraf Aljarmouzi & Ruikun Dong, 2022. "Sustainable Asphalt Rejuvenation by Using Waste Tire Rubber Mixed with Waste Oils," Sustainability, MDPI, vol. 14(14), pages 1-27, July.
    2. Zafreen Elahi & Fauzan Mohd Jakarni & Ratnasamy Muniandy & Salihudin Hassim & Mohd Shahrizal Ab Razak & Anwaar Hazoor Ansari & Mohamed Meftah Ben Zair, 2021. "Waste Cooking Oil as a Sustainable Bio Modifier for Asphalt Modification: A Review," Sustainability, MDPI, vol. 13(20), pages 1-27, October.

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