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Pavements 2025

Innovative Sustainable Methods, Materials, and Recycling

POSTER RECEPTION (View list of posters here)

Evaluation of the Benefits of Integrating Rubber and Plastic Waste with Asphalt Pavements

Tuesday, June 10, 2025
4:45 PM – 6:00 PM MT

    Primary Author(s)

  • Ayman Saeed, n/a

    Undergraduate Student
    The American University in Cairo
    New Cairo, Al Qahirah, Egypt

    • Co-Author(s)

  • MS

    Maram Saudy, n/a

    Assistant Professor
    The American University in Cairo
    New Cairo, Al Qahirah, Egypt

    • Presenter(s)

  • MG

    Minas Guirguis, n/a

    Assistant Professor
    The American University in Cairo
    New Cairo, Al Qahirah, Egypt

  • FE

    Farida Elkaramany, n/a

    Undergraduate Student
    The American University in Cairo
    New Cairo, Al Qahirah, Egypt

  • ND

    Nadeen Dawoud, n/a

    Undergraduate Student
    The American University in Cairo
    New Cairo, Al Qahirah, Egypt

    • Co-Author(s)

  • AE

    Abdallah Elshenawy, n/a

    Undergraduate Student
    The American University in Cairo
    New Cairo, Al Qahirah, Egypt

    • Presenter(s)

  • Mohamed AbouZeid, n/a

    Professor
    The American University in Cairo
    New Cairo, Al Qahirah, Egypt

    • Submitter(s)

  • Ayman Saeed, n/a

    Undergraduate Student
    The American University in Cairo
    New Cairo, Al Qahirah, Egypt

Abstract: The global accelerated consumption of plastic and rubber products raises an urgent need to properly manage the waste of such products. This study investigates the potential enhancement of an asphalt pavement produced with waste-modified asphalt binders in relation to the anticipated distress resistance, construction cost, and reduction in carbon emissions. This enhancement utilizes 7% Crumb Rubber (CR), 5% Low-Density Polyethylene (LDPE), and 3% CR plus 3% LDPE to modify the asphalt binder, resulting in three waste-modified binders: CR-, LDPE-, and CR+LDPE-modified asphalt binders. The Superpave Mix Design method was employed to determine the optimum waste-modified asphalt mixes for both the surface and the treated base layers. The selected asphalt concrete (AC) mixes were characterized using the Indirect Tensile Strength (IDT) test and the Semi-Circular Bending (SCB) test. The main objective is to compare different mixes by performance, costs, and carbon emissions. Results revealed a noticeable enhancement in the different waste (CR and/or LDPE) modified asphalt mixes in terms of fatigue cracking and rutting resistances. Modifying asphalt binder with CR significantly improves the fatigue cracking resistance of the treated base mixes; similarly, modifying asphalt binder with CR+LDPE noticeably enhances the fatigue cracking resistance of the wearing surface mixes. Using either LDPE or CR+LDPE to modify asphalt binders of surface layer mixes substantially reduces the carbon footprint by 77.7% and 59.6%, respectively. Utilizing either LDPE or CR+LDPE to modify asphalt binders of surface mixes considerably reduces production and maintenance costs by about 23%, signifying positive outcomes for both industry and the environment.
Keywords: crumb rubber; Low-Density Polyethylene; cost analysis; carbon footprint; waste-modified; and sustainable pavement.

Learning Objectives:

Attendees can expect to learn the following from this session:
  • more aware of the most advanced research in the transportation materials field
  • meet professionals of the industry and get direct contact with them for better prospective research they're seeking out
  • get more insights about their work and enhance it in the future