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Effect of Weak Zones on Resilience of Sustainable Surface Course Mixtures of Fresh-Reclaimed Asphalt Pavement

Author

Listed:
  • Syed Iqrar Hussain

    (Department of Transportation Engineering and Management, University of Engineering and Technology, Lahore 54890, Pakistan
    Punjab Mass Transit Authority, Lahore 54600, Pakistan)

  • Ammad Hassan Khan

    (Department of Transportation Engineering and Management, University of Engineering and Technology, Lahore 54890, Pakistan)

  • Zia ur Rehman

    (Department of Transportation Engineering and Management, University of Engineering and Technology, Lahore 54890, Pakistan)

  • Wasim Abbas

    (Department of Civil Engineering, University of Engineering and Technology, Lahore 54890, Pakistan)

  • Safeer Abbas

    (Department of Civil Engineering, University of Engineering and Technology, Lahore 54890, Pakistan)

  • Abdeliazim Mustafa Mohamed

    (Department of Civil Engineering, Prince Sattam Bin Abdul Aziz University, Alkharj 16273, Saudi Arabia)

  • Dina Mohamed Fathi

    (Department of Structure Engineering and Construction Management, Future University, Cairo 11835, Egypt)

  • Mubashir Aziz

    (Department of Civil and Environmental Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
    Interdisciplinary Research Center for Construction and Building Materials, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia)

Abstract

The use of reclaimed asphalt pavement (RAP) is necessary for sustainable and cost-effective road infrastructure construction. This research investigates the effect of the area of weak zones ( WZ ) on the resilient modulus ( M RT ) of mixtures of fresh asphalt with 20% RAP. Experimentation on fresh asphalt–RAP mixtures comprising Superpave (SP-A, SP-B) and Asphalt Institute (MS-2) gradations with 20/30, 40/50, 60/70 and 80/100 penetration grade binders was carried out. WZ were determined based on the analysis of magnified digital images of asphalt specimens obtained using optical microscopy. This study demonstrates that the 20/30 grade binder caused an increase in the M RT at 25 °C up to 1.8, 2.9 and 9.2 times for a 0.1 s load duration, and 2.4, 3.0 and 9.7 times for a 0.3 s load duration. In contrast, improvement at 40 °C was observed to be up to 1.9, 3.1 and 9.7 times for a 0.1 s load duration, and 1.9, 3.0 and 12.4 times for a 0.3 s load duration in comparison with 40/50, 60/70 and 80/100 grade binders, respectively. Experimental data were validated by factorial analysis. Power trendline equations were also developed between M RT and WZ to explain the effect of gravel particle orientation on the sustainable resilience of surface course mixtures.

Suggested Citation

  • Syed Iqrar Hussain & Ammad Hassan Khan & Zia ur Rehman & Wasim Abbas & Safeer Abbas & Abdeliazim Mustafa Mohamed & Dina Mohamed Fathi & Mubashir Aziz, 2022. "Effect of Weak Zones on Resilience of Sustainable Surface Course Mixtures of Fresh-Reclaimed Asphalt Pavement," Sustainability, MDPI, vol. 14(16), pages 1-17, August.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:16:p:9966-:d:886275
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    References listed on IDEAS

    as
    1. Mujasim Ali Rizvi & Ammad Hassan Khan & Zia ur Rehman & Zubair Masoud & Aasim Inam, 2021. "Effect of Fractured Aggregate Particles on Linear Stress Ratio of Aggregate and Resilience Properties of Asphalt Mixes—A Way Forward for Sustainable Pavements," Sustainability, MDPI, vol. 13(15), pages 1-28, August.
    2. Mujasim Ali Rizvi & Ammad Hassan Khan & Zia ur Rehman & Aasim Inam & Zubair Masoud, 2021. "Evaluation of Linear Deformation and Unloading Stiffness Characteristics of Asphalt Mixtures Incorporating Various Aggregate Gradations," Sustainability, MDPI, vol. 13(16), pages 1-21, August.
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