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Effect of Fractured Aggregate Particles on Linear Stress Ratio of Aggregate and Resilience Properties of Asphalt Mixes—A Way Forward for Sustainable Pavements

Author

Listed:
  • Mujasim Ali Rizvi

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

  • Ammad Hassan Khan

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

  • Zia ur Rehman

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

  • Zubair Masoud

    (Geotechnical Consultant, Lahore 54810, Pakistan)

  • Aasim Inam

    (HRTC & Design, National Highway Authority of Pakistan, Islamabad 44090, Pakistan)

Abstract

The interlocking and packing of aggregate particles play a key role in achieving high level of linear viscoelastic properties and rutting resistance in asphalt mix for sustainable pavements. In this study, the quantitative effect of fractured aggregate particles (FAPs) on loading (i.e., 500 kPa normal stress), along with the resilience properties of asphalt mixes, was evaluated. Linear and nonlinear stress behaviors of aggregates (from direct shear test) and asphalt mixes (from resilient modulus test) were analyzed. A new quantitative parameter (linear stress ratio), i.e., linear stress (P i )/maximum stress (P max ), is proposed to be used in selection of aggregates for asphalt mixes. It was observed that 15.5% increase in FAPs caused 19.5% increase in ϕ and 70.7% increase in linear stress ratio (LSR). The same content of FAPs resulted in 29.4% and 36% increases in total resilient modulus (MRT) and 34.2% and 24.5% increases in instantaneous resilient modulus (MRI) for 0.1 and 0.3 s load durations, respectively. The proposed LSR is observed to be superior to conventionally used ϕ for aggregate resistance in design of flexible pavements.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:15:p:8630-:d:607192
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    References listed on IDEAS

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    1. Bruno Crisman & Giulio Ossich & Lorenzo De Lorenzi & Paolo Bevilacqua & Roberto Roberti, 2020. "A Laboratory Assessment of the Influence of Crumb Rubber in Hot Mix Asphalt with Recycled Steel Slag," Sustainability, MDPI, vol. 12(19), pages 1-21, September.
    2. Greg White, 2020. "A Synthesis on the Effects of Two Commercial Recycled Plastics on the Properties of Bitumen and Asphalt," Sustainability, MDPI, vol. 12(20), pages 1-20, October.
    3. Seyed Reza Omranian & Meor Othman Hamzah & Georgios Pipintakos & Wim Van den bergh & Cedric Vuye & Mohd Rosli Mohd Hasan, 2020. "Effects of Short-Term Aging on the Compactibility and Volumetric Properties of Asphalt Mixtures Using the Response Surface Method," Sustainability, MDPI, vol. 12(15), pages 1-16, July.
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    Cited by:

    1. 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.

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