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<p>This study explores the sustainable development of road infrastructure by substituting conventional aggregates with waste glass and Type C fly ash in open-graded asphalt mixtures. Performance evaluations through laboratory experiments showed that replacing virgin granite aggregate with waste glass (up to 30%) and using Type C fly ash as filler had minimal impact on air-void content, indirect tensile strength, and Marshall stability. However, permeability decreased for mixtures with both unmodified (PG 67-22) and modified (PG 76-22) binders. For mixtures with PG 76-22 binder, moisture resistance improved with 10% waste glass replacement and fly ash filler while raveling resistance increased with higher waste glass content. These findings demonstrate the potential of using waste glass and fly ash in open-graded asphalt mixture, offering a sustainable alternative for pavement construction.</p>

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Investigation of the performance of open-graded asphalt mixture containing waste glass and fly ash

  • 期刊论文

  • 发表日期：

    2025年3月27日

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  • Abdulaziz Alalyani,
  • Qing Lu,
  • Ahmed Elnihum,
  • Asad Elmagarhe,
  • Mohammad Alharthai

摘要

This study explores the sustainable development of road infrastructure by substituting conventional aggregates with waste glass and Type C fly ash in open-graded asphalt mixtures. Performance evaluations through laboratory experiments showed that replacing virgin granite aggregate with waste glass (up to 30%) and using Type C fly ash as filler had minimal impact on air-void content, indirect tensile strength, and Marshall stability. However, permeability decreased for mixtures with both unmodified (PG 67-22) and modified (PG 76-22) binders. For mixtures with PG 76-22 binder, moisture resistance improved with 10% waste glass replacement and fly ash filler while raveling resistance increased with higher waste glass content. These findings demonstrate the potential of using waste glass and fly ash in open-graded asphalt mixture, offering a sustainable alternative for pavement construction.