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This paper examines the outcomes and correlations between the chemical and physical characteristics of aged bitumen that incorporates a rejuvenator. Physical tests conducted to investigate these relationships include penetration (PEN), softening point (SP), viscosity, and bending beam rheometer (BBR). The chemical properties are tested using Fourier transform infrared (FTIR) spectroscopy. Cecabase, an oil-based rejuvenator, is used in varying concentrations of 0.3%, 0.5%, 0.7%, and 1.0% by weight of the bitumen. The findings indicate an increase in penetration and a decrease in viscosity. As the cecabase percentage increases, the SP results show an increasing trend, which aligns with the BBR results. FTIR analysis reveals that the sulfoxide, carbonyl, and aromatic index ratios decrease while the aliphatic index increases, 7indicating oxidation during aging. The relationship between physical and chemical properties is that as the indicators of oxidation decrease, the physical properties of the recycled bitumen approach those of the control bitumen.

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Relationship Between Physical and Chemical Properties of Aged Bitumen Incorporating Rejuvenator

  • 会议论文

  • 发表日期：

    2025年

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  • Wahyuni Wahab,
  • Mohd Khairul Idham Mohd Satar,
  • Muhammad Naqiuddin Mohd Warid,
  • Nurul Aliah Amirah Mazalan,
  • Nursuhana Borhanuddin,
  • Norhidayah Abdul Hassan,
  • Mohd Rosli Hainin,
  • Haryati Yaacob

摘要

This paper examines the outcomes and correlations between the chemical and physical characteristics of aged bitumen that incorporates a rejuvenator. Physical tests conducted to investigate these relationships include penetration (PEN), softening point (SP), viscosity, and bending beam rheometer (BBR). The chemical properties are tested using Fourier transform infrared (FTIR) spectroscopy. Cecabase, an oil-based rejuvenator, is used in varying concentrations of 0.3%, 0.5%, 0.7%, and 1.0% by weight of the bitumen. The findings indicate an increase in penetration and a decrease in viscosity. As the cecabase percentage increases, the SP results show an increasing trend, which aligns with the BBR results. FTIR analysis reveals that the sulfoxide, carbonyl, and aromatic index ratios decrease while the aliphatic index increases, 7indicating oxidation during aging. The relationship between physical and chemical properties is that as the indicators of oxidation decrease, the physical properties of the recycled bitumen approach those of the control bitumen.