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Asbuton refers to a type of natural asphalt which is mined to be used as granular mineral aggregates bitumen. This study’s purpose is to appraise the performance and evaluate the feasibility of implementing Pure Asbuton, an advanced form of asphalt concrete, as a binder in HRS-WC mixtures, replacing traditional oil asphalt. The fact that Indonesia continues to rely on importing oil asphalt for road construction makes it economically unfeasible to use petroleum as an asphalt binder, thus, makes Pure Asbuton strategically advantageous to curtail import dependency and harness domestic resources. This study focusses on determining the optimum asbuton content and determining the workability index of the HRS-WC mixtures with Pure Asbuton for different conditions. Laboratory experiments were conducted at five levels of asphalt content (6.0–8.0%) and three compaction temperatures (90°, 110°, and 130°). Marshall tests were carried out to assess the volumetric and mechanical properties of the mixtures. Findings illustrate that the optimum asphalt content was found to be 7.2%, 7.0%, and 6.9% for 90, 110, and 130 °C respectively. Workability index values ranged from 2.941 to 4.832 proving that no single mixture could satisfy that standard minimum value of 6 which is considered acceptable for workability.

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Analysis of Workability Index on Hot Rolled Sheet Mixture—Wearing Course (HRS-WC) with Pure Asbuton Binder

  • 会议论文

  • 发表日期：

    2026年

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  • Muji Rifai,
  • Michael Prilas Simanjuntak,
  • Djoko Sarwono,
  • Fajar Sri Handayani

摘要

Asbuton refers to a type of natural asphalt which is mined to be used as granular mineral aggregates bitumen. This study’s purpose is to appraise the performance and evaluate the feasibility of implementing Pure Asbuton, an advanced form of asphalt concrete, as a binder in HRS-WC mixtures, replacing traditional oil asphalt. The fact that Indonesia continues to rely on importing oil asphalt for road construction makes it economically unfeasible to use petroleum as an asphalt binder, thus, makes Pure Asbuton strategically advantageous to curtail import dependency and harness domestic resources. This study focusses on determining the optimum asbuton content and determining the workability index of the HRS-WC mixtures with Pure Asbuton for different conditions. Laboratory experiments were conducted at five levels of asphalt content (6.0–8.0%) and three compaction temperatures (90°, 110°, and 130°). Marshall tests were carried out to assess the volumetric and mechanical properties of the mixtures. Findings illustrate that the optimum asphalt content was found to be 7.2%, 7.0%, and 6.9% for 90, 110, and 130 °C respectively. Workability index values ranged from 2.941 to 4.832 proving that no single mixture could satisfy that standard minimum value of 6 which is considered acceptable for workability.