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<p>Sustainable infrastructure development requires innovative materials that enhance pavement performance while minimizing environmental impact. Sugarcane Bagasse Ash (SCBA) has emerged as a promising material in road construction due to its abundance and pozzolanic behaviors. This study investigates the effectiveness of SCBA as a stabilizing agent for scarified pavement materials (SPM) through a combination of laboratory experiments and finite element modeling (FEM). Microscopic analyses revealed that incorporating 10% SCBA by weight improved the chemical composition, microstructural integrity, and elemental uniformity of SPM. Laboratory investigations revealed that the addition of 10% SCBA increased the unconfined compressive strength (UCS) by up to 24.6%, reduced the plasticity index by 17.3%, and improved compaction characteristics. As an extension, FEM simulations under one-lane and two-lane embankment configurations at vehicle speeds of 30, 60, and 120&#xa0;km/h demonstrated up to 18.2% reduction in displacement and 9.1% reduction in stress across critical pavement layers. These enhancements are attributed to SCBA’s pozzolanic activity and improved interparticle bonding. The findings positioned SCBA as a sustainable and high-performance alternative to conventional stabilizers, offering greater strength, reduced deformation, and lower carbon emissions. Overall, the study highlights the potential of SCBA in advancing circular economy practices and promoting agricultural waste valorization in sustainable pavement engineering.</p>

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Physicochemical analysis and speed-induced stress modelling of sugarcane bagasse ash-stabilized scarified pavement for subgrade application

  • 期刊论文

  • 发表日期：

    2026年2月12日

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  • Lasmar Garba,
  • Anoop Bhardwaj,
  • Auwal Alhassan Musa,
  • Usman Usman Aliyu,
  • Ibrahim Auwal Sayyadi,
  • Mansur Isah Ismail

摘要

Sustainable infrastructure development requires innovative materials that enhance pavement performance while minimizing environmental impact. Sugarcane Bagasse Ash (SCBA) has emerged as a promising material in road construction due to its abundance and pozzolanic behaviors. This study investigates the effectiveness of SCBA as a stabilizing agent for scarified pavement materials (SPM) through a combination of laboratory experiments and finite element modeling (FEM). Microscopic analyses revealed that incorporating 10% SCBA by weight improved the chemical composition, microstructural integrity, and elemental uniformity of SPM. Laboratory investigations revealed that the addition of 10% SCBA increased the unconfined compressive strength (UCS) by up to 24.6%, reduced the plasticity index by 17.3%, and improved compaction characteristics. As an extension, FEM simulations under one-lane and two-lane embankment configurations at vehicle speeds of 30, 60, and 120 km/h demonstrated up to 18.2% reduction in displacement and 9.1% reduction in stress across critical pavement layers. These enhancements are attributed to SCBA’s pozzolanic activity and improved interparticle bonding. The findings positioned SCBA as a sustainable and high-performance alternative to conventional stabilizers, offering greater strength, reduced deformation, and lower carbon emissions. Overall, the study highlights the potential of SCBA in advancing circular economy practices and promoting agricultural waste valorization in sustainable pavement engineering.