Kushala Rani
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Recycled Materials for Road Construction

Engineered and evaluated Reclaimed Asphalt Pavement (RAP) in Dense Bituminous Macadam mixes through material testing and Marshall Stability analysis. Identified an optimal 30% RAP mix achieving 19.88 kN stability, offering a cost-effective, sustainable alternative to fresh aggregates while meeting standards.

Timeline
Jan 2023 – Apr 2023
Role
Undergraduate Researcher
Stack
Materials Testing, Marshall Analysis, Excel
Contributions
Mix design, testing, statistical analysis, recommendation

Approach

  • Executed material testing: specific gravity, aggregate impact and crushing, LA abrasion.
  • Designed DBM mixes with 0–40% RAP and 4.5–5% bitumen content.
  • Conducted Marshall Stability tests and analyzed results to determine optimal RAP content.
  • Applied Excel-based blending and statistical analysis to validate design targets and standards.

Highlights

  • Optimal 30% RAP mix achieved 19.88 kN stability while satisfying quality thresholds.
  • Reduced reliance on virgin aggregates, lowering cost and environmental impact.
  • Documented a reproducible lab workflow and reporting template for future studies.