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July 6, 2026International Journal of Pavement Engineering

Response surface modelling and non-destructive evaluation of 100% reclaimed asphalt pavement-based roller-compacted geopolymer concrete

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Authors

ABAli BashashIslamic Azad University, TehranRAReza Saleh AhariIslamic Azad University, TehranGSGholam Hossein ShahverdizadehIslamic Azad University of Tabriz

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Implication

Randomized trial optimizes compressive strength in geopolymer concrete, suggesting sustainable construction methods.

Key Points

  • The study aims to develop a sustainable geopolymer concrete using 100% reclaimed asphalt pavement as a full replacement for natural aggregates.
  • Utilized response surface methodology to optimize mixture proportions.
  • Conducted non-destructive testing to evaluate compressive strength.
  • Analyzed the effects of NaOH molarity, HL/SH ratio, and GBFS content on concrete properties.
  • The optimum mixture with 40% GBFS achieved a compressive strength of 16.8 MPa at 28 days.
  • Predictive models were developed with an R² range of 0.87−0.95 to estimate compressive strength from NDT measurements.
  • Direct ultrasonic pulse velocity showed the highest predictive accuracy with R² = 0.899.

Cite This Study

Bashash et al. (2026) studied this question.

synapsesocial.com/papers/6a4b4617997070ff83b5b89ehttps://doi.org/10.1080/10298436.2026.2695148
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