Pavement deterioration, particularly due to cracking, significantly impacts road quality. Self-healing techniques, including the use of additives like recycled glass powder, offer a solution by enhancing bitumen’s ability to close microcracks, thereby extending the lifespan of pavements and reducing maintenance frequency. This study explores the effect of temperature on healing efficiency of asphalt with and without recycled glass powder through controlled laboratory methods, including micro-oven heating to simulate real-world conditions. RGP was incorporated in the asphalt mix at varying quantities, i.e., 5, 10, 15, and 20% (by weight). The optimum binder content required was identified, and the mix design for glasphalt mixes was optimized for evaluating its physical and mechanical properties. According to test results, optimum binder content for glasphalt mixes was identified to be 5%. It was found that by adding recycled glass powder, it enhanced the mix performance. Long-term aging was performed to compare different glasphalt mixtures with varying dosages. Effort is made to find out the self-healing behavior of glasphalt mixes through different analysis. The TSR was found out be highest for 15% glasphalt mixes. Healing efficiency was better for 15% glasphalt mixes. The self-healing behavior in long-term aging showed better results for 20% glasphalt mixes. Fourier transform infrared (FTIR) spectroscopy was utilized to examine the composition of molecular blends. The study concluded that using recycled glass powder presents a sustainable and effective approach in improving pavement performance and addressing environmental concerns.

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Laboratory Investigations on Self-Healing Properties of Asphalt Mixes Using Glass Powder

  • S. Sagar,
  • L. Durga Prashanth

摘要

Pavement deterioration, particularly due to cracking, significantly impacts road quality. Self-healing techniques, including the use of additives like recycled glass powder, offer a solution by enhancing bitumen’s ability to close microcracks, thereby extending the lifespan of pavements and reducing maintenance frequency. This study explores the effect of temperature on healing efficiency of asphalt with and without recycled glass powder through controlled laboratory methods, including micro-oven heating to simulate real-world conditions. RGP was incorporated in the asphalt mix at varying quantities, i.e., 5, 10, 15, and 20% (by weight). The optimum binder content required was identified, and the mix design for glasphalt mixes was optimized for evaluating its physical and mechanical properties. According to test results, optimum binder content for glasphalt mixes was identified to be 5%. It was found that by adding recycled glass powder, it enhanced the mix performance. Long-term aging was performed to compare different glasphalt mixtures with varying dosages. Effort is made to find out the self-healing behavior of glasphalt mixes through different analysis. The TSR was found out be highest for 15% glasphalt mixes. Healing efficiency was better for 15% glasphalt mixes. The self-healing behavior in long-term aging showed better results for 20% glasphalt mixes. Fourier transform infrared (FTIR) spectroscopy was utilized to examine the composition of molecular blends. The study concluded that using recycled glass powder presents a sustainable and effective approach in improving pavement performance and addressing environmental concerns.