Extending The Life Cycle of Self-Healed Asphalt Pavements with Recycled Additives

Document Type : Regular Paper

Authors

1 M.Sc., Department of Civil Engineering, Egyptian Russian University, Cairo, Egypt

2 Assistant Professor, Department of Civil Engineering, Egyptian Russian University, Cairo, Egypt

3 Assistant Professor, Department of Civil Engineering, Faculty of Engineering - Mataria, Helwan University, Cairo, Egypt

4 Professor, Department of Civil Engineering, Faculty of Engineering - Mataria, Helwan University, Cairo, Egypt

Abstract

Asphalt is the most used material for constructing road pavements worldwide. However, a major issue that affects asphalt pavement performance and service life is cracking, which is primarily caused by factors such as load and temperature. This paper aims to develop a sustainable asphalt road pavement through the self-healing technique using induction and microwave heating with additives such as electric arc furnace slag (EAFS) and steel wool fiber (SWF). Marshall Stability, Volumetric Properties, Indirect Tensile Strength, moisture resistance, low-temperature cracking resistance, and thermal distribution were studied. The healing index was utilized as an indicator for improving the self-healing of asphalt mixtures. The pavement life cycle was also predicted, and the construction cost was analyzed. The results showed that using EAFS or SWF in the asphalt mixture resulted in significant time and energy consumption. The replacement of natural coarse aggregate with 20% EAFS and/or the addition of 0.2% SWF by weight of the asphalt mixture showed promising results in improving mechanical properties, promoting sustainability, and increasing the pavement life cycle by a percentage up to 47%.

Graphical Abstract

Extending The Life Cycle of Self-Healed Asphalt Pavements with Recycled Additives

Highlights

  • Development of sustainable asphalt pavements using self-healing techniques with induction and microwave heating.
  • Incorporation of self-healing additives like electric arc furnace slag (EAFS) and steel wool fiber (SWF) to improve asphalt properties.
  • Investigation of properties such as Self-Healing Index and low-temperature cracking resistance.
  • Use of 20% EAFS or 0.2% SWF enhances mechanical properties, sustainability, and prolongs pavement life by up to 47%.

Keywords

Main Subjects

References

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History

  • Receive Date: 03 March 2025
  • Revise Date: 05 August 2025
  • Accept Date: 17 August 2025

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