Which term describes asphalt with additives like fibres or capsules that repair small cracks with heat or induction?

Which term describes asphalt with additives like fibres or capsules that repair small cracks with heat or induction?

• A. Milestones
• B. Trackway
• C. Self healing asphalt
• D. Solar roadways

Answer: (C)

Self-healing asphalt describes a pavement that can repair itself after small cracks form by using embedded additives that respond to heat or induction. The idea is to include components like microcapsulated rejuvenators or conductive fibers that stay dormant until a crack appears. When heat is applied or an induction current is run through the material, these components react: the binder becomes more fluid or a healing agent is released, allowing the asphalt to flow into the crack and seal it. This automatic restoration helps restore strength at the crack site, extending the road’s life and reducing maintenance. Other terms don’t fit because they refer to things unrelated to pavement repair: milestones are markers of progress, trackway is simply a road or pathway, and solar roadways describe roads designed to generate power rather than a self-repairing asphalt technology.

Self-healing asphalt describes a pavement that can repair itself after small cracks form by using embedded additives that respond to heat or induction. The idea is to include components like microcapsulated rejuvenators or conductive fibers that stay dormant until a crack appears. When heat is applied or an induction current is run through the material, these components react: the binder becomes more fluid or a healing agent is released, allowing the asphalt to flow into the crack and seal it. This automatic restoration helps restore strength at the crack site, extending the road’s life and reducing maintenance.

Other terms don’t fit because they refer to things unrelated to pavement repair: milestones are markers of progress, trackway is simply a road or pathway, and solar roadways describe roads designed to generate power rather than a self-repairing asphalt technology.