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Nanotechnology Asphalt Could Last Twice as Long


Nanotechnology Asphalt Could Last Twice as Long
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In spite of many attempts to replace it with a more suitable material, asphalt concrete remains the best and cheapest material for paving roads. Vulnerable to heat, ice, ultraviolet light and mechanical stress, it has a relatively short lifespan and has to be repaired or replaced at regular intervals. Swiss engineers say they may have found a formula for asphalt with self-healing properties VOA’s George Putic reports.

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