With the more and more loading and working of the asphalt pavement, the asphalt pavement will getting aging and weathering.
The weathering of asphalt presents itself in two main ways: oxidation and raveling. As the pavement cures, the sun's ultra-violet rays harden and dry out the asphalt surface in a process known as oxidation. Raveling is when the asphalt surface becomes dry and brittle and small stones break loose from the surface. Accelerated raveling can reduce the asphalt surface by as much as half its thickness in 10-15 years. The best defense against oxidation and raveling is to sealcoat the pavement within 1 to 5 years of installation.
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