Mitigation strategies for reflective cracking in pavements : [research project capsule].
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2013-12-01
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Abstract:Refl ection cracks are caused by discontinuities (cracks or joints) in underlying layers,
which propagate through hot-mix asphalt (HMA) overlay due to continuous movement
at the crack prompted by thermal expansion and traffi c loading. If the new overlay is
bonded to the distressed layer, cracks in the existing pavement almost always propagate
to the surface within one to fi ve years; however, as early as a few months have been
reported. Seasonal temperature variations may also aff ect the refl ection cracking
process, especially when dealing with rehabilitated rigid pavements.
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