The Effect of RAP on the Structural Capacity of Pavement Base Layers

Status:  Complete
Report Date:  01/30/2009


Researchers evaluated the effects of freeze-thaw cycles and severe moisture conditions on the stiffness and strength of RAP pavement base layers by evaluating RAP and virgin aggregate samples for resilient modulus, shear strength and other properties from several road construction projects. Results showed that RAP had a higher resilient modulus and equivalent shear strength to virgin aggregate, was negligibly affected by freeze-thaw and is a viable alternative to virgin aggregates for use in road base layers.

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