Various modified asphalt mixture systems were selected for laboratory and field testing. These systems included the following asphalt mixtures: Class A mix, as the control mixture; Class N, which is a coarse mixture; polymerized Class A; polyester fiber; polypropylene fiber; and Vestoplast. Laboratory testing included: Marshall stability, resilient modulus, moisture susceptibility, tensile strength, and freeze-thaw. A field trial section was constructed for long-term performance monitoring.

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