United States Department of Transportation
i
Pavement performance testing : research implementation plan.
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2005-01-01
[PDF-76.22 KB]
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Edition:Research implementation plan.
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Abstract:STATEMENT OF NEED: Validate effect of materials variables in the Superpave mix design system as
affects rutting and fatigue performance.
RESEARCH OBJECTIVES: 1. Determine the effect of aggregate characteristics and gradation and polymer modifier on pavement rutting and fatigue performance. 2. Obtain data for the development and verification of the mechanistic empirical design approach for flexible pavement. 3. Determine the correlation of predicted performance of the pavement system by laboratory methods with accelerated load test.
RESEARCH TASKS: Seven lab tests (APA, triaxial, uniaxial, flexural fatigue, IDT, resilient modulus, moisture susceptibility) used to evaluate rutting, fatigue and moisture damage. Two aggregates, 3 gradations and 3 binders used. Three mixed chosen for the APLF facility at Lancaster for test.
RESEARCH DELIVERABLES: All test data, summary and conclusions pointing out significant trends
and recommendations regarding Superpave mixtures and materials.
RESEARCH RECOMMENDATIONS: Continue to use a modified Superpave design criteria with no
restricted zone, with modified binders, and with crushed materials. The APLF facility validates quicker lab methods such as the APA and IDT.
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