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From page 1...
... 1 Introduction Background and Problem Statement The methodology commonly used to design pavements in the United States was developed from pavement performance data collected during the American Association of State Highway Officials (AASHTO) road test conducted in Ottawa, Illinois, from 1958 to 1960.
From page 2...
... 2repairs, can correct non-severe, non-structural deterioration that is limited to the surface of a pavement (e.g., weathering and raveling, bleeding, loss of friction, roughness, and some HMA rutting)
From page 3...
... 3 Research Scope and Approach To accomplish the research objective, the project documented the effects of preservation on performance by (1) conducting a literature review and telephone interviews with state highway agency (SHA)

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