Review and analysis of Hamburg Wheel Tracking Device test data : [technical summary].
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2014-02-01
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Abstract:Approximately 89% of the paved-road network in Kansas is asphalt surfaced (bituminous and
composite). According to the Kansas Department of Transportation (KDOT), typical design
performance period of hot-mix asphalt (HMA) pavement for new construction or reconstruction
is approximately 12 years. In most cases, these pavements are overlaid as they reach the end of
their design life. Both bituminous and composite pavements are usually overlaid with Superpave
HMA for pavement preservation. The new highway program of KDOT also emphasizes
pavement preservation. KDOT is currently seeking to extend the lives of Superpave mixes
for these overlays through educated better selection of asphalt and aggregates. Thus, KDOT is
contemplating use of the Hamburg Wheel Tracking Device (HWTD) as a performance tester.
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