Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Some states, such as Wisconsin DOT have experienced pavement failures that were attributed to poor bonding at the interlayer. Three roads of WisDOT were analyzed in this study, which experienced varied degrees of slippage distress. The effect of slip can be minimized by making the surface layer sufficiently thick or stiff. It was observed that the stiffness ratio between the top two layers were higher for no distress sections than that of high distress sections. The additional thickness needed to increase structural capacity of a pavement with lower stiffness ratio to a level that will minimize slippage cracking was also investigated. The structural capacity of pavement with lower stiffness ratio (E1/E2 = 2) can be changed to the same structural capacity as that of a pavement with high E1/E2 (say, E1/E2 = 10) by providing additional thickness of 2 in and 4 in on existing top layer of 2 in and 3 in thickness, respectively. This study provides the state agency with tools during pavement design to minimize slippage cracking due to interlayer bonding failure.
Some states, such as Wisconsin DOT have experienced pavement failures that were attributed to poor bonding at the interlayer. Three roads of WisDOT were analyzed in this study, which experienced varied degrees of slippage distress. The effect of slip can be minimized by making the surface layer sufficiently thick or stiff. It was observed that the stiffness ratio between the top two layers were higher for no distress sections than that of high distress sections. The additional thickness needed to increase structural capacity of a pavement with lower stiffness ratio to a level that will minimize slippage cracking was also investigated. The structural capacity of pavement with lower stiffness ratio (E1/E2 = 2) can be changed to the same structural capacity as that of a pavement with high E1/E2 (say, E1/E2 = 10) by providing additional thickness of 2 in and 4 in on existing top layer of 2 in and 3 in thickness, respectively. This study provides the state agency with tools during pavement design to minimize slippage cracking due to interlayer bonding failure.
Evaluation of Interlayer Bonding in HMA Pavements. Wisconsin Highway Research Program. (Final Report 2002-2004)
Y. Mehta (Autor:in)
2007
154 pages
Report
Keine Angabe
Englisch
Construction Equipment, Materials, & Supplies , Highway Engineering , Asphalt , Pavements , Interlayer bonding , Pavement failures , Performance evaluation , Surface layers , Structural capacity , Thickness , Slippage distress , Interlayer bonding failures , Wisconsin , Slippage cracking , Falling weight deflectometers , Stiffness ratios , Backcalculation
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