The effects of the existing asphalt layer on the stress of UTW have been analyzed in elastic three layer system.

利用弹性三层体系，分析了沥青层对应力的影响规律。

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Fatigue is one of criterions in asphalt concrete pavement design, failure of asphalt concrete fatigue has correlation with the magnitude of tensile strain of asphalt layer bottom.

疲劳是沥青路面设计标准之一，沥青混凝土的疲劳失效与沥青层底拉应变值的大小相关。

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Based on the model of simplified road, the effects of different double-wheels sizes of lorry on the bottom strain of asphalt layer were analyzed by the method of numerical calculation.

以简化道路模型为对象，以数值计算方法为手段，研究了载重货车不同单边双轮轮距对沥青面层层底应变的影响。

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Getting out of its way took the tires of the Jaguar XJ out of ruts on bare asphalt and onto a thick layer of icy brown sludge deposited by an entire day of freezing rain.

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And the patch may need to dry overnight before a layer of micro-asphalt can be laid on top, says a spokeswoman for Hull City Council.

BBC: Jetpatchers at work