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Laboratory and Field Evaluation of Porous Asphalt Concrete

机译:多孔沥青混凝土的室内外评价

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Porous asphalt concrete (PAC) is mainly applied to the surface drainage layer on high-speed trafficked highway pavements. The use of polymer-modified binder was shown to minimize the abrasion loss and enhance the durability of the PAC mixture. Test results indicated that using polymer-modified binder compared with unmodified binder reduced rutting and raveling, with the mixture containing high-viscosity binder showing the best performance in the field. There were indications of drainage improvement by replacement of traditional binders with polymer-modified binders according to measurements in the field. PAC pavement surfaces provided good frictional characteristics once the asphalt binder film was worn from the aggregate.
机译:多孔沥青混凝土(PAC)主要用于高速行车的高速公路路面的地面排水层。结果表明,使用聚合物改性的粘合剂可以最大程度地减少磨损,并提高PAC混合物的耐久性。测试结果表明,与未改性的粘合剂相比,使用聚合物改性的粘合剂可减少车辙和松散,其中含有高粘度粘合剂的混合物在该领域表现出最佳的性能。根据现场测量,有迹象表明通过用聚合物改性的粘合剂代替传统的粘合剂可以改善排水性能。沥青结合料膜从骨料上磨损后,PAC路面便具有良好的摩擦特性。

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