TLA与聚酯纤维复合改性热再生沥青混合料路用性能研究

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HU Wenjuan

（Zhengzhou Highway Engineering Company，Zhengzhou 45oooo，China）

Abstract：Inordertomprovetheoadperformanceanddurabilityofhotrecycledaspaltmixture，TAandpolyesterfberarefistused forcompositedesign，andthenbasedonMarshall，high-temperatureruting，low-temperaturebending，soakingMarshall，frzethaw spliting，twopointbendingandsoakingAPAtests，theigh-temperaturestability，low-temperaturecrackresistance，waterstability andfatigueenduranceofTAandpolyesterfibrcompositemodifedotrecycledasphaltmixturewerecomprehensivelyinvestigatedTh resultsshowthatbothTAandpolyesterfibercanimprovethehightemperaturestabilt，low-temperaturecrackresistanceandwater stabilityofhotrecycledasphaltmixture，andtheimprovementefectofTAisrelativelyobvious；Theroadperformanceofthehot recycledasphaltmixturemodifedbyTAandpolyesterfberhaseensignificantlyiproed，nditcanbeaplidtoecostructionof asphalt pavementintheseverecoldinthenorthofChinaorthehightemperature，humidandrainyareasinthesouth；TLAcan effectivelyimproetiffsmousndfatiulifeoftredaspaltiure，andteimproventefectisorbviofer reasonablemixingofpolyesterfiber，whichmetstheregulationsandrequirementsof highmodulusasphaltmixture；Theroad performanceanddurabilityofhotrecycledasphalt mixturecanbecomprehensivelyimprovedbyusingareasonableproportionofTAand polyester fiber.

Keywords：polyester fiber；hot recycled asphalt mixture；TLA；road performance；durability

0引言

随着我国公路建设的快速发展，使得天然石料、沥青等路面材料的需求量逐年增多，同时大量沥青路面的翻修或改建，造成废旧沥青路面材料（RAP）的堆积问题日益严重[1-3]。（剩余7882字）