TLA與聚酯纖維復(fù)合改性熱再生瀝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

隨著我國公路建設(shè)的快速發(fā)展，使得天然石料、瀝青等路面材料的需求量逐年增多，同時(shí)大量瀝青路面的翻修或改建，造成廢舊瀝青路面材料（RAP）的堆積問題日益嚴(yán)重[1-3]。（剩余7882字）