泡沫沥青混合料的设计

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1、MIXDESIGNWITHFOAMEDASPHALTAugust21-22,2014JSTIWorkshop1泡沫沥青混合料的设计August21-22,2014JSTIWorkshop2SuperpaveAugust21-22,2014JSTIWorkshop3SuperpaveAugust21-22,2014JSTIWorkshop4IntegratedSystem•AsphaltBinderSpecification–bindertestmethods•MixtureDesignSuperpave–componentrequirements

2、–volumetricproportioning•MixtureAnalysis–mixtureperformancetesting–pavementperformanceprediction•SoftwareAugust21-22,2014JSTIWorkshop5集成系统•沥青胶结料规范–胶结料试验方法•混合料设计Superpave–组分要求–体积比例•混合料分析–混合料性能测试–路面性能预测•软件August21-22,2014JSTIWorkshop6LowTempFatigueCrackingConstructionRuttingCra

3、cking[DTT][RV][DSR][BBR]PavementAgeRTFO-agingNoagingPAV-agingAugust21-22,2014JSTIWorkshop7疲劳开裂低温开裂施工车辙[DTT][RV][DSR][BBR]路面寿命RTFO短期老化未老化PAV长期老化August21-22,2014JSTIWorkshop84StepsofSuperpaveMixDesign1.MaterialsSelection2.DesignAggregateStructureTSRAugust21-22,2014JSTIWorkshop9

4、3.DesignBinderContent4.MoistureSensitivitySuperpave混合料设计4个步骤1.材料选择2.设计集料结构TSRAugust21-22,2014JSTIWorkshop103.设计胶结料含量4.水稳定性DEVELOPFOAMMIXDESIGNPROTOCOLSUPERPAVEMIXDESIGNYesLaser/CameraAASHTOR35MATERIALSMeasurementonMeetsfoamingSELECTIONLaboratoryFoamingatcriteria?Modifyasphalt

5、binder160°C&1%waterNooradd/modifyfoamingadditiveWorkabilityEvaluationLowestτmaxonFoamedMixtureat1,2,and3%waterOPTIMUMWATEROptimumWopt%CONTENT(Wopt%)BinderDETERMINATIONContentCoatabilityEvaluationonCI>CIHMAFoamedMixtureat1,2,and3%waterIndirectTensile(IDT)StrengthperAASHTOT283P

6、assAASHTO/DOTSpecificationResilientModulus(MR)SpecimenFabricationPERFORMANCEperASTMD7369orEquivalentorbetterforHMAandFoamedEVALUATIONDynamicModulus(E*)perperformancethanHMAWMAatWopt%AASHTO342/TP79FailAASHTO/DOTHamburgWheelTrackingSpecificationTest(HWTT)perAASHTOT324orFlowNumb

7、erperTP79August21-22,2014JSTIWorkshopNCHRP9-53开发泡沫混合料的设计规范SUPERPAVE配合比设计是在实验室用激光/摄像AASHTOR35装置测量在160℃、含材料选择满足发泡标准？水率1%时发泡修改沥青或添加/修否改发泡添加剂含水量1%、2%。3%最低tτmax的泡沫沥青混合料的施工和易性评价最佳发泡含水量最佳沥青含Wopt%（Wopt%）测定量含水量1%、2%、3%CI>CIHMA的泡沫沥青混合料的集料裹附性评价AASHTOT283间接拉伸强度通过AAHTO/DOT规范ASTMD7369回弹模量最

8、佳含水量时制备热等同或比热拌沥青混合(MR)或AASHTO性能评价拌沥青混合料和泡沫料性能更好342/TP79动态模量（E*）温拌沥青混