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1、小解公路路面施工问题1.treatmentmeasuresofsegregationinasphaltpavementconstructionIntheconstructionofhighgradehighwaypavement,thesegregationphenomenonofasphaItconcreteduringpavingisveryserious・Segregationofasphaltsurfacelayerisnotunifomimixtureofcoarseandfineaggregateandasphaltcontent,coarseaggre
2、gatepositiongapfocusrateistoolarge,theasphaltcontentislow,intheusestagepronetowaterdamage,theformationofpitsandloosephenomenon;andthefineaggregatecontentofasphaltismoreconcentratedarea,porosityistoosmall,itwillcausetheproblemofpavementupheaval,ruttingandbleedingetc・・1.1iftheasphaltmixe
3、rorlocalvibrationsieverupture,willmakethemixturemixedwithsomemorespecificationsoflargediameteraggregate,mustalwayscheckreplacement・1.2,inmixingsiteselection,trytomakemixingsiteandpavingsitedistanceisnottoofar・Atthesametime,shouldbeappropriatetoreducespeed,smoothtransportation,thetransp
4、ortationprocess,tominimizeturbulence;tostockpileinsulationmeasuresshouldbetaken,suchastocovertarpaulinetc・・1.3intheassemblyprocessofPaverScreed,firstpayattentiontothebottomsurfaceofthejointissmooth,whetherfrontflush,bottomplate,tampinghammerheadandbladeweardeformation;secondly,topayatt
5、entiontothematerialdistributionhelixnearthemiddlepartandtheconnectingpartisreverseleaves,becausethemajorityofsegregationinthepavingprocessappearinthethespiralconnectingpartandthemiddlepositionofpaver・1.4spiraljointshavereducedsegregationphenomenon,anotherapproachistouseacompletespiral,
6、namelythroughshaftandspreadingofthesamewidthcanimprovethesegregation,butstillcannotcompletelysolveandeliminatesegregationphenomenon.1.5anothercauseofsegregationisspreadingfrequentupbyhoppersidecaused,ineachcarunloadingattheendofthelargegrainsizegravelinthehopperisrelativelyconcentrated
7、,thesideplatesofthematerialintothedistributorwillinevitablyappearsegregation.Thebestmeasuresshouldbe:acarisexpectedtobedischargedfromthemixturepaver,theremainderreceivedstopplatescraperscrapingplate,tobethenextcarmixturedischargedintothehopperafterscrapingplatematerialwillrotatetoget
