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1、Thankyou, prof.…. Myname is….. I’m from….. Iam verypleasedtobeheretojointhisforum. Thetopic ofmypresentationispropertiesofrapidconstructionmaterialsforsoilpavementoffieldairfield.Asisshowninthepicture,themainpartsofmyresearchareaboutsoilpavement. Mypresentationwillinclud
2、ethesefourparts:First,somebackgroundinformationaboutthisresearch;second,themainworkwehavedone;third,someconclusionswehavegotandthelast:innovationandpresentationofourpublishedpapers. WhyIchoosethisitem?Ithinkitcanbeillustratedfromthefollowingfourparts.First,theexistingqua
3、ntityofairfieldsisstillnotsufficientandtheairfieldshavemanyshortcomingsespeciallyinwartime. Second,thecomplementaryfacilities,suchashighwayrunwaysarefarlessthanairfields,however,havemoreweakness.Third,acertainamountoffieldairfieldisquitenecessaryconsideringsomeemergencie
4、ssuchasrescueanddisasterrelief.Forth,thefieldairfieldcanfillthevoidofairfieldandtheycanbecombinedtobeairfieldnetwork. Themeaningandaimofthisresearchcontainsthreeparts.Fast,convenientandvalidity,fastmeansthefieldairfieldmustbeconstructedasfastaspossible,convenientmeansthe
5、constructionshouldneedtheminimumequipment,laborandmaterialsconsideringtheactualconstructioncondition,validitymeanstheconstructedairfieldisabletosupporttheoperationofgivenaircraftinspecificallytime.Justlikemanyotherterritories,thesituationoftheresearchisthattheU.S.Armytak
6、esadvancedline.TheU.S.Armydeclaresthattheycanreachtoanywhereontheearthin96hours,themostimportantmethodforforceprojectionisthoughaircraft,thusrapidconstructionofpavementisthekeyproblemforrapidforcetransportation.Themainworkwehavedonecanbesummarizedasfourparts,materialscho
7、osing,schememaking,mechanicalpropertiesresearchandwater-stablepropertiesresearch.Wechoosetwokindsofsoils,whicharegotfromXi’an,ShanxiprovinceandJiuquan,Gansuprovinceseparately.ThesandfromBaRiverwasconsideratetoinvestigatetheinfluenceofsandtothepropertiesofstabilizedsoil.T
8、hechosenthreekindsofpowdersarecement,limeandnew-typestabilizerdevelopedbyChang’anUniversity.Theprincipl
