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1、Thankyou, prof.…. Myname is….. I’m from….. Iam verypleasedtobeheretojointhisforum. Thetopic ofmypresentationispropertiesofrapidconstructionmaterialsforsoilpavementoffieldairfield.Asisshowninthepicture,themainpartsofmyresearchareaboutsoilpavement. Mypr
2、esentationwillincludethesefourparts:First,somebackgroundinformationaboutthisresearch;second,themainworkwehavedone;third,someconclusionswehavegotandthelast:innovationandpresentationofourpublishedpapers. WhyIchoosethisitem?Ithinkitcanbeillustratedfromth
3、efollowingfourparts.First,theexistingquantityofairfieldsisstillnotsufficientandtheairfieldshavemanyshortcomingsespeciallyinwartime. Second,thecomplementaryfacilities,suchashighwayrunwaysarefarlessthanairfields,however,havemoreweakness.Third,acertainam
4、ountoffieldairfieldisquitenecessaryconsideringsomeemergenciessuchasrescueanddisasterrelief.Forth,thefieldairfieldcanfillthevoidofairfieldandtheycanbecombinedtobeairfieldnetwork. Themeaningandaimofthisresearchcontainsthreeparts.Fast,convenientandvalidi
5、ty,fastmeansthefieldairfieldmustbeconstructedasfastaspossible,convenientmeanstheconstructionshouldneedtheminimumequipment,laborandmaterialsconsideringtheactualconstructioncondition,validitymeanstheconstructedairfieldisabletosupporttheoperationofgivena
6、ircraftinspecificallytime.Justlikemanyotherterritories,thesituationoftheresearchisthattheU.S.Armytakesadvancedline.TheU.S.Armydeclaresthattheycanreachtoanywhereontheearthin96hours,themostimportantmethodforforceprojectionisthoughaircraft,thusrapidconst
7、ructionofpavementisthekeyproblemforrapidforcetransportation.Themainworkwehavedonecanbesummarizedasfourparts,materialschoosing,schememaking,mechanicalpropertiesresearchandwater-stablepropertiesresearch.Wechoosetwokindsofsoils,whicharegotfromXi’an,Shanx
8、iprovinceandJiuquan,Gansuprovinceseparately.ThesandfromBaRiverwasconsideratetoinvestigatetheinfluenceofsandtothepropertiesofstabilizedsoil.Thechosenthreekindsofpowdersarecement,limeandnew-typestabilizerdevelopedbyChang’anUniversity.Theprincipl
