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现浇泡沫轻质土在铁路路基加宽施工中的应用.docx

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现浇泡沫轻质土在铁路路基加宽施工中的应用 Abstract Expandedpolystyrene(EPS)lightweightsoilisanewtypeofembankmentmaterialthathasincreasinglybeenusedinrailwayconstruction.ThetechnologyofpouringEPSlightweightsoilinsituonarailwaysubgradehasbeenadoptedinmanycountries,includingChinaandhasbeenwidelyusedforwideningrailwaysubgrades.ThispaperaimstointroducetheapplicationofinsitupouredEPSlightweightsoilinrailwaysubgradewidening,itsbenefits,andtheconstructiontechnology. Introduction Railwaydevelopmenthasimprovedtransportationandboostedeconomicgrowthinmanycountries.Railwaysubgradesrequireahighlevelofengineeringskillsandreliablematerialstoensurelong-termoperationandsafety.Traditionalmethodsofsubgradewideningincludeaddingsoil,sand,rocks,orothermaterials.However,thesematerialsareusuallyheavy,requirehightransportcosts,andneedbigmachineriesforconstruction.Duetotheselimitations,alternativematerialsthatarelighter,moreefficient,andcost-effectivehavebeendeveloped. Expandedpolystyrene(EPS)lightweightsoilisanewtypeofembankmentmaterialthathasbeenusedgloballyformanyyears.Itismadebymixingcement,water,andEPSbeads.Theresultingmixtureispouredinsituonthesubgradetoformafully-bondedlayer.Meanwhile,thissimpleandefficientprocessislesstime-consuming,morecost-effective,andeasytocontrol. ApplicationofEPSLightweightSoilinRailwaySubgradeWidening TheapplicationofEPSinrailwaysubgradeconstructionisnotnew.Manycountries,suchasChina,theUnitedStates,andJapan,havebeenusingthistechnologyintheirrailwayconstructionprojects.EPSlightweightsoilhasbeenprovedtobeareliablematerialforvariousapplicationsinrailwayconstruction,includingsubgradewidening. Wideningarailwaysubgraderequiresextensiveexcavation,transportation,andinstallationofnewmaterials.EPSlightweightsoilhastheadvantageofbeinglightweightandeasytotransport.Itreducestheamountofexcavationrequiredcomparedtotraditionalmaterials,reducingbothexcavationcostsanddismantlinganddisposalcosts.ThismakesEPSlightweightsoilmorecost-effectivethantraditionalmaterial.Furthermore,EPSlightweightsoilislessd