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1、石灰改善土灰剂量衰减曲线探索与思考（Limeimprovedsoillimeattenuationandexplorationthinkingcurve）ExplorationandthinkingoflimetoimprovesoilashdoseattenuationcurveAndyruina(Jiangxitrafficengineeringsupervisioncompany,Nanchang330008)Abstract:throughthegreydosemeasurementinAnhuiProvinceMaWuHighwaySubgradeoflimeimprovedso
2、ilintheconstructionoftheexistingvalueofthedisputecausedbythecalciumandmagnesiumcontentdeterminationandanalysisofindoortestchangeswithtime,thedoseoflimewithtimepresentsnewconceptoflinearattenuationrelationship,inordertomaketheconstructiontimeofsoilimprovedbylimeandcontrol.Toguidetheashdosageoflimes
3、oilconstructionqualifiedjudgement.Keywords:roadengineering;greydosemeasurementandanalysis;newconceptoflinearattenuationofgreydosewithtime;greydosedetermination0PrefaceMaWuhuexpresswayisthemainchannelofthecitiesalongtheYangtzeRiverinAnhuiProvince,leadingtothedevelopedcitiesofJiangsu,Shanghaiandsoon
4、.ItisabigchanneltocommunicatewiththesoutheastcoastofChinaandthemidwest.Thewidthofpavementdesign28mtwo-way4lanedesignspeedof120km/h,locatedinplainandhillyarea,thesoftsoilfoundation,thesurroundingsoilismoreexpansivesoilwithhighliquidlimit,thewatercontentin18%-25%,cannotbeuseddirectlyasroadbedfilleri
5、nroadbed,zone95shouldbeusedonlyafterimprovement,accordingtothedesignrequirementsofashdosagewere5%,5%,7%,and10%,accordingtothe4layerconstruction,eachlayerthicknessis20cm.1limetoimprovesoilconstructionrequirements1.1rawmaterialsSoil:soilconstructionusuallyhascertainrequirementsforthesoilplasticityin
6、dex(15-20),shouldbeinbetween,becausethesoilplasticityindexisbigger,thestrengthofmixtureisalsohigher,themixtureiseasilycompacted,butthecrushedsoilandsandysoilgroup,nopulverizationbutdifficultcompaction.Thisprojectismostlyhighliquidlimitcohesivesoilwithhighwatercontent,soitissuitableforconstructionw
7、ithlimesoil.Lime:locallyrichinlime,mostcanreachmorethanIIIlevel,tomeettherequirementsoflimesoilconstruction,quicklimeafterathoroughdigestion,aftertheuseof5mmscreening.1.2constructionprocessThisprojectadoptsroadmi
