Laboratory determination of strength properties of frozen rubber– sand mixtures

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1、ColdRegionsScienceandTechnology60(2010)169–175ContentslistsavailableatScienceDirectColdRegionsScienceandTechnologyjournalhomepage:www.elsevier.com/locate/coldregionsLaboratorydeterminationofstrengthpropertiesoffrozenrubber–sandmixturesMartinChrist⁎,Jun-BoumParkDepartmentofCivil&En

2、vironmentalEngineering,SeoulNationalUniversity,151-742,RepublicofKoreaarticleinfoabstractArticlehistory:Theobjectiveofthisstudywastoinvestigatethestrengthcharacteristicsoffrozenrubber–sandmixtures.Received10February2009Uniaxialcompressivestrength,direct-tensilestrengthanddirect-sh

3、eartestswereconductedonrubber–sandAccepted31August2009mixturesatvariousrubbercontents(0,10,15,20,and30%)andlowtemperatures.Theresultsshowedthatthestrengthcharacteristicsofrubber–sandmixtureswereinfluencedbytemperatureandrubbercontent.ItwasKeywords:foundthatthestrengthoffrozensandan

4、drubber–sandmixtureswassignificantlygreaterthanthatofFrozensoilunfrozensandandrubber–sandmixtures.TheincreaseinstrengthcontinuedwithadecreaseinsubfreezingGranulatedrubberMechanicalstrengthtemperature.Theadditionofrubbertosanddecreasedthestrength,namely,thehighertherubbercontentinCo

5、hesionthemix,thelowerthestrength.BasedoncompactioncharacteristicsandtheformulationofminimumvoidIntergranularfrictionratiotheoptimumrubber-mixingratiowasfoundtobearound15%.Thestrengthtestdatasuggeststhatalowrubber-mixingratioandsubfreezingtemperaturegivehighstrength,whiletheadditio

6、nofrubbertosandprovidesanopportunitytocontrolfailuredeformationcharacteristicsandearthpressure.©2009ElsevierB.V.Allrightsreserved.1.IntroductionAkagawaetal.,1982;ZhuandCarbee,1984;Zhuetal.,1988;andothers)andtheroleofthevariousparametersonthemechanicalstrengthisIntemperateclimates,

7、theutilizationofscraptireswithinthecivilwellknown.Byaddingrubbertoafrozensoil,afifthphaseisaddedtoengineeringfield,e.g.asbackfillmaterialhasbecomeacommonthesystemandthepresenceofrubberwithinthesystemneedstobepracticeandopenedthepossibilitytoreinforcesoils,preventconsidered.Therefore,

8、theapplicationofrubbermixedwithas