Field vane test

The vane shear test is an in-situ geotechnical testing methods used to estimate the undrained shear strength of fully saturated clays without disturbance. a readmore readmore readmore readmore FieldinvestigationBoringsStaticpenetrationtest(CPT)&piezocone(CPTu)Seismicconepenetrationtest(SCPTu)FieldvanetestTheflatdilatometertest(DMT)DynamicprobingTheBATsystemElectricalResistivityTomographyERTGeotechnicalacceptancesStaticplateloadtest(VSS)DynamicplateloadtestIsotopemetertests Thevanesheartestisanin-situgeotechnicaltestingmethodsusedtoestimatetheundrainedshearstrengthoffullysaturatedclayswithoutdisturbance.Thetestisrelativelysimple,quick, andprovidesacost-effectivewayofestimatingthesoilshearstrength;therefore,itiswidelyusedingeotechnicalinvestigations.Underspecialcondition,thevanesheartestcanbealsocarriedoutinthelaboratoryonundisturbedsoilspecimens;however,theuseofthevanesheartestinin-situtestingismuchmorecommon.   Descriptionandprocedurefieldvanetest:   Theteststartsbypushingthevaneandtherodverticallyintothesoftsoil.Thevaneisthenrotatedataslowrateof6°to12°perminute.Thetorqueismeasuredatregulartimeintervalsandthetestcontinuesuntilamaximumtorqueisreachedandthevanerotatesrapidlyforseveralrevolutions.Atthistime,thesoilfailsinshearonacylindricalsurfacearoundthevane.Therotationisusuallycontinuedaftershearingandthetorqueismeasuredtoestimatetheremoldedshearstrength. TheresultofFieldvanetestareprimarilyconsistedofthefollowings: MaximumUndrainedShearStrength(ateachtestdepth); RemoldedShearStrength(ateachtestdepth); Sensitivity(i.e.Maximumundrainedstrength/Remoldedstrength);           source:http://www.geosoft.com.pl/                            source:http://www.geosoft.com.pl/       Exampleresultsoffieldvanetest:   up CLIENTSANDPARTNERS