The Unsaturated Shear Strength And Swelling Characteristics Of Expansive Soils Of Arbaminch
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In Ethiopia, so many researches were done on characterizing expansive soils of several townsrnBut only a single study,done on Addis Ababa expansive soil, exists on the unsaturated shear strength behavior of expansive soils.The present study addresses examining the expansive soils in ArbaMinch–at own with a great portion of it sterrain covered by the same soil but not considered inprevious studies. A laboratory-testing program was planned and carried out on undisturbed soil samples taken from 10 different locations in the town for swelling pressure testing; and among these,one pit was allottedforunsaturatedshearstrengthstudy.rnThelaboratorytestresultsrevealedthattheswellingpressurerangesfrom74.53to571.29kPa, SpecificGravityfrom2.63to2.80, PlasticityIndexfrom49to77%, ShrinkageIndexfrom81to117%andFreeSwellfrom94.0to165.0%The measured swelling pressures and the geotechnical parameters determined fromidentificationtestsareusedtoassessthevalidityofalreadydevelopedexpressionsbyvariousresearcherstothesiteunderstudyandnewmodels,thatrelateswellingpressurewithindexandphysicalproperties,aredevelopedusingSPSS16.0forwindowssoftware.rnTheresultsfromunsaturatedshearstrengthtestsperformedwitha50kNmodifieddoublewalltriaxialmachineonanundisturbedsamplesettingmatricsuctiontobe100kPa,150kPaand200kPaforaneffectiveconsolidationpressureof200kPahaveclearlyindicatedthesaturatedcasetoyieldsmallershearstrengththantheunsaturatedone.Themaximumdeviatorstressshowedtoincreasefrom107.61kPato174.35kPawithanincreaseinmatricsuctionbuttheshapeofthestress-straindiagramremainedidentical.
Subsurface Intelligence & Critical Mineral Exploration
Modern Geology projects now focus on Machine Learning in Mineral Targeting, Carbon Capture & Storage (CCS) Geologic Modeling, and Critical Mineral Systems (Lithium, REEs). If your research involves Hydrogeological Connectivity, Seismic Inversion, or Geotechnical Site Characterization, ensure your analysis follows the JORC or NI 43-101 reporting standards and utilizes robust 3D Subsurface Visualization and Geochemical Fingerprinting frameworks.
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