The Unsaturated Shear Strength And Swelling Charac Teristics Of Expansive Soils Of Arbaminch
Geotechnical Engineering Project Topics
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InEthiopia,somanyresearchesweredoneoncharacterizingexpansivesoilsofseveraltownsbutonlyasinglestudy,doneonAddisAbabaexpansivesoil,existsontheunsaturatedshearstrengthbehaviorofexpansivesoils.ThepresentstudyaddressesexaminingtheexpansivesoilsinArbaMinch–atownwithagreatportionofitsterraincoveredbythesamesoilbutnotconsideredinpreviousstudies.Alaboratory-testingprogramwasplannedandcarriedoutonundisturbedsoilsamplestakenfrom10differentlocationsinthetownforswellingpressuretesting;andamongthese,onepitwasallottedforunsaturatedshearstrengthstudy.rnThelaboratorytestresultsrevealedthattheswellingpressurerangesfrom74.53to571.29kPa,SpecificGravityfrom2.63to2.80,PlasticityIndexfrom49to77%,ShrinkageIndexfrom81to117%andFreeSwellfrom94.0to165.0%.Themeasuredswellingpressuresandthegeotechnicalparametersdeterminedfromidentificationtestsareusedtoassessthevalidityofalreadydevelopedexpressionsbyvariousresearcherstothesiteunderstudyandnewmodels,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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