The Unsaturated Shear Strength and Swelling Characteristics of Expansive Soils of Arbaminch
| dc.contributor.advisor | Hadush, Seged (PhD) | |
| dc.contributor.author | Bantayeu, Uba | |
| dc.date.accessioned | 2021-02-04T04:46:59Z | |
| dc.date.accessioned | 2023-11-11T12:51:19Z | |
| dc.date.available | 2021-02-04T04:46:59Z | |
| dc.date.available | 2023-11-11T12:51:19Z | |
| dc.date.issued | 2011-06 | |
| dc.description.abstract | In Ethiopia, so many researches were done on characterizing expansive soils of several towns But 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. Thelaboratorytestresultsrevealedthattheswellingpressurerangesfrom74.53to571.29kPa, SpecificGravityfrom2.63to2.80, PlasticityIndexfrom49to77%, ShrinkageIndexfrom81to117%andFreeSwellfrom94.0to165.0%The measured swelling pressures and the geotechnical parameters determined fromidentificationtestsareusedtoassessthevalidityofalreadydevelopedexpressionsbyvariousresearcherstothesiteunderstudyandnewmodels,thatrelateswellingpressurewithindexandphysicalproperties,aredevelopedusingSPSS16.0forwindowssoftware. Theresultsfromunsaturatedshearstrengthtestsperformedwitha50kNmodifieddoublewalltriaxialmachineonanundisturbedsamplesettingmatricsuctiontobe100kPa,150kPaand200kPaforaneffectiveconsolidationpressureof200kPahaveclearlyindicatedthesaturatedcasetoyieldsmallershearstrengththantheunsaturatedone.Themaximumdeviatorstressshowedtoincreasefrom107.61kPato174.35kPawithanincreaseinmatricsuctionbuttheshapeofthestress-straindiagramremainedidentical. | en_US |
| dc.identifier.uri | http://etd.aau.edu.et/handle/12345678/24971 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | Addis Ababa University | en_US |
| dc.subject | Shear Strength | en_US |
| dc.subject | Expansive Soils | en_US |
| dc.subject | Arbaminch | en_US |
| dc.title | The Unsaturated Shear Strength and Swelling Characteristics of Expansive Soils of Arbaminch | en_US |
| dc.type | Thesis | en_US |