8191

7589

كارشناسي ارشد

مكانيك سنگ

اصفهان: دانشگاه صنعتي اصفهان، دانشكده معدن

1392

نه،67ص.: مصور،جدول،نمودار

ص.ع.به فارسي و انگليسي

حميد هاشم الحسيني، عليرضا باغبانان

علي احمدي

5/9/92

مهدي ابطحي، لهراسب فرامرزي

مهندسي معدن

ID7589

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

68 Isfahan University of Technology Department of Mining Engineering Use of bio grouting method for soil consolidation in laboratory scale operationally by focus on the dune fixation Farshad Ramezanifar f ramezanifar@mi iut ac ir Date of Submission 2013 09 21 Department of Mining Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language FarsiSupervisor Hamid Hashemolhoseini hamidh@cc iut ac irSupervisor Alireza Baghbanan bagh110@cc iut ac irAbstractUse of biological manner to produce Calcite cement is a new manner for soilimprovement in geotechnical engineering Cement was produced among the soil withnon pathogenic microorganisms that are found naturally in soil can bind the soil graintogether These manners are very ecological because we use naturally microorganisms In thisthesis we use a bacterium called Sporosarcina Pasteurii PTCC 1645 for soilimprovement Scientists showed that we could produce Calcite cement but inoperationally scale we try to introduce material that can to keep other materialsbetween its layer structure and release them in a time interval slowly For this purposewe used bentonit For measurement of penetration depth improvement depth with improver slurry biogroute bentonit we used a PVC mold with 1 meter height 110 millimeterdiameter full of sand Soil samples was compacted in this cylindrically mold toachieved a density of 1 65 gr cm3 and the grouting procedure was initialized Afterprepare this mold we splashed improver slurry to 3 time We saw the sand column wasimproved in 10 cm to 30 cm and bio logical slurry penetrated to 50 cm We used a test called canonical penetration that was performed in wet dry condition Also we used a ferrous cone weight 250 gr for a qualitative study of surfaceresistance This test showed that cone penetration was reduced even to zero In a permeability test between tow samples that first sample was improved with biogrout and second sample was improved with bio grout bentonit improver slurry wesaw that bentonit didn t have any role to bind the soil grain together because if thebentonit had a role in this improvement we could see a large differences betweenvalues of permeability coefficients while the permeability test results didn t show anydifference Keywords soil bio logical improvement dune fixation canonical penetration test penetration depth improvement depth

حميد هاشم الحسيني، عليرضا باغبانان

علي احمدي

مهدي ابطحي، لهراسب فرامرزي