Stabilization of Oklahoma shales field implementation phases

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dc.contributor.sponsorOklahoma Department of Transportation. Materials and Research Division. Office of Research & Implementation
dc.creatorLaguros, Joakim G.
dc.creatorMedhani, Rezene G.
dc.date.accessioned2019-02-08T23:33:22Z
dc.date.available2019-02-08T23:33:22Z
dc.date.issued1984-9
dc.description.abstractThe improvement of U.S. 77 north of Ponca City, Oklahoma, into a four-lane divided highway involves the use of expansive clay as a subgrade material. To stabilize it, Portland cement, fly ash, lime and their conjunctive use were deemed necessary. Prior to field implementation, laboratory studies were conducted which showed that stabilization reduced the plasticity index substantially. The general amelioration of the shale subgrade is reflected in strength improvement after wet-dry cycles and the upgrading of the shear strength parameters of cohesion and angle of internal friction. The strength of short beams was correlated to unconfined compressive strength. The employment of the flexural and compressive moduli of elasticity is presented as an example of assessing pavement strength versus stresses induced by traffic. Data from X-ray diffractograms asvertain that the activity of the clay minerals in the raw shale is reduced as new crystals of hydrated and unhydrated calcium alumina and calcium silicates are formed. In addition, SEM observations depict these crystals and show that the void area is reduced thus rendering a more densified fabric.
dc.description.peerreviewNo
dc.format.extent228 pages
dc.format.extent25,957,224 bytes
dc.format.mediumapplication.pdf
dc.identifier.govdocFHWA-OK
dc.identifier.otherOklahoma Department of Transportation State Planning and Research
dc.identifier.urihttps://hdl.handle.net/11244/317182
dc.languageen_US
dc.relation.ispartofseriesNo
dc.relation.requiresAdobe Acrobat Reader
dc.subject.keywordsCement
dc.subject.keywordsDurability
dc.subject.keywordsFly ash
dc.subject.keywordsLime
dc.subject.keywordsSEM
dc.subject.keywordsSHale
dc.subject.keywordsStabilization
dc.subject.keywordsX-ray diffraction
dc.titleStabilization of Oklahoma shales field implementation phases
dc.typeTechnical Report
dc.type.materialtext

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