Construction and performance of the stabilized base course on U.S. 77 Ponca City, Kay County (FHWA-OK-87-7) 2128

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dc.contributor.sponsorOklahoma Department of Transportation. Materials and Research Division. Office of Research & Implementation
dc.creatorLaguros, Joakim G.
dc.creatorKeshawarz, Saleh M.
dc.date.accessioned2018-11-06T16:47:02Z
dc.date.available2018-11-06T16:47:02Z
dc.date.issued1987-7
dc.description.abstractThis study investigates the field implementation of shale stabilization on an experimental project. A number of test sections were set on the south bound lane of U.S. Highway 77, north of Ponca City, Kay County, Oklahoma. To compare the effectiveness of various stabilizing agents, the base courses of these test sections were stabilized with cement (14%) I quicklime (4.5%), fly ash ( 25%), and an optimum mixture of 8% cement + 3% quicklime + 18% fly ash used conjunctively. Also a control (non-stabilized) section was set as a reference section. Analyses of the samples prepared during construction and those cored from under the pavement after construction showed significant amelioration of the engineering properties of stabilized shale as manifested by their plasticity, compressive and beam strength compared to raw (non-stabilized) shale. Benkelman beam measurements ascertained the improvement in deformation resistance. The microstructure of stabilized shale was studied using X-ray diffraction (XRD). The non basal (hkl) reflections in stabilized oriented specimens suggest that the clay particles in the stabilized shale acquired high resistance to dispersive forces. This, together with the reduction in the integrated intensities of clay minerals help explain the improved stability as a result of stabilization. SEM observations in conjunction with EDS, depicted the presence of .some newly formed hydration products and a rather dense degree of packing. The various data converge to the conclusion that field stabilization is a viable solution to the use of expansive shales.
dc.description.peerreviewNo
dc.description.versionFinal Report
dc.format.extent244 pages
dc.format.extent19,414,836 bytes
dc.format.mediumapplication.pdf
dc.identifier.govdocFHWA-OK-87-7
dc.identifier.otherOklahoma Department of Transportation State Planning and Research item number 2128
dc.identifier.urihttps://hdl.handle.net/11244/302000
dc.languageen_US
dc.relation.ispartofseriesNo
dc.relation.requiresAdobe Acrobat Reader
dc.subject.keywordsShale stabilization
dc.subject.keywordsCement
dc.subject.keywordsLime
dc.subject.keywordsFly ash
dc.subject.keywordsPavement performance
dc.subject.keywordsXRD
dc.subject.keywordsSEM
dc.subject.keywordsStrength
dc.titleConstruction and performance of the stabilized base course on U.S. 77 Ponca City, Kay County (FHWA-OK-87-7) 2128
dc.typeTechnical Report
dc.type.materialtext

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