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dc.contributor.authorAli., H.*
dc.contributor.authorMohamed, Mostafa H.A.*
dc.date.accessioned2018-05-10T14:04:59Z
dc.date.available2018-05-10T14:04:59Z
dc.date.issued2018-09
dc.identifier.citationAli H and Mohamed M (2018) The effects of lime content and environmental temperature on the mechanical and hydraulic properties of extremely high plastic clays. Applied Clay Science. 161: 203-210.en_US
dc.identifier.urihttp://hdl.handle.net/10454/15852
dc.descriptionYesen_US
dc.description.abstractThis paper focuses on monitoring the evolution of lime-clay reactions using geotechnical parameters as a function of lime content and environmental temperature. Lime contents of 5, 7, 9, 11 and 13% by dry weight of expansive clay powder were added to prepare lime-clay specimens. The specimens were prepared at the same dry unit weight of 12.16 kN/m3 and moisture content of 40% except for tests aimed at the determination of dry unit weight as a function of mellowing period. Prepared specimens were mellowed or cured at two different ambient temperatures of 20 °C and 40 °C. Results attained from Unconfined Compressive Strength and permeability tests were employed to assess the impact of lime content on the mechanical and hydraulic properties of lime treated expansive clays. The results revealed that at the beginning, the rate of strength gain is remarkably fast for a particular period of time which is dependent on lime content. Furthermore, the strength gain on specimens cured at 40 °C is 8 times higher than that observed on specimens cured at 20 °C which highlights significant effect for the environmental temperature on accelerating the chemical reactions. Reduced dry unit weight due to increased resistance to compactability is observable with increasing lime content and higher environmental temperature. Accelerated pozzolanic reaction at higher environmental temperature resulted in permeability coefficient of specimens mellowed for 24 h at 40 °C to be higher than those mellowed at 20 °C. The results also highlighted that the permeability coefficient would be relatively stable when expansive clays were treated with small amounts of lime e.g. 5%.en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttps://doi.org/10.1016/j.clay.2018.04.012en_US
dc.rights© 2018 Elsevier B.V. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.en_US
dc.subjectLime treatmenten_US
dc.subjectExpansive clayen_US
dc.subjectMechanical behaviouren_US
dc.subjectHydraulic behaviouren_US
dc.subjectSwelling pressureen_US
dc.subjectUnconfined compressive strengthen_US
dc.titleThe effects of lime content and environmental temperature on the mechanical and hydraulic properties of extremely high plastic claysen_US
dc.status.refereedYesen_US
dc.date.Accepted2018-04-11
dc.date.application2018-04-25
dc.typeArticleen_US
dc.type.versionAccepted Manuscripten_US
refterms.dateFOA2019-03-08T11:57:22Z


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