Effects of elevated temperature on mineralogical/microstructural changes and mechanical responses of clay soil

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dc.authoridVakili, Amir Hossein/0000-0001-8920-172X
dc.contributor.authorAryanpour, Marzieh
dc.contributor.authorFalamaki, Amin
dc.contributor.authorVakili, Amir Hossein
dc.date.accessioned2024-09-29T16:00:29Z
dc.date.available2024-09-29T16:00:29Z
dc.date.issued2023
dc.departmentKarabük Üniversitesien_US
dc.description.abstractHigh temperatures can affect soil performance and alter its engineering behavior. In this study, a series of ex-periments were carried out on various soil samples provided under different heating conditions (i.e., heated sample and heated clay) to evaluate the various temperatures effects (elevated from 20 to 900 degrees C) on physical, chemical, mechanical, and mineralogical/microstructural characteristics of clayey samples. The main objective of this study is to investigate the influence of temperature and heating conditions on permeability, unconfined compressive strength, shear wave velocity, weight, color, pH, EC, XRD, and FESEM. The results indicated that dolomite can be broken down into magnesium oxide and calcite, and alpha quartz can be broken down into beta quartz. Calcite minerals decompose into calcium oxide at 900 degrees C, beta-quartz into alpha-cristobalite, and kaolinite into mullite and gehlenite. The decomposition of water from the hydroxyl structures of minerals in burnt soil is carbonated on the soil's surface up to a temperature of 700 degrees C; thus, the compressive strength of clay in the temperature range of 500-700 degrees C is approximately 97% lower than its maximum. At 900 degrees C, the formation of mullite, gehlenite, and various oxide structures, such as calcium and magnesium oxide, changes the structure of clay to a glassy and amorphous structure. This improves the strength of clay from 0.17 to 3.7 MPa; however, the permeability increases significantly due to the unstable glass structure. The shear wave velocity increased by approximately 2.74 times at 200 degrees C. It decreased from 300 to 700 degrees C, then increased to 416.7 m/s at 900 degrees C.en_US
dc.identifier.doi10.1016/j.pce.2023.103493
dc.identifier.issn1474-7065
dc.identifier.issn1873-5193
dc.identifier.scopus2-s2.0-85173798266en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1016/j.pce.2023.103493
dc.identifier.urihttps://hdl.handle.net/20.500.14619/5186
dc.identifier.volume132en_US
dc.identifier.wosWOS:001099121400001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofPhysics and Chemistry of the Earthen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectTemperatureen_US
dc.subjectClay soilen_US
dc.subjectMechanical responseen_US
dc.subjectMineralogical changesen_US
dc.subjectMicrostructural analysisen_US
dc.titleEffects of elevated temperature on mineralogical/microstructural changes and mechanical responses of clay soilen_US
dc.typeArticleen_US

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