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dc.contributor.authorZhang, Wan-lu
dc.contributor.authorMcCabe, Bryan A.
dc.contributor.authorChen, Yong-hui
dc.contributor.authorForkan, Thomas J.
dc.date.accessioned2019-01-08T13:55:22Z
dc.date.issued2018-09-21
dc.identifier.citationZhang, Wan-lu, McCabe, Bryan A., Chen, Yong-hui, & Forkan, Thomas J. (2018). Unsaturated behaviour of a stabilized marine sediment: A comparison of cement and GGBS binders. Engineering Geology, 246, 57-68. doi: https://doi.org/10.1016/j.enggeo.2018.09.020en_IE
dc.identifier.issn1872-6917
dc.identifier.urihttp://hdl.handle.net/10379/14768
dc.description.abstractIn order to ascertain the contaminant-encapsulation potential of stabilized soil, an understanding of its unsaturated hydraulic behaviour, specifically the Soil Water Retention Curve (SWRC), is paramount. In this paper, centrifuge testing was used to obtain SWRCs for sediment dredged from an Irish harbour, stabilized with Ordinary Portland cement (OPC) and Ground Granulated Blast Furnace Slag (GGBS) binders. The effects of the different binder proportions and different curing times on both the Unconfined Compressive Strength (UCS) and SWRC were investigated, with the support of Scanning Electron Microscope (SEM) data. The Fredlund and Xing (1994) empirical model was found to provide the best fit to the stabilized sediment SWRCs. The water holding capacity was found to increase with increased binder content, increased GGBS proportion in the binder and increased curing time, suggesting that high-GGBS binders are most suitable for locking in contaminants. An examination of relationships between one of the model parameters (Air Entry Value, AEV) and UCS further highlights differences in strength and water retention mechanisms between the two binder combinations. In addition to its well-known environmental credentials, this research highlights the technical merits in using GGBS in contaminated sediment reuse projects.en_IE
dc.description.sponsorshipThis study was funded by the Irish Environmental Protection Agency (Small Scale Study 2017-W-SS-28). The 24-month PhD secondment of the first author from Hohai University, Nanjing, China to the National University of Ireland, Galway, Ireland was funded by the Chinese Scholarship Council.en_IE
dc.formatapplication/pdfen_IE
dc.language.isoenen_IE
dc.publisherElsevieren_IE
dc.relation.ispartofEngineering Geologyen
dc.subjectDredged sedimenten_IE
dc.subjectContaminantsen_IE
dc.subjectSWRCen_IE
dc.subjectWater holding capacityen_IE
dc.subjectUnconfined compressive strengthen_IE
dc.subjectOPCen_IE
dc.subjectGGBSen_IE
dc.subjectWATER CHARACTERISTIC CURVESen_IE
dc.subjectBLAST-FURNACE SLAGen_IE
dc.subjectSTRENGTH CHARACTERISTICSen_IE
dc.subjectGEOTECHNICAL PROPERTIESen_IE
dc.subjectENGINEERING PROPERTIESen_IE
dc.subjectSULFATE ATTACKen_IE
dc.subjectLIMEen_IE
dc.subjectPERFORMANCEen_IE
dc.subjectACTIVATIONen_IE
dc.subjectTIMEen_IE
dc.titleUnsaturated behaviour of a stabilized marine sediment: A comparison of cement and GGBS bindersen_IE
dc.typeArticleen_IE
dc.date.updated2019-01-04T15:18:37Z
dc.identifier.doi10.1016/j.enggeo.2018.09.020
dc.local.publishedsourcehttps://doi.org/10.1016/j.enggeo.2018.09.020en_IE
dc.description.peer-reviewedpeer-reviewed
dc.contributor.funderIrish Environmental Protection Agencyen_IE
dc.contributor.funderChinese Scholarship Councilen_IE
dc.description.embargo2020-09-21
dc.internal.rssid15625674
dc.local.contactBryan Mccabe, Dept. Of Civil Engineering, Coll Engineering & Informatics, Room Eng-1040, Nui Galway. 2021 Email: bryan.mccabe@nuigalway.ie
dc.local.copyrightcheckedYes
dc.local.versionACCEPTED
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