Optimal placement of reinforcement in piggyback landfill liners

dc.contributor.authorMarx, D.H. (David)
dc.contributor.authorJacobsz, Schalk Willem
dc.contributor.emailsw.jacobsz@up.ac.zaen_ZA
dc.date.accessioned2018-04-11T09:22:53Z
dc.date.issued2018-06
dc.description.abstractThe optimal placement of geogrid reinforcement in clay liners subject to differential settlement was investigated both numerically and with centrifuge modelling. Two unreinforced liners, a liner reinforced at the top-quarter depth, a liner reinforced at the bottom-quarter depth and a double reinforced liner were modelled in the centrifuge. Differential settlement was induced on the model liners by lowering a trapdoor overlain with sand. By considering: 1) the magnitude of differential settlement required to induce micro-cracks in the liners, 2) the strain fields across the liners during differential settlement and 3) the distribution of these strain fields, it was found that dividing the available reinforcement equally between the top-quarter and bottom-quarter of the liner, i.e. double reinforcement, represents the optimal reinforcement strategy.en_ZA
dc.description.departmentCivil Engineeringen_ZA
dc.description.embargo2019-06-01
dc.description.librarianhj2018en_ZA
dc.description.sponsorshipThe Deutscher Akademischer Austauschdienst (DAAD), the National Research Foundation of South Africa (NRF, UID: 101637) and the Geosynthetics Interest Group of South Africa (GIGSA).en_ZA
dc.description.urihttp://www.elsevier.com/locate/geotexmemen_ZA
dc.identifier.citationMarx, D.H. & Jacobsz, S.W. 2018, 'Optimal placement of reinforcement in piggyback landfill liners', Geotextiles and Geomembranes, vol. 46, no. 3, pp. 327-337en_ZA
dc.identifier.issn0266-1144 (print)
dc.identifier.issn1879-3584 (online)
dc.identifier.other10.1016/j.geotexmem.2018.01.005
dc.identifier.urihttp://hdl.handle.net/2263/64494
dc.language.isoenen_ZA
dc.publisherElsevieren_ZA
dc.rights© 2018 Elsevier Ltd.. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Geotextiles and Geomembranes. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. A definitive version was subsequently published in Geotextiles and Geomembranes, vol. 46, no. 3, pp. 327-337, 2018. doi : 10.1016/j.geotexmem.2018.01.005.en_ZA
dc.subjectGeosyntheticsen_ZA
dc.subjectGeogrid reinforcementen_ZA
dc.subjectLandfill linersen_ZA
dc.subjectCentrifuge modellingen_ZA
dc.subjectDifferential settlementen_ZA
dc.subjectReinforcementen_ZA
dc.titleOptimal placement of reinforcement in piggyback landfill linersen_ZA
dc.typePostprint Articleen_ZA

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