Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/162333
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dc.contributor.authorSun, Xinleien_US
dc.contributor.authorYi, Yaolinen_US
dc.date.accessioned2022-10-14T06:45:42Z-
dc.date.available2022-10-14T06:45:42Z-
dc.date.issued2022-
dc.identifier.citationSun, X. & Yi, Y. (2022). Amending excavated soft marine clay with fine incineration bottom ash as a fill material for construction of transportation infrastructure. Transportation Geotechnics, 35, 100796-. https://dx.doi.org/10.1016/j.trgeo.2022.100796en_US
dc.identifier.issn2214-3912en_US
dc.identifier.urihttps://hdl.handle.net/10356/162333-
dc.description.abstractThe fast development of transportation infrastructure has increased the consumption of construction materials, resulting in overexploitation and depletion of natural aggregates. Meanwhile, the increasing amount of solid wastes is another rising problem due to the growing economy and rapid urbanization. Instead of using natural aggregates as fill materials for transportation infrastructure, the solid wastes can be treated and reused as alternatives, which can reduce the reliance on natural resources and landfill. Therefore, in this study, the mixture of two solid wastes, i.e., excavated soft marine clay (MC) and fine incineration bottom ash (IBA) of municipal solid waste, was studied as a fill material for construction of transportation infrastructure. Mixtures of IBA and MC (IBA-MC) with different IBA/MC mass ratios (0/10, 1/9, 2/8, 3/7, 4/6, 5/5, 6/4, and 10/0) were prepared. The Atterberg limits, compactability, unconfined compressive strength (UCS), leaching of heavy metals, mineralogy, and microstructure of IBA-MC were studied. The results showed that, as the content of IBA/MC ratio increased, the water content, liquid limit, and plastic limit of IBA-MC decreased, changing it from plastic paste to semi-solid/solid granular material. The compactability and UCS of IBA-MC were improved when the IBA/MC ratio increased from 1/9 to 5/5. For the IBA-MC with IBA/MC ratio of 1/9 to 5/5, the leaching of heavy metals satisfied the criteria for construction material. In summary, IBA improved the compactability and strength of MC, while MC reduced the leaching of heavy metals from IBA, and IBA-MC with proper ratio could be compacted as a fill material for construction of transportation infrastructure.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.language.isoenen_US
dc.relationRG139/20en_US
dc.relation.ispartofTransportation Geotechnicsen_US
dc.rights© 2022 Elsevier Ltd. All rights reserved.en_US
dc.subjectEngineering::Civil engineeringen_US
dc.titleAmending excavated soft marine clay with fine incineration bottom ash as a fill material for construction of transportation infrastructureen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.identifier.doi10.1016/j.trgeo.2022.100796-
dc.identifier.scopus2-s2.0-85131235820-
dc.identifier.volume35en_US
dc.identifier.spage100796en_US
dc.subject.keywordsTransportation Infrastructureen_US
dc.subject.keywordsMarine Clayen_US
dc.description.acknowledgementThis research is supported by the Ministry of Education, Singapore, under its Academic Research Fund Tier 1 grant (RG139/20).en_US
item.grantfulltextnone-
item.fulltextNo Fulltext-
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