Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/162200
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dc.contributor.authorNong, Xue Fengen_US
dc.contributor.authorRahardjo, Hariantoen_US
dc.contributor.authorLee, Daryl Tsen-Tiengen_US
dc.contributor.authorLeong, Eng Choonen_US
dc.contributor.authorFong, Yok-Kingen_US
dc.date.accessioned2022-10-10T04:35:17Z-
dc.date.available2022-10-10T04:35:17Z-
dc.date.issued2021-
dc.identifier.citationNong, X. F., Rahardjo, H., Lee, D. T., Leong, E. C. & Fong, Y. (2021). Effects of organic content on soil-water characteristic curve and soil shrinkage. Environmental Geotechnics, 8(7), 442-451. https://dx.doi.org/10.1680/jenge.19.00028en_US
dc.identifier.issn2051-803Xen_US
dc.identifier.urihttps://hdl.handle.net/10356/162200-
dc.description.abstractOrganic matters commonly exist in the subsoil within the tree rooting zones. The organic content of soil has been known to affect soil properties. In this study, the soil organic contents at various locations around trees were investigated and found to be variable due to the ground flora and tree roots. The range of soil organic content for the current study was between 0.9-12.5%. The objective of this study was to investigate the effects of the organic content on the shrinkage and Soil-Water Characteristic Curve (SWCC) of the soils during rainy and dry seasons when water content of the soil changes. Soil samples were collected from two locations on Singapore Island at depths of 0.1 m and 0.3 m, one site on the western side of the island and the other site at a coastal area along the eastern shore. Centrifuge was used to measure the water content of the specimens at suction up to 250kPa and chilled-mirror psychrometry was used for the higher suction. Shrinkage tests were also conducted to obtain the shrinkage properties. The results show that organic content influenced the shrinkage and SWCC where a higher organic content was associated with a greater shrinkage rate and a higher suction corresponding to the residual water content. For the finer soils, a higher organic content comes with a lower air-entry value.en_US
dc.description.sponsorshipAgency for Science, Technology and Research (A*STAR)en_US
dc.description.sponsorshipNanyang Technological Universityen_US
dc.description.sponsorshipNational Environmental Agency (NEA)en_US
dc.description.sponsorshipNational Parks Boarden_US
dc.language.isoenen_US
dc.relation.ispartofEnvironmental Geotechnicsen_US
dc.rights© 2022 ICE Publishing. All rights reserved. This paper was published in Environmental Geotechnics and is made available with permission of ICE Publishing.en_US
dc.subjectEngineering::Civil engineering::Geotechnicalen_US
dc.titleEffects of organic content on soil-water characteristic curve and soil shrinkageen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Civil and Environmental Engineeringen_US
dc.contributor.researchNanyang Environment and Water Research Instituteen_US
dc.identifier.doi10.1680/jenge.19.00028-
dc.description.versionSubmitted/Accepted versionen_US
dc.identifier.issue7en_US
dc.identifier.volume8en_US
dc.identifier.spage442en_US
dc.identifier.epage451en_US
dc.subject.keywordsStrength and Testing of Materialsen_US
dc.subject.keywordsTesting and Evaluationen_US
dc.subject.keywordsUnsaturated Soilsen_US
dc.description.acknowledgementThis research was conducted in collaboration with the National Environment Agency (NEA), National Park Board (NParks), Institute of High-Performance Computing, ASTAR* and Nanyang Environment & Water Research Institute (NEWRI), Nanyang Technological University (NTU), Singapore.en_US
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