Modification of hydraulic conductivity of sandy soil using seawater and alkaline solutions

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dc.authoridOsama Dawoud / 0000-0002-3138-0793en_US
dc.authorscopusidOsama Dawoud / 56229410100
dc.authorwosidOsama Dawoud / AAN-8912-2020
dc.contributor.authorDawoud, Osama
dc.date.accessioned2020-08-30T20:01:33Z
dc.date.available2020-08-30T20:01:33Z
dc.date.issued2020
dc.departmentİstinye Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, İnşaat Mühendisliği Bölümüen_US
dc.descriptionErtek Group;Kibris Muhendislik ve Mimarlik Proje Ofisi;Ozyalcin Construction;Tosunoglu Insaat;Tunali Insaaten_US
dc.description5th International Conference on New Advances in Civil Engineering, ICNACE 2019 -- 8 November 2019 through 10 November 2019 -- -- 160101en_US
dc.description.abstractAltering soil characteristics by precipitation of the calcium carbonate between soil particles is attracting the interest of geotechnical engineers for a wide range of applications. However, current applied approaches still face challenges such as the high cost of materials, difficult handling of precursors, and hazardous by-products. The study described by the current paper investigated the modification of hydraulic conductivity of sandy soil by chemical precipitation of the calcium carbonate using seawater as the source of calcium. The designed experiment involved treatment of bench-scale soil columns by two readily mixed solutions. One of the solutions served as the source of calcium ions and the other contained carbonate ions. The current paper compares behavior of hydraulic reduction considering different resources. The results showed that the crystals formed in small sizes as a result of the instantaneous reaction of calcium precipitation; and thus, crystals transport with the solution as colloids. Accordingly, reductions in hydraulic conductivity were mainly governed by the filtration mechanisms; and the precipitated calcium carbonate was retained close to the injection point. Conducting treatment using seawater as the source for calcium ions induced 65% reduction in hydraulic conductivity at 5.5 g CaCO3/g soil. This reduction is identical to the case when the artificial source was used. Further treatment by the artificial source of calcium reduced the hydraulic conductivity of sandy soil by 97.2%. These outcomes suggest that the chemically induced calcium carbonate precipitation from seawater can be employed by some geo-environmental applications which are conducted in the vicinity of the shore and require reduction of hydraulic conductivity. © Published under licence by IOP Publishing Ltd.en_US
dc.identifier.citationDawoud, O. (2020). Modification of hydraulic conductivity of sandy soil using seawater and alkaline solutions.en_US
dc.identifier.doi10.1088/1757-899X/800/1/012011en_US
dc.identifier.issn1757-8981en_US
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-85085581372en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.urihttps://doi.org/10.1088/1757-899X/800/1/012011
dc.identifier.urihttps://hdl.handle.net/20.500.12713/284
dc.identifier.volume800en_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorDawoud, Osamaen_US
dc.language.isoenen_US
dc.publisherInstitute of Physics Publishingen_US
dc.relation.ispartofIOP Conference Series: Materials Science and Engineeringen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.titleModification of hydraulic conductivity of sandy soil using seawater and alkaline solutionsen_US
dc.typeConference Objecten_US

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