Physico-mechanical properties of self-compacting concrete containing treated cold-bonded fly ash lightweight aggregates and SiO2 nano-particles

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dc.contributor.authorGuneyisi, Ethan
dc.contributor.authorGesoglu, Mehmet
dc.contributor.authorAzez, Oday Ali
dc.contributor.authorOz, Hatice Oznur
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2015
dc.departmentNiğde ÖHÜ
dc.description.abstractIn this experimental study, the physico-mechanical properties of self-compacting lightweight aggregate concrete (SCLC) containing artificial lightweight aggregate (LWA) made from fly ash (FA) through cold-bonded process are investigated. Coarse LWAs were treated with a soluble solution of sodium silicates (WG) in order to enhance quality. However, the binary and ternary use of fly ash (FA) and silicon dioxide nanoparticles (nS) were considered in the production of SCLC. For this, a total of 18 SCLC mixtures were designed at three different w/b ratios of 0.25, 0.37 and 0.50, and total binder contents of 600, 550 and 450 kg/m(3), respectively. The physical properties were tested for water sorptivity, gas permeability and water permeability, as well as for drying shrinkage. The use of treated instead of untreated LWA reduces the negative effect of w/b ratio increment of the drying shrinkage of SCLCs. The results showed that using 5.0% nano-silica and treated aggregate decreased the drying shrinkage as much as 23%. However, a significant reduction in SCLC permeability was achieved by including nS and/or treated LWAs, specifically, a reduction of up to 70% for gas permeability at 90 days. Moreover, a lower compressive strength resulted due to the use of untreated aggregate and higher w/b ratio. As a general result, it was determined that a better performance is revealed at 90 days for SCLCs containing 5% nS and treated LWAs, regardless of w/b ratio. (C) 2015 Elsevier Ltd. All rights reserved.
dc.identifier.doi10.1016/j.conbuildmat.2015.10.117
dc.identifier.endpage1153
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.scopus2-s2.0-84955309250
dc.identifier.scopusqualityQ1
dc.identifier.startpage1142
dc.identifier.urihttps://dx.doi.org/10.1016/j.conbuildmat.2015.10.117
dc.identifier.urihttps://hdl.handle.net/11480/3834
dc.identifier.volume101
dc.identifier.wosWOS:000366227100119
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherELSEVIER SCI LTD
dc.relation.ispartofCONSTRUCTION AND BUILDING MATERIALS
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectDrying shrinkage
dc.subjectPermeation characteristics
dc.subjectFly ash
dc.subjectNano silica
dc.subjectWater glass treatment
dc.titlePhysico-mechanical properties of self-compacting concrete containing treated cold-bonded fly ash lightweight aggregates and SiO2 nano-particles
dc.typeArticle

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