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dc.contributor.authorEkaputri, Januarti Jaya
dc.contributor.authorFujiyama, Chikako
dc.contributor.authorChijiwa, Nobuhiro
dc.contributor.authorHo, Tu Dac
dc.contributor.authorNguyen, Hung Thanh
dc.date.accessioned2021-08-05T06:59:55Z
dc.date.available2021-08-05T06:59:55Z
dc.date.issued2021-04-20
dc.description.abstractThis paper presents the benefits of PVA fibers in improving the mechanical properties of class F fly-ash-based geopolymer concrete. The activator used in the geopolymer was 8M sodium hydroxide (NaOH) and sodium silicate (Na<sub>2</sub>SiO<sub>3</sub>), with a mass ratio of Na<sub>2</sub>SiO<sub>3</sub> to NaOH varied from 1.5 to 2.5. Cylindrical specimens with a diameter of 100 mm and a height of 200 mm were prepared for mechanical strength tests. The PVA fibers in the geopolymers were fixed at 0.4%, 0.6%, and 0.8% by total volume. Some mechanical tests were carried out, including compression, splitting, direct tensile and elastic modulus tests. It was found that the mixture with a ratio of alkalis of 1.5 and the PVA fiber content of 0.4% had the best workability. The highest compressive strength was obtained in a mixture with alkali activator ratios of 1.5 and 2.0, and with 0.6% fiber addition. The ratio of the tensile (and splitting-tensile) strength to compressive strength was found to increase with the certain amount of PVA fibers and the ratio of the alkali activators. The workability issue and fiber direction in the concrete were the dominant factors influencing the properties of geopolymer concrete.en_US
dc.identifier.citationEkaputri, J. J., Fujiyama, C., Chijiwa, N., Ho, T. D., & Nguyen, H. T. (2021). Improving Geopolymer Characteristics with Addition of Poly-Vinyl Alcohol (PVA) Fibers. Civil Engineering Dimension, 23(1), 28-34.en_US
dc.identifier.cristinIDFRIDAID 1902948
dc.identifier.doihttps://doi.org/10.9744/ced.23.1.28-34
dc.identifier.issn1410-9530
dc.identifier.issn1979-570X
dc.identifier.urihttps://hdl.handle.net/10037/21936
dc.language.isoengen_US
dc.publisherPetra Christian Universityen_US
dc.relation.journalDimensi Teknik Sipil
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2021 The Author(s)en_US
dc.subjectVDP::Technology: 500::Chemical engineering: 560en_US
dc.subjectVDP::Teknologi: 500::Kjemisk teknologi: 560en_US
dc.titleImproving Geopolymer Characteristics with Addition of Poly-Vinyl Alcohol (PVA) Fibersen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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