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DC Field | Value | Language |
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dc.citation.endPage | 685 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 673 | - |
dc.citation.title | CEMENT AND CONCRETE RESEARCH | - |
dc.citation.volume | 42 | - |
dc.contributor.author | Oh, Jae Eun | - |
dc.contributor.author | Moon, Juhyuk | - |
dc.contributor.author | Oh, Sang-Gyun | - |
dc.contributor.author | Clark, Simon M. | - |
dc.contributor.author | Monteio, Paulo J. M. | - |
dc.date.accessioned | 2023-12-22T05:10:34Z | - |
dc.date.available | 2023-12-22T05:10:34Z | - |
dc.date.created | 2013-06-18 | - |
dc.date.issued | 2012-05 | - |
dc.description.abstract | This study explores the reaction products of alkali-activated Class C fly ash-based aluminosilicate samples by means of high-resolution synchrotron X-ray diffraction (HSXRD), scanning electron microscope (SEM), and compressive strength tests to investigate how the readily available aluminum affects the reaction. Class C fly ash-based aluminosilicate raw materials were prepared by incorporating Na-aluminate into the original fly ashes, then alkali-activated by 10 M NaOH solution. Incorporating Na-aluminate reduced the compressive strength of samples, with the reduction magnitude relatively constant regardless of length of curing period. The HSXRD provides evidence of the co-existence of C-S-H with geopolymeric gels and strongly suggests that the C-S-H formed in the current system is C-S-H(I). The back-scattered electron images suggest that the C-S-H(I) phase exists as small grains in a finely intermixed form with geopolymeric gels. Despite providing extra source of aluminum, adding Na-aluminate to the mixes did not decrease the Si/Al ratio of the geopolymeric gel. | - |
dc.identifier.bibliographicCitation | CEMENT AND CONCRETE RESEARCH, v.42, no.5, pp.673 - 685 | - |
dc.identifier.doi | 10.1016/j.cemconres.2012.02.002 | - |
dc.identifier.issn | 0008-8846 | - |
dc.identifier.scopusid | 2-s2.0-84858704834 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/9733 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84858704834 | - |
dc.identifier.wosid | 000303221600004 | - |
dc.language | 영어 | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Microstructural and compositional change of NaOH-activated high calcium fly ash by incorporating Na-aluminate and co-existence of geopolymeric gel and C-S-H(I) | - |
dc.type | Article | - |
dc.relation.journalWebOfScienceCategory | Construction & Building Technology; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Construction & Building Technology; Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | C-S-H | - |
dc.subject.keywordAuthor | X-ray diffraction | - |
dc.subject.keywordAuthor | Fly ash | - |
dc.subject.keywordAuthor | Alkali activated cement | - |
dc.subject.keywordAuthor | Geopolymer | - |
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