CaCl2-Accelerated Hydration of Tricalcium Silicate: A STXM Study Combined with Si-29 MAS NMR
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Li, Qinfei | - |
dc.contributor.author | Ge, Yong | - |
dc.contributor.author | Geng, Guoqing | - |
dc.contributor.author | Bae, Sung Chul | - |
dc.contributor.author | Monteiro, Paulo J. M. | - |
dc.date.accessioned | 2022-07-15T19:38:16Z | - |
dc.date.available | 2022-07-15T19:38:16Z | - |
dc.date.created | 2021-05-14 | - |
dc.date.issued | 2015-12 | - |
dc.identifier.issn | 1687-4110 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/155558 | - |
dc.description.abstract | The effect of calcium chloride (CaCl2) on tricalcium silicate (C3S) hydration was investigated by scanning transmission Xray microscopy (STXM) with Near Edge X-ray Absorption Fine Structure (NEXAFS) spectra and Si-29 MAS NMR. STXM is demonstrated to be a powerful tool for studying the chemical composition of a cement-based hydration system. The CaL3,2-edge NEXAFS spectra obtained by examining C3S hydration in the presence of CaCl2 showed that this accelerator does not change the coordination of calcium in the calcium silicate hydrate (C-S-H), which is the primary hydration product. O K-edge NEXAFS is also very useful in distinguishing the chemical components in hydrated C3S. Based on the CaL3,2-edge spectra and chemical component mapping, we concluded that CaCl2 prefers to coexist with unhydrated C3S instead of C-S-H. In Si K-edge NEXAFS analysis, CaCl2 increases the degree of silicate polymerization of C-S-H in agreement with the Si-29 CP/MAS NMR results, which show that the presence of CaCl2 in hydrated C3S considerably accelerates the formation of middle groups (Q(2)) and branch sites (Q(3)) in the silicate chains of C-S-H gel at 1-day hydration. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | HINDAWI LTD | - |
dc.title | CaCl2-Accelerated Hydration of Tricalcium Silicate: A STXM Study Combined with Si-29 MAS NMR | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Bae, Sung Chul | - |
dc.identifier.doi | 10.1155/2015/215371 | - |
dc.identifier.scopusid | 2-s2.0-84950104872 | - |
dc.identifier.wosid | 000366428100001 | - |
dc.identifier.bibliographicCitation | JOURNAL OF NANOMATERIALS, v.2015, pp.1 - 10 | - |
dc.relation.isPartOf | JOURNAL OF NANOMATERIALS | - |
dc.citation.title | JOURNAL OF NANOMATERIALS | - |
dc.citation.volume | 2015 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 10 | - |
dc.type.rims | ART | - |
dc.type.docType | 정기학술지(Article(Perspective Article포함)) | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | Y | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | C-S-H | - |
dc.subject.keywordPlus | CALCIUM-CHLORIDE | - |
dc.subject.keywordPlus | EDGE XANES | - |
dc.subject.keywordPlus | RAY | - |
dc.subject.keywordPlus | MICROSCOPY | - |
dc.subject.keywordPlus | MECHANISM | - |
dc.subject.keywordPlus | GEL | - |
dc.identifier.url | https://www.hindawi.com/journals/jnm/2015/215371/ | - |
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