Pore topology, volume expansion and pressure development in chemically-induced foam cements
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Han, WooJin | - |
dc.contributor.author | Park, Junghee | - |
dc.contributor.author | Cha, Wonjun | - |
dc.contributor.author | Lee, Jong-Sub | - |
dc.contributor.author | Santamarina, J. Carlos | - |
dc.date.accessioned | 2022-12-09T05:41:52Z | - |
dc.date.available | 2022-12-09T05:41:52Z | - |
dc.date.created | 2022-12-08 | - |
dc.date.issued | 2022-10-06 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/146562 | - |
dc.description.abstract | Foam cement is an engineered lightweight material relevant to a broad range of engineering applications. This study explores the effects of aluminum chips on cement-bentonite slurry expansion, pressure development, and the evolution of pore topology. The terminal volume expansion under free-boundary conditions or the pressure build up under volume-controlled conditions are a function of the aluminum mass ratio, bentonite mass ratio, and aluminum chip size. X-ray CT images show that finer aluminum chips create smaller pores but result in a larger volume expansion than when larger sized chips are used; on the other hand, large chip sizes result in unreacted residual aluminum. Time-lapse CT images clearly show the sequence of processes which lead to the development of foam cement: gas bubble nucleation, bubble growth, capillary-driven grain displacement enhanced by the presence of bentonite, coalescence, percolation, gas leakage and pore collapse. These results illustrate the potential to customize the mixture composition of chemically-induced gassy cement to control expansion and pressure build up, and to minimize percolating discontinuities and gas release. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | NATURE PORTFOLIO | - |
dc.subject | AUTOCLAVED AERATED CONCRETE | - |
dc.subject | CELLULAR CONCRETE | - |
dc.subject | ALUMINUM POWDER | - |
dc.subject | MICROSTRUCTURE | - |
dc.subject | WASTE | - |
dc.subject | HYDRATION | - |
dc.title | Pore topology, volume expansion and pressure development in chemically-induced foam cements | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Jong-Sub | - |
dc.identifier.doi | 10.1038/s41598-022-21128-0 | - |
dc.identifier.scopusid | 2-s2.0-85139298410 | - |
dc.identifier.wosid | 000864845400045 | - |
dc.identifier.bibliographicCitation | SCIENTIFIC REPORTS, v.12, no.1 | - |
dc.relation.isPartOf | SCIENTIFIC REPORTS | - |
dc.citation.title | SCIENTIFIC REPORTS | - |
dc.citation.volume | 12 | - |
dc.citation.number | 1 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
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.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.subject.keywordPlus | AUTOCLAVED AERATED CONCRETE | - |
dc.subject.keywordPlus | CELLULAR CONCRETE | - |
dc.subject.keywordPlus | ALUMINUM POWDER | - |
dc.subject.keywordPlus | MICROSTRUCTURE | - |
dc.subject.keywordPlus | WASTE | - |
dc.subject.keywordPlus | HYDRATION | - |
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