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dc.contributor.author이한승-
dc.date.accessioned2019-02-11T06:22:22Z-
dc.date.available2019-02-11T06:22:22Z-
dc.date.issued2018-11-
dc.identifier.citationMATERIALS CHARACTERIZATION, v. 145, Page. 323-328en_US
dc.identifier.issn1044-5803-
dc.identifier.issn1873-4189-
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S1044580318312415-
dc.identifier.urihttps://repository.hanyang.ac.kr/handle/20.500.11754/98804-
dc.description.abstractPozzolanic materials, micro- and nano-, have been found to improve the durability properties of cement-based materials by refining their pore structure. As a relatively newer material, the modifying effects of nanosilica on pore structure are still inconclusive in the literature. In this study, this was characterized by implementing dual beam SEM/FIB, which can generate 3D models of porous materials for quantitative analysis. The sample is milled by focused ion beam layer-by-layer, and each surface layer is 2D imaged via scanning electron microscopy. Three types of pores - large capillary pore, medium capillary pore and gel pore - can be observed. A 3D pore structure model is then reconstructed from 1000 of these 2D images, from which porosity and pore size distribution can be calculated. Cement pastes incorporating nanosilica and silica fume were compared. The porosity and pore diameter were found to decrease with the inclusion of nanosilica. Furthermore, reduction in capillary pores and subsequent increase in gel pores were also observed.en_US
dc.description.sponsorshipThe authors would like to acknowledge RPM Belgium Vandex for financial support, materials, and technical consultation. Also, the authors would like to acknowledge the technical support by the staff of Columbia University's Carleton Laboratory and City University of New York's Advanced Science Research Center (CUNY ASRC).en_US
dc.language.isoen_USen_US
dc.publisherELSEVIER SCIENCE INCen_US
dc.subjectNanosilicaen_US
dc.subjectScanning electron microscopy (SEM)/focused ion beam (FIB)en_US
dc.subject3D pore structureen_US
dc.subjectCement pasteen_US
dc.titlePore structure refinement of cement paste incorporating nanosilica: Study with dual beam scanning electron microscopy/focused ion beam (SEM/FIB)en_US
dc.typeArticleen_US
dc.relation.volume145-
dc.identifier.doi10.1016/j.matchar.2018.08.045-
dc.relation.page323-328-
dc.relation.journalMATERIALS CHARACTERIZATION-
dc.contributor.googleauthorLim, Seungmin-
dc.contributor.googleauthorLee, Han-Seung-
dc.contributor.googleauthorKawashima, Shiho-
dc.relation.code2018002625-
dc.sector.campusE-
dc.sector.daehakCOLLEGE OF ENGINEERING SCIENCES[E]-
dc.sector.departmentDIVISION OF ARCHITECTURE-
dc.identifier.pidercleehs-
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COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ARCHITECTURE(건축학부) > Articles
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