Acceleration of cement hydration from supplementary cementitious materials: Performance comparison between silica fume and hydrophobic silica SCIE SCOPUS

DC Field Value Language Jeong, Y. - Kang, S.-H. - Kim, M.O. - Moon, J. - 2020-12-10T07:46:17Z - 2020-12-10T07:46:17Z - 2020-07-06 - 2020-09 -
dc.identifier.issn 0958-9465 -
dc.identifier.uri -
dc.description.abstract This study investigated the effect of the incorporation of the supplementary cementitious material (SCM) of hydrophobic silica and silica fume on the mechanical properties and hydration behavior of ordinary Portland cement (OPC). Silica fume is a well-known SCM owing to its good compatibility with OPC by providing seeding sites for nucleation and subsequent acceleration and reactive silica for pozzolanic reaction. This study revealed that mortars containing hydrophobic silica developed higher compressive strength than pure mortar and mortar with regular silica fume during all curing ages. Furthermore, it was confirmed that it contributed to produce more hydration products and consume more portlandite, implying its acceleration and pozzolanic reaction, respectively. Although its particle size is larger than that of silica fume, its hydrophobicity accelerated the hydration reaction due to the better dispersion of OPC in the system, which leads to more exposure of cement particles to available water. These effects could cause higher dissolution of the particles and faster interfacial precipitation of hydration products. Therefore, the hydrophobic silica outperformed the seeding-based acceleration effect of silica fume. -
dc.description.uri 1 -
dc.language English -
dc.publisher ELSEVIER SCI LTD -
dc.title Acceleration of cement hydration from supplementary cementitious materials: Performance comparison between silica fume and hydrophobic silica -
dc.type Article -
dc.citation.title CEMENT & CONCRETE COMPOSITES -
dc.citation.volume 112 -
dc.identifier.bibliographicCitation CEMENT & CONCRETE COMPOSITES, v.112 -
dc.identifier.doi 10.1016/j.cemconcomp.2020.103688 -
dc.identifier.scopusid 2-s2.0-85086896611 -
dc.identifier.wosid 000556826200036 -
dc.type.docType Article -
dc.description.journalClass 1 -
dc.description.isOpenAccess N -
dc.subject.keywordPlus BLAST-FURNACE SLAG -
dc.subject.keywordPlus RICE HUSK ASH -
dc.subject.keywordPlus C-S-H -
dc.subject.keywordPlus PORTLAND-CEMENT -
dc.subject.keywordPlus BLENDED CEMENTS -
dc.subject.keywordPlus FLY-ASH -
dc.subject.keywordPlus MECHANICAL-PROPERTIES -
dc.subject.keywordPlus HIGH VOLUMES -
dc.subject.keywordPlus STRENGTH -
dc.subject.keywordPlus SYSTEMS -
dc.subject.keywordAuthor Hydrophobic silica -
dc.subject.keywordAuthor Supplementary cementitious materials -
dc.subject.keywordAuthor Silica fume -
dc.subject.keywordAuthor Pozzolanic reaction -
dc.subject.keywordAuthor Cement hydration -
dc.relation.journalWebOfScienceCategory Construction & Building Technology -
dc.relation.journalWebOfScienceCategory Materials Science, Composites -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.relation.journalResearchArea Construction & Building Technology -
dc.relation.journalResearchArea Materials Science -
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Coastal & Ocean Engineering Division > Coastal Development and Ocean Energy Research Center > 1. Journal Articles
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