PropertyValue
?:abstract
  • In this paper, C3A-gypsum and C3A-C3S-gypsum model cement systems with and without nanosilica were studied The effects of nanosilica on the early stage cement hydration, particularly C3A hydration, were assessed through the heat of hydration (isothermal calorimetry), phase assemblage (QXRD), zeta potential, ion concentration measurements and morphology (SEM) examinations The results indicate that while promoting C3S hydration, nanosilica retarded C3A hydration in both the systems studied The retardation was caused by the adsorption and coverage of nanosilica on C3A surfaces through the electrostatic interaction, thus decreasing the C3A dissolution rate and hindering the precipitation of hydration products Consequently, the reduced gypsum consumption rate and the seeding effect of nanosilica further promoted C3S hydration These findings suggest that nanosilica and other silica-based nanoparticles can physiochemically influence hydration of cement-based materials, and a better understanding of these influencing mechanisms can help optimize performances of nanoparticle modified cement-based materials
is ?:annotates of
?:journal
  • Journal_of_the_American_Ceramic_Society
?:license
  • unk
?:publication_isRelatedTo_Disease
?:source
  • WHO
?:title
  • Physicochemical effects of nanosilica on C3A/C3S hydration
?:type
?:who_covidence_id
  • #670593
?:year
  • 2020

Metadata

Anon_0  
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://purl.org/net/provenance/ns#DataItem>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2004/03/trix/rdfg-1/Graph>
<http://xmlns.com/foaf/0.1/primaryTopic> <https://research.tib.eu/covid-19/entity/i88bd9bd>
<http://xmlns.com/foaf/0.1/topic> Anon_0
<http://www.ontologydesignpatterns.org/cp/owl/informationrealization.owl#realizes> <https://research.tib.eu/covid-19/data/entity/i88bd9bd>
<http://purl.org/net/provenance/ns#createdBy>
Anon_1   (more)
expand all