The Pozzolanic reaction of silica fume

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    Abstract

    Silica fume is a very important supplementary cementitious binder in High-Performance and Ultra High-Performance Concretes. Through its pozzolanic reaction the silica fume densifies the concrete micro-structure, in particular it strengthens the paste-aggregate interfacial transition zone. In the present paper different aspects of the pozzolanic reaction of silica fume are investigated. These include chemical shrinkage, isothermal heat development and strength development. Key data for these are given and compared with theoretical calculations, and based on presented measurements the energy of activation of the pozzolanic reaction of silica fume is estimated. The results show that the pozzolanic reaction of silica fume has notable differences from Portland cement hydration.
    Original languageEnglish
    Title of host publicationMRS Proceedings
    Number of pages12
    Volume1488
    PublisherMaterials Research Society
    Publication date2012
    DOIs
    Publication statusPublished - 2012
    EventXXI International Materials Research Congress 2012 - Cancún, Mexico
    Duration: 12 Aug 201217 Aug 2012
    Conference number: 21
    http://www.mrs.org/imrc2012/

    Conference

    ConferenceXXI International Materials Research Congress 2012
    Number21
    Country/TerritoryMexico
    CityCancún
    Period12/08/201217/08/2012
    Internet address

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