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
CountryMexico
CityCancún
Period12/08/201217/08/2012
Internet address

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