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 language | English |
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Title of host publication | MRS Proceedings |
Number of pages | 12 |
Volume | 1488 |
Publisher | Materials Research Society |
Publication date | 2012 |
DOIs | |
Publication status | Published - 2012 |
Event | XXI International Materials Research Congress 2012 - Cancún, Mexico Duration: 12 Aug 2012 → 17 Aug 2012 Conference number: 21 http://www.mrs.org/imrc2012/ |
Conference
Conference | XXI International Materials Research Congress 2012 |
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Number | 21 |
Country/Territory | Mexico |
City | Cancún |
Period | 12/08/2012 → 17/08/2012 |
Internet address |