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The influence of mineral admixtures on rheology of superplasticized fresh mortars

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The influence of fly ash, ground granulated blast furnace slag, and condensed silica fume on rheological properties of mortars with different cements and different new generation superplasticizers are presented and discussed. Rheological properties of these mortars were studied using Two-point workability test and these mortars can be considered as a model of concrete. The addition of mineral admixtures significantly influences rheological properties of mortars and the nature and range of this influence depend not only on the type, properties and content of mineral admixture but also on the properties of the cement and superplasticizer and interaction of these. The basic influence trends of mineral admixtures on rheology of mortars with polycarboxylate and polyeter superplasticizers are presented. It is concluded that the compatibility of cement and superplasticizer system should be selected taking into account presence and estimated dosage of given mineral admixture. The combined influence of given cement - mineral admixture - superplasticizer system on rheology of fresh concrete should be verified by means of experimentation. Two-point workability test made on mortars enables both selection of optimal cement - mineral admixture - superplasticizer system and collection of data for fresh concrete workability control.

Original languageEnglish
Title of host publication9th CanMET/ACI Fly Ash Conference
EditorsV.M. Malhotra
PublisherAmerican Concrete Institute
Pages375-390
Number of pages16
ISBN (Electronic)9780870312410
Publication statusPublished - 1 Apr 2007
Event9th CANMET/ACI International Conference on Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete - Warsaw, Poland
Duration: 20 May 200725 May 2007

Publication series

NameAmerican Concrete Institute, ACI Special Publication
VolumeSP-242
ISSN (Print)0193-2527

Conference

Conference9th CANMET/ACI International Conference on Fly Ash, Silica Fume, Slag, and Natural Pozzolans in Concrete
Country/TerritoryPoland
CityWarsaw
Period20/05/0725/05/07

Keywords

  • Cement
  • Mineral admixture
  • Mortar
  • Rheology
  • Superplasticizer

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • General Materials Science

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