Rheological characteristics of self-compacting concrete mixtures containing metakaolin, ground granulated blast-furnace slag and fly ash

Sina Dadsetan, J. Bai

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

Abstract

Supplementary cementitious materials (SCMs) have been recently used in self-compacting concrete (SCC) in order to make it cost effective, better performance and also reduce the overall greenhouse gas emissions associated with the production of concrete. In this study, the rheological properties of 18 SCC mixtures with various SCMs were investigated for a constant slump flow value. In order to achieve this, Portland Cement (PC) as the main binder were replaced by various percentage of Metakaolin (MK), Ground Granulated Blast-furnace Slag (GGBS) and Fly Ash (FA) in two water/binder ratios. Results showed that MK increased high range water reducing admixture (HRWRA) demand and decreased rheological aspects due to the finer particles and also higher amount of aluminium. However the opposite tendency was observed when FA was incorporated with PC as the spherical fly ash particles makes it easier for the SCC mix to flow. Moreover, substitution of PC with GGBS increased HRWRA required in the SCC mixture having constant slump flow but no change on the other rheological properties. Scanning Electron Microscopy (SEM) and Energy dispersive X-ray spectroscopy (EDS) were used to understand the microstructural properties of SCMs.
Original languageEnglish
Title of host publicationProceedings of the Fourth International Conference on Sustainable Construction Materials and Technologies
Subtitle of host publicationVolume 1, Las Vegas, Nevada, USA
EditorsNader Ghafoori, Peter Claisse, Eshmaiel Ganjian
PublisherCreateSpace Independent Publishing Platform
Number of pages11
Volume1
ISBN (Print)978-1543111583
DOIs
Publication statusPublished - 2016
EventFourth International Conference on Sustainable Construction Materials and Technologies - University of Nevada, Las Vegas, United States
Duration: 7 Aug 201611 Aug 2016
Conference number: 4th

Publication series

NameSustainable Construction Materials and Technologies

Conference

ConferenceFourth International Conference on Sustainable Construction Materials and Technologies
Abbreviated titleSCMT4
Country/TerritoryUnited States
CityLas Vegas
Period7/08/1611/08/16

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