University of Oulu

Rissanen, J., Ohenoja, K., Kinnunen, P., Illikainen, M. (2017) Partial Replacement of Portland-Composite Cement by Fluidized Bed Combustion Fly Ash. Journal of materials in civil engineering, 29 (8), 04017061. doi:10.1061/(ASCE)MT.1943-5533.0001899

Partial replacement of Portland-composite cement by fluidized bed combustion fly ash

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Author: Rissanen, Jouni1; Katja, Ohenoja1; Kinnunen, Päivö1;
Organizations: 1Fibre and Particle Engineering, Faculty of Technology, PO Box 4300, 90014, University of Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 2.8 MB)
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Language: English
Published: American Society of Civil Engineers, 2017
Publish Date: 2019-12-18


Fly ash from fluidized bed combustion differs greatly from that of pulverized coal firing. The most noticeable differences are in morphology, reactivity, and chemical composition. The use of biomass fly ash from fluidized bed combustion as a cement replacement material could be a promising method for both minimizing the amount of landfilled fly ash and reducing CO2 emissions in the concrete and cement industry. In this study, fly ash from fluidized bed combustion of peat and forest industry residue was used as a supplementary cementitious material for portland-composite cement (CEM II) containing clinker, blast furnace slag, and limestone. Even with a 40% cement replacement ratio, the compressive strengths of the mortar samples were still as high as 88% of the control sample’s strength. Comparison with unreactive replacement material revealed that moderate hydraulic properties of the studied fly ash explained the positive effects on strength rather than filler or nucleation effects.

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Series: Journal of materials in civil engineering
ISSN: 0899-1561
ISSN-E: 1943-5533
ISSN-L: 0899-1561
Volume: 29
Issue: 8
Article number: 04017061
DOI: 10.1061/(ASCE)MT.1943-5533.0001899
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
215 Chemical engineering
Funding: This work was done under the auspices of the “MINSI” project, which is supported by The European Regional Development Fund (ERDF), and various companies including Ekokem, Pohjolan Voima, Oulun Energia, SSAB, and Stora Enso.
Copyright information: © 2017 American Society of Civil Engineers. This is an Accepted Manuscript of an article published by American Society of Civil Engineers in Journal of materials in civil engineering, available online: