University of Oulu

Perumal, Priyadharshini; Luukkonen, Tero; Kinnunen, Päivö; Illikainen, Mirja (2019) Ultra-high performance concrete with one-part alkali-activated slag. In : Ball, R., Dams, B., Ferrandiz-Mas, V., Ke, X., Paine, K., Tyrer, M., & Walker, P. (Eds.) (2019). 39th Cement and Concrete Science Conference 2019. Bath, UK : University of Bath. Article nro 024. https://researchportal.bath.ac.uk/en/publications/39th-cement-and-concrete-science-conference-2019

Ultra-high performance concrete with one-part alkali-activated slag

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Author: Perumal, Priyadharshini1; Luukkonen, Tero1; Kinnunen, Päivö1;
Organizations: 1Fibre and Particle Engineering Research Unit, University of Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 0.9 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2019111237738
Language: English
Published: University of Bath, 2019
Publish Date: 2019-11-12
Description:

Abstract

One-part (just-add-water) alkali activated binders are of interest due to their ease in practical applications, particularly in on-site works. This paper focuses on a method to develop ultra-high performance one-part alkali activated concrete using particle packing technology. Modified Andreassen particle packing model is employed to optimize the binder and aggregate content that results in a denser matrix. Two different q-parameter values are used in designing the mixes to evaluate its influence in properties like flowability and compressive strength. Lower q-value leads to higher binder content i.e., it moves towards the finer gradation of particles. Mixes with higher fines content show better workability with high flow percentages measured by the spread table (>120% flow). Variation in water-to-binder ratio (0.25–0.35) affects the flow and compressive strength of alkali activated concrete irrespective of q value used in the design. Compressive strengths over 120 MPa is achieved after 28-day curing. The concept of ultra-high performance concrete with particle packing technology is well established by concrete technologists. However, its application in geopolymer concrete, in specific to one-part alkali activated materials is explored for the first time in this work.

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ISBN Print: 978-0-86197-201-2
Article number: 024
Host publication: 39th Cement and Concrete Science Conference 2019. 9 th – 10th September 2019 University of Bath, Bath, UK
Host publication editor: Ball, Richard J
Dams, Barrie
Ferrandiz-Mas, Veronica
Ke, Xinyuan
Paine, Kevin
Tyrer, Mark
Walker, Peter
Conference: Cement and Concrete Science Conference
Type of Publication: A4 Article in conference proceedings
Field of Science: 116 Chemical sciences
212 Civil and construction engineering
215 Chemical engineering
216 Materials engineering
Subjects:
Copyright information: © 2019 The Authors.