A mixture proportioning method for the development of performance-based alkali-activated slag-based concrete

Li, Ning and Shi, Caijun and Zhang, Zuhua and Zhu, Deju and Hwang, Hyeon-Jong and Zhu, Yuhan and Sun, Tengjiao (2018) A mixture proportioning method for the development of performance-based alkali-activated slag-based concrete. Cement and Concrete Composites, 93. pp. 163-174. ISSN 0958-9465

Abstract

This paper reports a general mixture design procedure for alkali-activated slag concrete, which is an essential step towards industrial application. The procedure involves three steps: 1) the determination of coarse and fine aggregate ratio according to close packing model; 2) the determination of liquid phase (water content and activator) based on compressive strength; and 3) the determination of excess paste content by workability requirement and measurement. Effects of mixture proportional factors, including activator composition, water content, fly ash content, and binder/aggregate ratio are examined on consistency, setting time and compressive strength. The relationship between performance and precursor composition is established using simplex centroid design method. Using the mixture proportioning method, alkali-activated concretes with compressive strength grades of C40, C60, and C80 are successfully prepared with initial setting time of 1–3 h and slump of more than 200 mm.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials
Date Deposited: 03 Feb 2019 23:48
Last Modified: 05 Feb 2019 02:03
Uncontrolled Keywords: alkali-activated concrete; proportional design; simplex centroid design method; slump; setting time; compressive strength
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Funding Details:
Identification Number or DOI: 10.1016/j.cemconcomp.2018.07.009
URI: http://eprints.usq.edu.au/id/eprint/35287

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