Fibre reinforced geopolymer concrete with ambient curing for in-situ applications

Reed, Mark and Lokuge, Weena and Karunasena, Warna (2014) Fibre reinforced geopolymer concrete with ambient curing for in-situ applications. Journal of Materials Science, 49 (12). pp. 4297-4304. ISSN 0022-2461

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Abstract

Geopolymer concrete is proven to have excellent engineering properties with a reduced carbon footprint. It not only reduces the greenhouse gas emissions (compared to Portland cement based concrete) but also utilises a large amount of industrial waste materials such as fly ash and slag. Due to these positive attributes, it is becoming an increasingly popular construction material. Previous studies on geopolymer concrete report that heat curing plays an important role in gaining higher compressive strength values (as opposed to ambient curing) and hence the application of this material could be limited to precast members. Therefore, this research was aimed at investigating the effect of heat curing by comparing the mechanical properties such as compressive strength and ductility of ambient cured and heat cured geopolymer concrete samples. It is worth noting that there was marginal strength change due to heat curing.
In Australia fibre-reinforced geopolymer concrete is being used in precast panels in underground constructions. Commercially available geopolymer cement and synthetic fibres are effectively being used to produce elements that are more durable than what is currently used in industry. As a result, this research investigated the effects of polypropylene fibres in geopolymer concrete using 0.05% and 0.15% fibres (by weight). The addition of polypropylene fibres enhances the compressive strength and the ductility of geopolymer concrete.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published Version restricted in accordance with publisher copyright restrictions (Springer)
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 14 Aug 2014 07:41
Last Modified: 04 Jul 2016 06:34
Uncontrolled Keywords: geopolymer concrete; compressive strength; ductility; fibre; structural performance; ambient curing
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091299 Materials Engineering not elsewhere classified
09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1007/s10853-014-8125-3
URI: http://eprints.usq.edu.au/id/eprint/25766

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