Show simple item record

dc.contributor.authorShaikh, Faiz
dc.date.accessioned2018-12-13T09:14:25Z
dc.date.available2018-12-13T09:14:25Z
dc.date.created2018-12-12T02:46:40Z
dc.date.issued2018
dc.identifier.citationShaikh, F. 2018. Effects of slag content on the residual mechanical properties of ambient air-cured geopolymers exposed to elevated temperatures. Journal of Asian Ceramic Societies. 6 (4): pp. 342-358.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/72766
dc.identifier.doi10.1080/21870764.2018.1529013
dc.description.abstract

This paper presents the effects of various slag contents on the residual compressive strength and physical properties of ambient air-cured fly ash-slag blended geopolymers after exposure to various elevated temperatures up to 800°C. The results showed an increasing trend in the compressive strength of ambient air-cured geopolymers with increase in the slag contents after exposure to 400 and 600°C temperatures. This trend deviated, however, at 800°C. Nevertheless, all the geopolymers showed reductions in control compressive strength at ambient temperature after exposure to elevated temperatures. The reductions were much higher at 600 and 800°C compared to 400°C. All the geopolymers exhibited significant damage in terms of cracking after exposure to a temperature of 800°C compared to 400 and 600°C and significant damage occurred at slag contents of 15–30%. Scanning electron microscopic (SEM) images of the above geopolymers also showed higher porosity at 800°C compared to 400 and 600°C. Traces of calcite/calcium silicate hydrate (CSH) peaks are observed in the X-ray diffraction (XRD) analysis of fly ash-slag geopolymers, and the intensity of those peaks increased with increases in slag contents. After exposure to elevated temperatures, the calcite/CSH peaks disappeared and new phases of nepheline and gehlenite were formed at 800°C in all the fly ash-slag geopolymers.

dc.publisherTaylor & Francis
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titleEffects of slag content on the residual mechanical properties of ambient air-cured geopolymers exposed to elevated temperatures
dc.typeJournal Article
dcterms.source.issn2187-0764
dcterms.source.titleJournal of Asian Ceramic Societies
curtin.departmentSchool of Civil and Mechanical Engineering (CME)
curtin.accessStatusOpen access


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

http://creativecommons.org/licenses/by/4.0/
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by/4.0/