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dc.contributor.authorNematollahi, B.
dc.contributor.authorSanjayan, J.
dc.contributor.authorShaikh, Faiz
dc.date.accessioned2017-01-30T14:09:54Z
dc.date.available2017-01-30T14:09:54Z
dc.date.created2015-07-16T06:21:59Z
dc.date.issued2015
dc.identifier.citationNematollahi, B. and Sanjayan, J. and Shaikh, F. 2015. Strain Hardening Behavior of Engineered Geopolymer Composites: Effects of the Activator Combination. Journal of the Australian Ceramic Society. 51 (1): pp. 54-60.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/37933
dc.description.abstract

Fly ash-based engineered geopolymer composites (EGCs) exhibiting strain hardening behavior under uni-axial tension were developed employing two different sodium-based (Na-based) and potassium-based (K-based) activator combinations. The relatively brittle low calcium (Class F) fly ash-based geopolymer matrix was reinforced with randomly oriented short poly vinyl alcohol (PVA) fibers (2% v/v). Na-based activator combination was composed of 8.0 M NaOH solution (28.6% w/w) and Na2SiO3 solution (71.4% w/w) with a SiO2/Na2O ratio of 2.0; whereas, Kbased activator combination was composed of 8.0 M KOH solution (28.6% w/w) and K2SiO3 solution (71.4% w/w) with a SiO2/K2O ratio of 2.23. The matrix and composite properties of the developed fly ash-based EGCs including workability of the fresh matrix, density, compressive strength and uni-axial tensile behavior were evaluated. The experimental results revealed that the sodium-based EGC (EGC-Na) exhibited superior tensile strain capacity, compressive and uni-axial tensile strengths with significantly enhanced ductility.

dc.publisherAustralian Ceramic Society
dc.titleStrain Hardening Behavior of Engineered Geopolymer Composites: Effects of the Activator Combination
dc.typeJournal Article
dcterms.source.volume51
dcterms.source.number1
dcterms.source.startPage54
dcterms.source.endPage60
dcterms.source.issn0004-881X
dcterms.source.titleJournal of the Australian Ceramic Society
curtin.departmentDepartment of Civil Engineering
curtin.accessStatusOpen access
curtin.facultyFaculty of Science and Engineering


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