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dc.contributor.authorNath, Pradip
dc.contributor.authorSarker, Prabir
dc.contributor.editorYazdani, S.
dc.contributor.editorSingh, A.
dc.identifier.citationNath, Pradip and Sarker, Prabir Kumar. 2013. Fracture properties of geopolymer concrete cured in ambient temperature, in Yazdani, S. and Singh, A. (ed), New Developments in Structural Engineering and Construction, Proceedings of the Seventh International Structural Engineering and Construction Conference, ISEC-7, Jun 18-23 2013, pp. 1061-1066. Manoa, Honolulu: University of Hawaii.

Geopolymer concrete (GPC) is a promising alternative of ordinary Portland cement (OPC) concrete. Recent studies indicate potential benefit of heat cured geopolymer concrete in structural applications. This study aimed at the fracture behavior of fly ash based geopolymer concrete cured in ambient temperature. Geopolymer concretes were prepared with mainly fly ash as the binder which was activated by a mixture of sodium hydroxide and sodium silicate solutions. Ground granulated blast furnace slag (GGBFS) was added up to 20% of total binder and amount of alkaline solution was varied to determine the effect on concretes subjected to ambient curing. Notched beam specimens were cast and cured in air at 16-22 oC and 70 ± 10% relative humidity. Three-point bending test was conducted using a closed-loop universal testing machine. The fracture energy values were calculated from the load-deflection curves of the test specimens by using the work of fracture method. The critical stress intensity factors of the specimens were also calculated. The load-deflection curves and the fracture behavior of different geopolymer concretes were compared. Generally, the fracture energy varied with the strength of the concrete. The fracture energy of concrete having slag in addition to fly ash was higher than that having only fly ash. Geopolymer concretes achieved higher fracture energy values as compared to OPC concrete of similar compressive strength.

dc.publisherResearch Publishing Services
dc.subjectfracture energy
dc.subjectFly ash
dc.subjectgeopolymer concrete
dc.titleFracture properties of geopolymer concrete cured in ambient temperature
dc.typeConference Paper
dcterms.source.titleNew Developments in Structural Engineering and Construction
dcterms.source.seriesNew Developments in Structural Engineering and Construction
dcterms.source.conferenceThe Seventh International Structural Engineering and Construction Conference, ISEC-7
dcterms.source.conference-start-dateJun 18 2013
dcterms.source.conferencelocationHonolulu, USA
dcterms.source.placeHonolulu, USA

Published with permission: Copyright @ 2013 by Research Publishing Services


NOTICE: This is the author’s version of a work in which changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication.

curtin.accessStatusOpen access

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