Evaluation of short- and longterm properties of heat-cured alkali-activated fly ash concrete

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dc.contributor.author Shekhovtsova, Julia
dc.contributor.author Kovtun, Maxim
dc.contributor.author Kearsley, Elsabe P.
dc.date.accessioned 2015-10-05T06:39:52Z
dc.date.issued 2015-08
dc.description.abstract Short and long-term properties of alkali-activated fly ash concrete namely compressive, flexural and splitting tensile strengths, modulus of elasticity, Poisson’s ratio, early age and drying shrinkage, creep, and durability performance have been investigated in this paper. Blended ordinary Portland cement-fly ash concrete was used as a reference. The average compressive and flexural strength of alkali-activated fly ash concrete at 28 days was 45 MPa and 5.8 MPa respectively; drying shrinkage and creep values were about 360 and 200 microstrain respectively at one year. The total early age shrinkage during the first 24 hours of curing was lower for alkali-activated fly ash concrete of 1460 microstrain compared to 2800 microstrain for blended cement concrete. The using of this non- Portland cement containing material for producing precast concrete units can utilize high volumes of fly ash and potentially reduce the carbon footprint of the final product. en_ZA
dc.description.embargo 2016-08-31
dc.description.librarian hb2015 en_ZA
dc.description.uri http://www.icevirtuallibrary.com/content/serial/macr en_ZA
dc.identifier.citation Shekhovtsova, J, Kearsley, EP & Kovtun, M 2015, 'Evaluation of short- and longterm properties of heat-cured alkali-activated fly ash concrete', Magazine of Concrete Research, vol. 67, no. 16, pp. 897-905. en_ZA
dc.identifier.issn 0024-9831 (print)
dc.identifier.issn 1751-763X (online)
dc.identifier.other 10.1680/macr.14.00377
dc.identifier.uri http://hdl.handle.net/2263/50152
dc.language.iso en en_ZA
dc.publisher Thomas Telford en_ZA
dc.rights © ICE Publishing, all rights reserved. en_ZA
dc.subject Materials technology en_ZA
dc.subject Strength and testing of materials en_ZA
dc.subject Concrete technology en_ZA
dc.subject Concrete manufacture en_ZA
dc.title Evaluation of short- and longterm properties of heat-cured alkali-activated fly ash concrete en_ZA
dc.type Postprint Article en_ZA


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