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ISSN 2063-5346
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Experimental Investigation on the Mechanical Properties of Hooked End Steel Fibre Reinforced Geopolymer Concrete

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P. Radha1, C. Anbalagan2
» doi: 10.48047/ecb/2023.12.5.026

Abstract

This research investigated to see how the addition of hooked end steel fibers to geopolymer concrete influenced its mechanical properties like compressive, splitting tensile, and flexural strength. The volume percent of steel fibers on grinding introduced to the geopolymer concrete varied from 0% to 3%. The geopolymer precursors comprises of fly ash and metakaolin. The results revealed that when the steel fibers were added to the geopolymer concrete at its optimum level, it significantly improved all of the mechanical properties. Cubic compressive strength, was improved when the steel fiber percentage was less than 2%. The cubic compressive strength improved by 7.34, 10.37, 13.64, 19.34%, upto 2% of hooked end steel fibers were added. The compressive strength reduced at the rate of 2.4% and 4% when the steel fiber content exceeded 2%, but still remained higher than those of geopolymer concrete without steel fibers. Incorporating steel fibers into GPSF specimens marginally improved its flexural strength and splitting tensile strength. There was a 27.97% increase in splitting tensile strength and a 129.8% increase in flexural strength when steelfiber content of 2.5% was added.

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