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Experimental investigation reveals strength benefits of steel fibres in concrete at various volumes.
This study was aimed at investigating the structural behaviour of steel fibre reinforced concrete at different volume fraction of the fibers. The experimental work was done to test the concrete specimens under compression and flexure. Concrete cubes and beam specimens were used for the production of all samples using a mix ratio of 1:1½:3 and water/cement ratio of 0.5. The compressive strength and flexural tests were conducted using the compression test machine for the concrete samples of different volume of steel fibres at 7, 14, 21 and 28 days to determine the strength properties of the various concrete specimens. It was observed that the highest compressive strength was at 28 days and was achieved at 2.0% SFRC with a strength value of 34.25N/mm2 greater than the control value of 27.40 N/mm2 while the highest flexural strength at 28 days was 10.24 N/mm2 at SFRC 3.0%. Therefore, the use of 2.0% of steel fibers by the volume of concrete was considered to be satisfactory.
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David et al. (2026) studied this question.
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