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Strength Development and Water Permeability of Hybrid Steel Fibre Reinforced Concrete
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Abstract
The paper presents results of an investigation conducted to study the compressive strength, split tensile strength and water permeability of Hybrid Steel Fibre Reinforced Concrete (HySFRC). Steel fibres of different lengths i.e. 12.5 mm, 25 mm and 50 mm having constant diameter of 0.6 mm were systematically combined in different mix proportions to obtain binary and ternary combinations. Mixes with no fibres and containing mono steel fibres were also cast for comparison purpose. The total fibre volume fraction was kept at 0.5%. A total number of 504 cube specimens of size 100 x 100 x 100 mm were tested for compressive strength, split tensile strength and water permeability. It has been observed that a fibre combination of 33% 12.5 mm + 33% 25 mm + 33% 50 mm long fibres can be adjudged as the most appropriate combination to be employed in HySFRC for compressive strength, split tensile strength and water permeability
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