Flexural strength of basalt fibre reinforced recycled aggregate concrete

This article presents the flexural behaviour of basalt fibre reinforced recycle aggregate concrete. The natural aggregate is replaced by the recycle aggregate in the proportion of 0,25,50,75 and 100%. The basalt fibres used for the concrete with dosage of 4kg/m3. Total ten mixes are taken for experimental work among them, 5 mixes with basalt fibres and other 5 mixes without basalt fibres. In addition to flexure, cube and split tensile strengths are evaluated for concrete mixes. For obtained flexural strength results, regression models are developed to estimate the flexural strength as function of cube compressive strength and % of basalt fibres. The results showed that the flexure strength is increased up to 50% RAC and for later replacements (75 and 100%) the flexural strengths are decreased. By adding the basalt fibres for various mixes, the strengths are increased and more effectiveness observed for 50% RAC.