Bearing strength of silica fume concrete with bearing to punching area ratio of 15

This document presents the bearing and compressive strengths of steel fibre reinforced silica fume concrete. To evaluate the strengths standard size cube specimens cast and tested in compression testing machine. Total six mixes were taken for this study, in the mixes the silica fume was used as partial replacement of cement with various proportions of 0, 5, 10, 15, 20 and 25%. In all the mixes the crimpled steel fibres were also added with the dosage of 1 and 2% by volume of specimen. The obtained bearing strength results were compared with the existing codes of IS 456 and ACI 318 cods. Few regression models were deduced to assess the experimental results with precision. The results showed that, the mix with 15% silica fume is optimum and also observed that, the addition of steel fibres for all the mixes are effective to exhibit high bearing strength.