IMPACT RESISTANCE OF STEEL FIBER REINFORCED CONCRETE

P. B. Murnal, R. N. Chatorikar

Abstract: The present experimental investigation is to study the impact resistance of Fiber Reinforced Concrete with inclusion of steel fibers. The concrete composites comprises of steel fibers in different percentages. The hooked end type steel fibers varied from 0 to 2.5% at an interval of 0.5% by weight of cement. A simple economical and practical drop weight impact testing machine was used to determine the impact resistance for Steel Fiber Reinforced concrete [SFRC]. Impact test were carried out on SFRC with aspect ratio (l/d) as 60. The specimens were tested at 7 days and 28 days strength for concrete grade category like M20, M30 and M40. The specimens for impact studies were tested by drop weight Impact test method which was recommended by ACI-544 committee. The addition of steel fibers to concrete has improved the impact resistance considerably. The test results showed the variation of impact energy strength with different volume fraction of fibers.

Keywords: SFRC, impact energy, hooked end type steel fibers, drop weight impact testing apparatus, etc

DOI: https://doi.org/10.15623/ijret.2015.0425034