STUDY ON THE MECHANICAL PROPERTIES AND FRACTURE BEHAVIOR OF CHOPPED STEEL FIBER REINFORCED SELF COMPACTING CONCRETE

Biswajit Jena, Bipin Bihari Mohanty

Abstract: Fiber reinforced concrete (FRC) is widely practiced with high ductility and sufficient durability. In this study, the properties of the volume fraction and length of steelfiber (SF) on the mechanical properties of FRC were analyzed. This paper provides result data of the compressive strength, and split tensile strength, flexural strength of steel fiber reinforced concrete. The variables in this study the percentage of volume fraction (0, 1.0, 1.5, 2, 2.5 & 3) of steel fibersby weight of total weight of concrete. For compression test, a result data obtained has been analyzed and related with a control specimen (0% fiber). A relationship between Compressive strength vs. fiber volume fraction and tensile strength vs. fiber volume fraction & flexural strength vs. fiber volume fraction of steel fiber are represented graphically. The addition of fiber enhanced the ductility significantly. Result data clearly shows a small increase in compressive strength for M30 Grade of concrete due to addition of 0.1% steel fiber, but for 0.2% addition a marginally increase in strength after that the strength is decreased.

Keywords: self-compacting concrete, steel fiber, mechanical properties, volume fraction, fracture energy

DOI: https://doi.org/10.15623/ijret.2015.0412032