Paper Title:Experimental Investigation on the Behavior of Steel Fiber and Polypropylene Fiber Reinforced High Strength Concrete

Abstract

In the last few year’s conventional fiber reinforced concrete (RC) has established and it is common practice to use FRC as construction material. FRC offers advantages over plain HSC and reinforced HSC such as in increase of tensile strength and mechanical load carrying capacity and an improvement of ductility and fire resistance as well. Fiber Reinforced Concrete (FRC) offers advantages over plain High Strength Concrete (HSC) and Reinforced High Strength Concrete (HSC) such as in increase of tensile strength and mechanical load carrying capacity and an improvement of ductility and fire resistance as well. One of the important properties of steel fibers reinforced concrete (SFRC) is its superior resistance to cracking and crack propagation. Polypropylene fibers cause mainly on the one hand for increasing ductility behavior and, on the other hand for improving the fire resistance. The present investigation was aimed carried out to determine the Compressive Strength, split tensile strength and also the resistance to cracking by determining the flexural strength of steel fiber (lathe waste) and polypropylene fiber reinforced high strength concrete of M60 grade 0%, 0.5%, 1%, 1.5% and 2% volume fractions of two types of fibers and 5% of cement is replaced by silica fume. Two types of fibers used are steel fibers with aspect ratio 25, 38 and polypropylene fiber with aspect ratio 1600.


Keywords: Compressive Strength, Split Tensile Strength, Flexural Strength, Mix Proportion.