The Effect of Steel Fiber Content on The Splitting Tensile Strength of Steel Fiber Reinforced Concrete (SFRC)

Abstract

Concrete is a composite material consisting of two main components namely
aggregate and cement mortar as a binder. Concrete has high compressive strength
but weak tensile strength. The addition of fiber in concrete can improve ductile
behavior before collapse, inhibit the growth of crack expansion and increase
durability. This study aims to examine the effect of fiber content on the
mechanical properties of fiber concrete. The fibers used were ssteel fibers with
hooked end, and l/d ratio = 67,7 mm with normal concrete quality f’c = 25 MPa.
The percentage of fiber content used in this study was 0%, 0,1%, 0,2%, 0,3%,
0,5%, 0,75%, 1%, 1,5% and 2%. The results showed that the addition of fiber in
concrete was able to increase the split tensile strength by 7 – 117%. Fiber concrete
has higher ductility than normal concrete. This is indicated by the high deflection
of fiber concrete compared to the deflection of normal concrete under load.