The need of high strength concrete (H. S. C.) is increasing in the recent
years. This material becomes necessary, but it is brittle .So, metallic
fibers are used to enhance composite properties of (H. S. C.).The
enhanced properties include tensile strength, compressive strength,
elastic modulus, crack resistance, crack control, durability, fatigue life,
resistance to impact and abrasion, shrinkage, expansion, thermal
characteristics, and fire resistance of concrete .There is little information
in the available literature about the bond characteristics for the different
forms of rib geometry of the deformed bars on the strength between steel
and high-strength fiber-reinforced concrete for different relative rib
areas and fibers types .
The main objective of this research is to study the effect of using Metallic
and Non Metallic- Fiber and rib geometry of steel bars on bond strength
for high strength concrete (H. S. C.). Also Pattern of cracks, final mode
of failure and deformational characteristics (direct slip for pull-out)
were investigated.