Authors : Rafea Flaih Hassan, Muna H. Jaber Nabeel and Hasan Ali Al-Salim
Abstract: Using deferent number of fibre reinforcement nets near to surface of Reinforcement Concrete (RC) beams was studied experimentally in this research. In addition to discuss the effect of the conic voids that added inside RC beam as a 10% of a tested beam volume. The total sample number was six reinforced concrete beams with these specific dimensions 0.1×20.18×1.22 m which tested under two points load. And to strengthen the beams two methods of applying the fibre net were used: the first one was used four separate layers of net around the beam section (one for each beam side) while the second method used five layers of net around the beam section (one for each beam side) and added another layer of net in the beam base to be two layers. Whereas the tests results indicated an increasing in the strength about 5.8 and 27.7% for solid beam after adding one and two layers of fibre nets in beams base as a near surface reinforcement for RC beams, respectively while the increasing about 12.5-45% for the voided beam after adding one and two layers of fibre nets in beams base as a near surface reinforcement for RC beams, respectively. Thus, using two layers of fibre nets in the base of beam changed failure criteria of beams from flexural failure to shear failure in both cases of solid and voided beam.
Rafea Flaih Hassan, Muna H. Jaber Nabeel and Hasan Ali Al-Salim, 2018. Influence of Near Surface Fiber Nets Reinforcement on the Behavior of Solid and Voided Reinforced Concrete Beams. Journal of Engineering and Applied Sciences, 13: 7612-7617.