Non-Linear Analysis of Hybrid Reinforced T-Beam with Partial Substitution Recycled Rubberized Concrete

Abstract

At present, the need to make use of industrial waste materials is increasing due to their harmful effects on the environment. In the present work, the behavior of hybrid reinforced T-Beam by steel, and CFRP with rubber is studied. The finite element modeling by using ANSYS version 15 program. It contains also all the required steps needed to create the concrete models that were prepared to study the behavior of beams with rubber concrete. The reinforcement of beams was various combinations of polymer CFRP and steel bars. The crumb rubberized concrete mixes were prepared by partial substitution (5 %, 10 %, 15 %, 17.5 %, 20 %, 22.5 %, and 25 % replacements by volume). Due to the large number of parameters affecting the behavior of Hybrid Reinforced T- Beam with rubber concrete, an extensive parametric study was performed using ANSYS version 15 program. Three parameters were investigated namely: Bottom RFT, compressive strength of concrete, and the existence of opening. The analytical results agree well with the experimental results in terms of mode of failure and the failure load values. The results indicated that although the flexural capacity of the tested specimen decreased with the addition of Crumb Rubber and reduced its self-weight. The failure load of the beam increases with bottom reinforcement by the GFRP bar or CFRP bar. Also, reinforced beams by CFRP bars had a higher failure load than reinforced beams by GFRP bars. Having an opening in hybrid reinforced T-Beam with rubber concrete reduced the beam load capacity and maximum deflection. Also, using GFRP bars, and CFRP bars in the vicinity of openings in hybrid reinforced T-Beams increased the load capacity of these beams.

Keywords

• cfrp bars
• t-beams
• crumb rubber
• finite element method
• hybrid beams