ppt presentation on use of FRP rebars in beams

1. RV College of
Engineering
Go, change the world
Department of Civil Engineering
EXPERIENTIAL LEARNING PRESENTATION
Course: DDRCC(21CV52)
Topic :USE OF FRP REBARS IN BEAM
Submitted To :
DR. Praveen Kumar P
DEPT. CIVIL ENGINEERING
RVCE
Submitted By :
Ranjan G m (1RV22CV408)

2. Introduction to FRP Rebars
• FRP (Fiber Reinforced Polymer) rebars are a modern alternative to
traditional steel rebars in beams. They offer increased durability and
corrosion resistance due to their non-metallic composition.
• Rebars in beams marks a significant advancement in structural engineering
technology. FRP rebars, composed of high-strength fibers embedded in a
polymer matrix, offer a compelling alternative to traditional steel
reinforcement in concrete beams.

3. TYPES OF FRP REBARS

4. TYPES OF FRP REBARS
• Glass Fiber Reinforced Polymer (GFRP) rebars: These rebars are made from glass
fibers embedded in a polymer resin matrix. GFRP rebars offer high tensile strength,
corrosion resistance, and compatibility with concrete. They are commonly used in
bridge decks, marine structures, and other environments where corrosion is a
concern.
• Carbon Fiber Reinforced Polymer (CFRP) rebars: CFRP rebars consist of carbon
fibers embedded in a polymer matrix. They have exceptionally high tensile strength
and stiffness, making them suitable for applications requiring high-performance
reinforcement, such as high-rise buildings, industrial structures, and seismic
retrofitting projects

5. TYPES OF FRP REBARS
• Basalt Fiber Reinforced Polymer (BFRP) rebars: BFRP rebars are composed of
basalt fibers embedded in a polymer matrix. They offer similar properties to GFRP
rebars but with higher temperature resistance. BFRP rebars are often used in
applications where elevated temperatures or fire resistance are considerations.
• Aramid Fiber Reinforced Polymer (AFRP) rebars: AFRP rebars are made from
aramid fibers, which offer high tensile strength and excellent resistance to impact
and fatigue. They are typically used in applications requiring lightweight
reinforcement, such as pedestrian bridges, decks, and facades.

6. Design Considerations for FRP Rebars in Beams
• Flexibility
Design should consider the flexibility of FRP rebars required to accommodate the
specific load and movement conditions of the beams.
• Bonding
Proper bonding of FRP rebars with the surrounding concrete structure is crucial for
effective load transfer.
• Shear and Torsion
Special attention should be given to the reinforcement requirements for shear and
torsion to ensure structural integrity.

7. Installation Process of FRP Rebars in Beams
• Surface Preparation
Proper cleaning and roughening of the beam surface to ensure good bonding with
the FRP rebars.
• Rebar Placement
Accurate placement of FRP rebars in the beam according to the structural design
and load requirements.
• Concrete Pouring
Pouring of the concrete to ensure complete encapsulation of the FRP rebars,
preventing exposure to external elements.

8. Comparison with Reinforced Concrete Beams
Feature FRP Beam
Reinforced Concrete
Beam
Corrosion resistance Excellent
Susceptible to rust and
corrosion
Weight Lighter Heavier
Tensile strength Potentially higher Lower
Ductility Lower (brittle) Higher (more ductile)
Cost Generally higher Lower
Design complexity
Requires special
considerations Standard design practices

9. Aspect FRP Beam Steel-Reinforced Beam
Stiffness Lower Higher
Deflection Larger Smaller
Cracking Wider cracks Narrower cracks
Failure mode Brittle Ductile
Shear resistance May require additional measures Generally adequate
Bond with concrete Weaker Stronger
Fatigue performance Potentially lower Higher

10. FRP (Fiber-Reinforced Polymer) rebars exhibit distinct behavioral
characteristics compared to traditionally used steel-reinforced beams.
• Flexural Behavior
Lower stiffness
Cracking
Failure mode
• Shear Behavior
Shear resistance
• Other factors:
Bond between FRP and concrete
Fatigue performance

11. Advantages of FRP Rebars in Beams
• Corrosion Resistance
• High Strength-to-Weight Ratio
• Non-Magnetic
• Electrical Insulation
• Thermal Insulation
• Reduced Maintenance Costs
• Easy to Handle and Instal

12. Conclusion and Future Prospects ofFRP
Rebars in Beam Construction
• Construction advancement in FRP technology are expanding the
possibilities for more cost-effective and sustainable beam
reinforcement solutions.
• FRP rebars are gaining traction globally, with increasing awareness of
their benefits for enhancing beam durability and performance

13. THANK YOU