1. Presented To: Dr. Ashutosh Bagchi
Internal Applications of Fiber Reinforced Polymer
(FRP Bars)
Presented By
Junaid Rafiq
ID:
Presented To: Dr. Ashutosh Bagchi
Concordia University

2. OUTLINE: Introduction of Fiber Reinforced Polymer
Application of Fiber Reinforced Polymer
Fiber Reinforced Polymer Bars
Properties of Fiber reinforced polymer
Types of FRP
Case study
Conclusion

3. Introduction Reinforcing Fiber (Glass, Carbon, etc.)
Fiber Reinforced Polymer
Composite material
Fiber Matrix
high strength
and stiffness
Principle load carrying members
Carbon, glass, aramid
Protects and transfers load between fibers
Bonding material
Polyester, Epoxy, Vinyl Ester, Urethane
Polymer Resin Matrix
Reinforcing Fiber
(Glass, Carbon, etc.)

4. Application of Fiber Reinforced Polymer
1940’s - Aircraft industry used GFRP
After few years, marine sector started using FRP
1970’s - Construction sector

5. Application of Fiber Reinforced Polymer
Internal Application
FRP Bars
Used in Beams, columns, bridges, slabs etc
External application
FRP Sheets
Strengthening the existing structure

6. FRP Reinforced Polymer Bars
FRP bars – Fiber and matrix
Mostly circular in shape
Alternative of steel bars
Life span is more than steel bar
Easy handling
Initial cost is high as compared
to steel

7. Properties of FRP Its light weight, ¼ the weight of steel
Corrosion Resistance
High tensile strength, Stronger than steel.
Electrical insulating properties are good.
Level of Stiffness is high.
Chemical resistance
Across a wide range of temperatures, retention of dimensional stability
Long term durability
Low installation and maintenance cost

8. Types of Fibers Reinforced Polymer Bars
Glass Fibers
Low cost
High chemical resistance
High tensile strength
Carbon Fibers
High Strength
light weight

9. FRP Bar Shapes Bends and Hooks a) Ribbed b) Sand Coated
c) Wrapped and Sand Coated
Bends and Hooks
Cannot bent on site.
Produced during Fabrication process.

10. Field Applications of FRP bars
Crowchild Trail Bridge, Calgary, Alberta
Hall’s Harbor Wharf, Nova Scotia
Joffre Bridge, Québec

11. Field Applications of FRP bars
Taylor Bridge, Manitoba
Centre Street Bridge, Calgary, Alberta
Brookside Cemetery, Manitoba
Sherbrooke University Pedestrian Bridge, Quebec

12. Smart FRP-OFBG bars and their application in reinforced concrete beams
Case study
Smart FRP-OFBG bars and their application in reinforced concrete beams
Optical Fiber Brag Grating (OFBG) Sensors
Electro – magnetic resistance
Small size
Durability
Fabrication of
FRP-OFBG bars
OFBG-CFRP bars
OFBG-GFRP bars

13. MICROSTRUCTURE TEST OF FRP - OFBG BARS
SEM of bare FBG and GFRP
SEM of bare FBG and CFRP
scanning electronic mirror Images
OFBG is combined with FRP very well. Therefore FBG can sense the strain of FRP bar.

14. Mechanical test of FRP-OFBG bars (Tensile test)
MPa )
MPa )
Comparison of CFRP-OFBG and CFRP bars under load
Comparison of GFRP-OFBG and GFRP bars
under load
Diameter of FRP bar – 6 mm
Diameter of OFBG is about 2% that of FRP bar
Area of section is about 0.04% that of FRP bar.
OFBGs don't affect the mechanical properties of FRP bars.

15. FRP-OFBG REINFORCED CONCRETE BEAM TESTS
Test design and preparation
Structure specification of FRP concrete beam
FRP-concrete beam under loader and the position of FBGs in FRP

16. Test results: failure modes of concrete beams
Failure mode of CFRP-OFBG beams
Failure mode of GFRP-OFBG beams

17. Test results: failure modes of concrete beams
FRP-OFBG bar strain
Low – Support
Moderate – One third span
High – Mid span
Microstructure of FRP-OFBG bar after beam failure
SEM test (Scanning Electronic Mirror)
OFBG is combined with FRP very well at uncracked interface.
FRP-OFBG bar can monitor the strain of FRP bar until beam failure.

18. Further work on case study
Design Analysis of a simple supported Beam
Steel reinforced beam
Glass Fiber reinforced polymer Beam
Carbon Fiber reinforced Polymer Beam
All the designs will be compared with each other.

19. Conclusion demand in Future construction works.
FRP is an Innovative material which will be in high
demand in Future construction works.
Life span of the structure increases.
Maintenance and repair cost is very low
Long term Durability of the structure.
OFBG don’t affect the mechanical properties of FRP
bars because OFBG diameter is relative thin compared
with FRP bar diameter.
FRP-OFBG bar can serve as both reinforcement and
sensor.

20. Thank You