Fiber reinforced concrete is concrete containing fibrous material which increases its structural integrity. The document discusses the history of fiber reinforcement in construction materials and provides details on different types of fiber reinforced concrete such as steel fiber reinforced concrete and glass fiber reinforced concrete. It describes the mechanical properties of fiber reinforced concrete such as its improved tensile strength, ductility, crack control ability, and failure resistance compared to normal concrete. Recent developments and applications in civil infrastructure are also summarized.

1. INTRODUCING
TO
FIBRE REINFORCED
CONCRETE
PRESENTED BY:
KAMANASISH BHOWMIK
B.E.7TH SEMESTER CIVIL ENGG.
ENROLLMENT NO:0610128

2. Fiber reinforced concrete
 Fiber reinforced concrete (FRC) is
concrete containing fibrous material
which increases its structural integrity.

3. Historical perspective
BC Horse hair.
Egyptians used straw to reinforce
mud bricks.
1900 asbestos fiber was used to reinforce clay
posts.
1960 FRC.
1970 SFRC, GFRC, PPFRC, Shotcrete.
2000+ Structural applications, Code
integration, New products.

4. TYPES OF FIBRE REINFORCED
CONCRETE(FRC)
FR
CONCRETE
GLASS FR
CONCRETE
PLASTIC FR
CONCRETE
STEEL FR
CONCRETE
NYLON FR
CONCRETE
ORGANIC FR
CONCRETE
CARBON FR
CONCRETE

5. GLASS FIBRE REINFORCED
CONCRETE

6. Glass fibre manufactured in the
form of glass fibre sheet as shown
in figure

7. High Zirconia Glass Fibre
Reinforced Concrete (GRC)

8. Alkali Resistant Glass fibre
Reinforced Concrete (GRC)

9. STEEL FIBRE REINFORCED
CONCRETE(SFRC)

11. Compressive Strength Of
SFRC

12. PLASTIC FIBRE REINFORCED
CONCRETE(PFRC)

13. Difference Between
SFRC and PFRC
SFRC
1)Improving durability is the
reason of controlling
crack width.
2)Deflection is lower
compared with PFRC.
3)It can use in any exposure
condition.
PFRC
1)Water tightness is the only
reason of controlling the
crack width.
2)Deflection is higher
compared with SFRC.
3)It is week is high
temprature.

14. NYLON FIBRE REINFORCED
CONCRETE

15. ORGANIC FIBRE
REINFORCED CONCRETE
 Some examples are:
1) JUTE
2) COIR
3) CANESPLITS.

16. CARBON FIBRE
REINFORCED CONCRETE
 Tensile strength of 2110 to 2815 N/Sq.mm
 High modulus of Elasicity and flexural strength.
 Posses good durability.

17. HYBRID-FIBRE REINFORCED
CONCRETE
 Hybrid-Fibre Concrete (HFC) contains
different types of steel fibres.
 Increase the tensile strength and ductility
of the concrete elements .
 Applied amounts of fibres are relatively
low, which guarantees good workability
and economically acceptable costs of the
concrete mixtures.

18. STRENGTH OF FRC
 The concrete strength ranged between 80
and 100 MPa.
 post peak strength are enhanced, both in
tension and in compression.

19. Elastic modulus, creep, and drying
shrinkage of FRC
 Tensile creep is reduced slightly.
 Flexural creep can be substantially
reduced when very stiff carbon fibers
are used.
 It has little effect on the modulus of
elasticity, drying shrinkage, and
compressive creep.

20. FAILURE MODE OF FRC

21. Some developments in fiber
reinforced concrete
 The newly developed FRC named Engineered
Cementitious Composite (ECC) .
 It is 500 times more resistant to cracking and
40 percent lighter than traditional concrete.
 ECC can increase the ductility of concrete or
standard fiber reinforced concrete.
 ECC also has unique cracking behavior.

22. CURRENT DEVELOPMENT
IN FRC
 Three new developments are taking place in
FRC.They are:
1)High Fibre Volume Micro Fibre
System.
2)Slurry Infiltrated Fibre
Concrete(SIFCON).
3)Compact Reinforced Composites.

23. MERITS OF FIBRE REINFORCED
CONCRETE
 Lower the permeability of concrete.
 Reduce bleeding of water.
 It control plastic shrinkage cracking and
drying shrinkage cracking.
 It increase the strength of concrete.
 It reduce the flexural creep.
 It resist structures from aggressive
environment, e.g. high temperatures,
ingress of chlorides and electrical fields.

24. DEMERITS OF FIBRE
REINFORCED CONCRETE
 Not as reliable as steel in high stress/
strain concrete members.
 Good in crack prevention, but if a crack
does form fiber is not as efficient as
controlling the crack.

25. Areas of Application of FRC
materials
 Thin Sheets.
 Roof Tiles.
 Pipes.
 Prefabricated shapes.
 Curtain walls.
 Precast elements.
 Impact resisting
structures.

26. Application of Fibre Reinforced
Concrete in Civil Infrastructure
 Repairs of existing constructions.
 Development of new constructions for long
service-life including tunnels.
 Used in many constructions subjected to
the combination of mechanical load and
impact load.