13. Difference Between
SFRC and PFRC
1)Improving durability is the
reason of controlling
2)Deflection is lower
compared with PFRC.
3)It can use in any exposure
1)Water tightness is the only
reason of controlling the
2)Deflection is higher
compared with SFRC.
3)It is week is high
17. HYBRID-FIBRE REINFORCED
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
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
It has little effect on the modulus of
elasticity, drying shrinkage, and
21. Some developments in fiber
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
Three new developments are taking place in
1)High Fibre Volume Micro Fibre
2)Slurry Infiltrated Fibre
3)Compact Reinforced Composites.
23. MERITS OF FIBRE REINFORCED
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
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
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