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    INTRODUCING

    TOFIBRE REINFORCED

    CONCRETE

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    Fiber reinforced concrete

    Fiber reinforced concrete (FRC) is

    concrete containing fibrous material

    which increases its structural integrity.

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    Historical perspectiveBC 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.

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    TYPES OF FIBRE REINFORCED

    CONCRETE(FRC)

    FR

    CONCRETE

    GLASS FR

    CONCRETE

    PLASTIC FR

    CONCRETE

    STEEL FR

    CONCRETE

    NYLON FR

    CONCRETE

    ORGANIC FR

    CONCRETECARBONFR

    CONCRETE

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    GLASS FIBRE REINFORCED

    CONCRETE

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    Glass fibre manufactured in the

    form of glass fibre sheet as shown

    in figure

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    High Zirconia Glass Fibre

    Reinforced Concrete (GRC)

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    Alkali Resistant Glass fibre

    Reinforced Concrete (GRC)

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    STEEL FIBRE REINFORCED

    CONCRETE(SFRC)

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    C i S h Of

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    Compressive Strength Of

    SFRC

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    Difference Between

    SFRC and PFRC

    SFRC1)Improving durability is the

    reason of controlling

    crack width.2)Deflection is lower

    compared with PFRC.

    3)It can use in any exposure

    condition.

    PFRC1)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.

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    NYLON FIBRE REINFORCED

    CONCRETE

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    ORGANIC FIBRE

    REINFORCED CONCRETE

    Some examples are:

    1) JUTE

    2) COIR3) CANESPLITS.

    CARBON FIBRE

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    CARBON FIBRE

    REINFORCED CONCRETE

    Tensile strength of 2110 to 2815 N/Sq.mm

    High modulus of Elasicity and flexural strength.

    Posses good durability.

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    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.

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    STRENGTH OF FRC

    The concrete strength ranged between 80

    and 100 MPa.

    post peak strength are enhanced, both intension and in compression.

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    Elastic modulus, creep, and drying

    shrinkage of FRC

    Tensile creep is reduced slightly.

    Flexural creep can be substantiallyreduced when very stiff carbon fibersare used.

    It has little effect on the modulus ofelasticity, drying shrinkage, andcompressive creep.

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    FAILURE MODE OF FRC

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    Some developments in fiber

    reinforced concrete The newly developed FRC named Engineered

    Cementitious Composite(ECC).

    It is 500 times more resistant to cracking and40 percent lighter than traditional concrete.

    ECC can increase the ductility of concrete orstandard fiber reinforced concrete.

    ECC also has unique cracking behavior.

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    CURRENT DEVELOPMENT

    IN FRC

    Three new developments are taking place inFRC.They are:

    1)High Fibre Volume Micro Fibre

    System.2)Slurry Infiltrated Fibre

    Concrete(SIFCON).

    3)Compact Reinforced Composites.

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    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 aggressiveenvironment, e.g. high temperatures,ingress of chlorides and electrical fields.

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    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.

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    Areas of Application of FRC

    materials Thin Sheets.

    Roof Tiles.

    Pipes.

    Prefabricated shapes.

    Curtain walls.

    Precast elements.

    Impact resistingstructures.

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    ApplicationofFibre ReinforcedConcrete 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.