Fibre Reinforced Polymer (FRP)

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Fiber Reinforced Concrete(FRC)
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Feisal salah Introduction

• Is a concrete mix that contains short discrete
  fibers, uniformly distributed and randomly
  oriented

• Aims to produce stronger and tougher concrete
• Can add to the tensile loading capacity of the
  composite system

• 4 types of FRC

• Steel Fibers (SFRC)
• Glass Fibers (GFRC)
• Synthetic Fibers (SFRC)
• Natural Fibers (NFRC)

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Advantages

• Ease of installation
• Concrete placement and crack control in one
  operation
• No requirement for crack control steel mesh
• Increased cohesion of the mix
• Reduced bleeding of water to the surface

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Disadvantages

• Greater reduction of workability
• High cost of the materials

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Steel Fiber Reinforce Concrete

• Increases strain capacity and impact resistance
• Improved resistance to impact and greater
  ductility of failure in compression, flexure and
  torsion
• High tensile strength (0.5 2 GPa)
• Modulus of elasticity (200 GPa)
• Ductile/plastic stress-strain characteristic
• Low creep

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Glass Fiber Reinforced Concrete

• Mixed by Portland cement, fine aggregates, water
  and alkali-resistant glass fibers
• High tensile strength (2 4 GPa)
• Elastic modulus (70 80 GPa)
• Brittle stress-strain characteristics (2.5 4.8
  elongation at break)
• Low creep at room temperature

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Synthetic Fiber Reinforced Concrete

• Man-made fibers from petrochemical and textile
  industries
• Low-volume percentage (0.1 to 0.3 by volume)
• high-volume percentage (0.4 to 0.8 by volume)

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Selected Synthetic Fiber Types and Properties
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Types of Synthetic Fiber Reinforced Concrete

• Acrylic
• Aramid
• Carbon
• Nylon
• Polyester
• Polyethylene
• Polypropylene

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Natural Fiber Reinforced Concrete

• Obtained at low cost and low levels of energy
  using local manpower and technology
• Unprocessed natural fibers
• - made with unprocessed natural fibers such
  as coconut coir, sisal, sugarcane bagasse,
  bamboo, jute, wood and vegetable
• Processed natural fibers
• - Wood cellulose is the most frequently

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Typical Properties of Natural Fibers
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Application of FRC

• Applications for new construction
• Bridge
• Repair and rehabilitation applications
• Beam and Slab
• Architectural applications
• Interior Design

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Use of Carbon FRC as reinforcement of a concrete
slab
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Comparison
Fiber Reinforced Concrete (FRC) Normal Reinforce Concrete
Higher durability Lower durability
Protect steel from corrosion Steel potential to corrosion
Lighter (materials) Heavier (materials)
More Expensive Economical
With the same of volume, the strength is greater With the same of volume, the strength is less.
higher workability Less workability as compare to FRP
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Conclusion

• FRC - very costly
• - normally apply on bridge constructions
• - the ability to sustain a load without
• excessive deformation or failure
• - used as external reinforcement in the
• rehabilitation of reinforced
  concrete (RC)
• beams and slabs
• - architects used it as
  siding/cladding,
• roofing, flooring and partitions