fiber reinforced concrete (frc)
DESCRIPTION
Fiber Reinforced Concrete (FRC). 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:. - PowerPoint PPT PresentationTRANSCRIPT
Fiber Reinforced ConcreteFiber Reinforced Concrete(FRC)(FRC)
Feisal salahFeisal salah Introduction Introduction
Is a concrete mix that contains short discrete fibers, Is a concrete mix that contains short discrete fibers, uniformly distributed and randomly oriented 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:4 types of FRC: Steel Fibers (SFRC)
Glass Fibers (GFRC)
Synthetic Fibers (SFRC)
Natural Fibers (NFRC)
AdvantagesAdvantages
Ease of installationEase of installation
Concrete placement and crack control Concrete placement and crack control in one operationin one operation
No requirement for crack control steel No requirement for crack control steel meshmesh
Increased cohesion of the mixIncreased cohesion of the mix
Reduced bleeding of water to the Reduced bleeding of water to the surfacesurface
DisadvantagesDisadvantages
Greater reduction of workabilityGreater reduction of workability
High cost of the materialsHigh cost of the materials
Steel Fiber Reinforce ConcreteSteel Fiber Reinforce Concrete
Increases strain capacity and impact Increases strain capacity and impact resistanceresistanceImproved resistance to impact and greater Improved resistance to impact and greater ductility of failure in compression, flexure ductility of failure in compression, flexure and torsionand torsionHigh tensile strength (0.5 – 2 GPa)High tensile strength (0.5 – 2 GPa)Modulus of elasticity (200 GPa)Modulus of elasticity (200 GPa)Ductile/plastic stress-strain characteristicDuctile/plastic stress-strain characteristicLow creepLow creep
Glass Fiber Reinforced ConcreteGlass Fiber Reinforced Concrete
Mixed by Portland cement, fine Mixed by Portland cement, fine aggregates, water and alkali-resistant aggregates, water and alkali-resistant glass fibersglass fibers
High tensile strength (2 – 4 GPa)High tensile strength (2 – 4 GPa)
Elastic modulus (70 – 80 GPa)Elastic modulus (70 – 80 GPa)
Brittle stress-strain characteristics (2.5 – Brittle stress-strain characteristics (2.5 – 4.8% 4.8% elongation at break)elongation at break)
Low creep at room temperatureLow creep at room temperature
Synthetic Fiber Reinforced Synthetic Fiber Reinforced ConcreteConcrete
Man-made fibers from petrochemical and Man-made fibers from petrochemical and textile industriestextile industries
Low-volume percentage (0.1 to 0.3% by Low-volume percentage (0.1 to 0.3% by volume)volume)
high-volume percentage (0.4 to 0.8% by high-volume percentage (0.4 to 0.8% by volume)volume)
Selected Synthetic Fiber Types and Selected Synthetic Fiber Types and PropertiesProperties
Types of Types of Synthetic Fiber Synthetic Fiber Reinforced ConcreteReinforced Concrete
Acrylic Acrylic AramidAramidCarbonCarbonNylonNylonPolyesterPolyethylenePolypropylene
Natural Fiber Reinforced Concrete
Obtained at low cost and low levels of Obtained at low cost and low levels of energy using local manpower and energy using local manpower and technologytechnologyUnprocessed natural fibersUnprocessed natural fibers- - made with unprocessed natural fibers such as made with unprocessed natural fibers such as coconut coir, sisal, sugarcane bagasse, bamboo, jute, coconut coir, sisal, sugarcane bagasse, bamboo, jute, wood and vegetablewood and vegetable
Processed natural fibersProcessed natural fibers - - Wood cellulose is the most frequentlyWood cellulose is the most frequently
Typical Properties of Natural FibersTypical Properties of Natural Fibers
Application of FRCApplication of FRC
Applications for new constructionApplications for new construction Bridge Bridge
Repair and rehabilitation applicationsRepair and rehabilitation applications Beam and SlabBeam and Slab
Architectural applications Architectural applications Interior DesignInterior Design
Use of Carbon FRC as reinforcement of a concrete slab
ComparisonComparisonFiber Reinforced Concrete (FRC)Fiber Reinforced Concrete (FRC) Normal Reinforce ConcreteNormal Reinforce Concrete
Higher durability Higher durability Lower durabilityLower durability
Protect steel from corrosionProtect steel from corrosion Steel potential to corrosionSteel potential to corrosion
Lighter (materials)Lighter (materials) Heavier (materials)Heavier (materials)
More ExpensiveMore Expensive Economical Economical
With the same of volume, the With the same of volume, the strength is greaterstrength is greater
With the same of volume, the With the same of volume, the strength is less.strength is less.
higher workabilityhigher workability Less workability as compare to Less workability as compare to FRPFRP
ConclusionConclusion
FRC - FRC - very costlyvery costly
- - normally apply on bridge constructionsnormally apply on bridge constructions
- - the ability to sustain a load withoutthe ability to sustain a load without
excessive deformation or failureexcessive deformation or failure
- - used as external reinforcement in the used as external reinforcement in the
rehabilitation of reinforced concrete (RC)rehabilitation of reinforced concrete (RC)
beams and slabsbeams and slabs
- - architects used it as siding/cladding,architects used it as siding/cladding,
roofing, flooring and partitions roofing, flooring and partitions