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Use of natural fibers to enhancetensile capacity of concrete

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Reinforced Concrete

• Pros

 – High Strength – High Safety

 – Material Availability

 – Easy Workmanshi

• Cons

 – High Cost

 – !mact on Environment

 – Weight

 – Corrosion of Steel

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"iber Reinforced Concrete

• #ensile roerties

• "le$%ral Strength

• &arrier to Cracking• #o%ghness

• !mact Resistance

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Why 'at%ral "ibers (

• High Secific Strength

• Cost effective

• )ight *eight• Readily available

• S%stainable

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+b,ectives

• #ensile strength that can be achieved

• +tim%m "iber- Cement ratio

• .ariations in roerties• S%itable material for Sri )anka

• /%rability

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"ibers to be st%died

• Coir0 ine needles

 Alicable Elements

• )ightly )oaded Str%ct%res – )intel &eams

 – Manholes

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