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Fiber Wrapping of Concrete Cylinders

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Cylinder 3 three layer of carbon fiber wrap. Failure type: relatively slow ... Fiber wrapping greatly increases the compressive strength of concrete cylinders ... – PowerPoint PPT presentation

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Title: Fiber Wrapping of Concrete Cylinders


1
Fiber Wrapping of Concrete Cylinders
  • Team Members
  • Ana Lissette Melendez
  • Rashad Thornton
  • Rohit Gupta

2
Introduction
  • Test the strength of concrete cylinders wrapped
    with carbon fibers
  • Possible uses
  • Advantages over alternative methods speed,
    simplicity of application low cost
  • Should fiber wrapping be employed?

3
Preparing the Cylinders for Testing
  • How much fiber should be used?
  • Coating the cylinders with resin
  • Adding the fiber

4
Preparation
  • Cylinders used
  • Dimension of Cylinders
  • Height 8 in.
  • Diameter 4 in.
  • Dimensions of Fiber Wrap
  • Length 1.25?4 15.07 in.
  • Height 7.5 in.
  • Method
  • Epoxy Coat
  • Fiber Wrapping

5
Testing the Cylinders
  • Using the SATEC testing machine
  • Concrete cylinders placed into machine
    symmetrically for loading
  • Loading applied

6
Test Results
  • Cylinder 1 unwrapped
  • Failure type brittle
  • Compressive strength 4418 psi.
  • Peak load 55520 lbs.
  • Cylinder 2 one layer of fiber wrapping
  • Failure type moderately slow
  • Compressive strength 9309 psi.
  • Peak load 117000 lbs.
  • Cylinder 3 three layer of carbon fiber wrap
  • Failure type relatively slow
  • Compressive strength 14640.0 psi
  • Peak load 184000 lbs

7
Graphs of Experiment Data
Figure 1- The Failure Pattern of Unreinforced
Concrete
8
Graph and Picture 1
Figure 2.1- The Failure Pattern of Concrete with
One Layer of Fiber
Figure 2.2 The Crushed Specimen
9
Graph and Picture 2
Figure 3.1- The Failure Pattern of Concrete with
Three Layers of Fiber
Figure 3.2- The Crushed Specimen
10
Conclusion
  • Fiber wrapping greatly increases the compressive
    strength of concrete cylinders
  • It is a simple non-invasive method to retrofit
    existing concrete structures

11
Ana Lissette Melendez Rashad Thornton Rohit
Gupta
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