Bending failure of an under reinforced concrete beam


  • Material
    Reinforced concrete
  • Dimensions
    63mm x 130mm
  • Design Criteria
    Designed for ductile failure

This video demonstrates a four-point bending test on an under-reinforced concrete beam.

Learning Outcomes:

Viewers will gain an improved understanding of:

  • Ductile failure in reinforced concrete.
  • How the quantity of reinforcement in a beam affects the failure mode.

The beam demonstrates ductile behaviour as it is loaded to failure. The video demonstrates how controlling the quantity of steel reinforcement in the tension zone of a beam ensures a gradual ductile failure.

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