Scanning

1. What is ?

Scanning is a non-destructive testing method used by CSI primarily to determine the details of steel reinforcement within concrete structures. CSI use two scanners:

  1. Ground Penetrating Radar (GPR)
    The GPR scanner emits electromagnetic waves into a structure’s subsurface. Changes in the material’s properties, e.g. a change from concrete to steel, cause the waves to reflect. The signals produced by reflected waves allow us to determine details within the structure, such as centre spacing, cover, orientation and general layout of the reinforcement.
  2. Ferroscan
    The ferroscanner emits a magnetic field into the subsurface. Asymmetric changes in the field allow us to identify the cover and diameter of reinforcement.

2. When would you use ?

Scanning can be used to determine the size and layout of steel reinforcement within concrete elements, e.g. beams, columns etc., to help determine their structural capacity – so decisions can be made without invasive investigation

3. What are the Benefits of ?

  • As mentioned above, scanning is non-destructive
  • The scanners are portable, so testing can be carried out in remote areas
  • GPR and ferroscan are complementary – both technologies can be used in
    conjunction for even better results

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