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Typical issues such as structure resolution, geometry determination, quantification of material parameters and the description of damage are relevant for quality monitoring, condition assessment and predictive maintenance over the entire service life of a building.

The following test methods are among those used in the NDT laboratory:

  • Rebound hammer (compressive strength, comparative studies)
  • Profometer/profoscope (concrete cover, reinforcement location and diameter determination)
  • Profometer corrosion (location of the corrosion-active area – chloride-induced)
  • Ultrasound (e.g. structure resolution, fault location such as gravel pockets, delamination)
  • Radar (e.g. structure resolution, extensive reinforcement process, tendon location)
  • Impact echo (e.g. thickness determination, tendon location)


Taking the respective boundary conditions into account, a test concept tailored to the issue is developed, which includes the selection of an optimised test method and the development of a procedure. This procedure ensures the quality and comparability of the test results as well as compensates for missing normative foundations. Following a feasibility test, further procedures are coordinated with the client through a step-by-step on-site working method. This ensures that the non-destructive testing is used efficiently and that the client’s requirements are always met to maintain the infrastructure works in a cost-efficient and predictive manner.