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Costly and destructive inspections of dike coverings

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Issue

Inefficient data collection

The collection of data for monitoring or inspection is costly and/or time consuming.

There is a risk of grit accumulation and cavities in dike coverings made of satiated penetrated quarry stone and poured asphalt. The inspection of grit accumulation and cavities is difficult because they are not visible at the surface. The current inspections exist of core drillings that are destructive to the covering and only provide a limited image. 

Solution

Inspection protocol to determine cavities in dike coverings

The inspection protocol describes how satiated penetrated quarry stone can be inspected using passive microwave radiometry (MIRA). Using this, grit accumulations and cavities can be detected.

Inspectieprotocol voor het bepalen van holle ruimten in dijkbekledingen

Pros

  • Not damaging to dike coverings
  • Less labour intensive than current methods
  • Better quality of dike coverings

Characteristics

  1. Topic Water safety
  2. Development state 9: Successfully used in operational situation
  3. Setting type Coastal area, Lake area
  4. Water type Surface water
  5. Project period 0-3 months

Submitted innovation Award

Water Innovation Award
2016