Application of Impact-Echo techniques for crack detection and crack parameter estimation in concrete

C. U. Grosse*, H. W. Reinhardt, M. Krüger, R. Beutel

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review


Existing instruments designed for measurements involving the Impact-Echo (IE) technique are usually of limited use in field tests when investigating large concrete structures like buildings or tunnels. In 2001 demand for such instruments increased significantly particularly in Germany, as German authorities made quality control tests of state road tunnel constructions mandatory. For this task, it is essential that the equipment used for Impact-Echo measurements along profiles uses the scanning technique and is easy to work. A new concept for impact-echo testing systems is presented. The new device is small and easy to handle, robust and unproblematic regarding transportation. The system utilizes advanced impact generation, measurement, data acquisition, filtering, and visualization techniques. Regarding the software state-of-the-art requirements were implemented for both, scientific applications and field-tests. A new option is the flaw detection and estimation of crack parameters like crack width and depth out of the impact-echo signals. Some first results of in-situ measurements are shown.

Original languageEnglish
Title of host publication11th International Conference on Fracture 2005, ICF11
Number of pages6
Publication statusPublished - 1 Dec 2005
Externally publishedYes
Event11th International Conference on Fracture 2005, ICF11 - Turin, Italy
Duration: 20 Mar 200525 Mar 2005


Conference11th International Conference on Fracture 2005, ICF11
Abbreviated titleICF11

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

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