Estimation of Thickness of Concrete Structures using the Impact Echo Method and Ultrasonic Pulse Velocity Method

  • Hong, Seonguk (Department of Architecture Engineering, Hanbat National University) ;
  • Lee, Yongtaeg (Department of Architecture Engineering, Hanbat National University) ;
  • Kim, Seunghun (Department of Architecture Engineering, Hanbat National University) ;
  • Lee, Changsik (Department of Architecture Engineering, Hanbat National University)
  • Received : 2016.10.28
  • Accepted : 2016.12.14
  • Published : 2016.12.30


The structure must be periodically checked and measures must be taken to prevent deterioration in building construction. From this point of view, a nondestructive test is essential to estimate whether the construction of buildings is proper, and whether the dimension of depositing concrete is consistent and without damage. This study estimated the thickness of the concrete component of construction framework using the ultrasonic velocity method and the impact echo method, in order to investigate reliability of the estimation of the thickness of normal strength concrete and high strength concrete, leading to the following conclusions. In the estimation of the thickness of the concrete structures, specimens of normal strength of 24MPa and specimens of high strength of 40MPa demonstrated an average error rate of 5.1% and 2.2%, respectively. The impact-echo method, one of the non-destructive tests, is verified as an efficient diagnostic technique. With this information, we will determine specific standards for the maintenance of structures, and the re-creation of lost building blueprints.


Supported by : Hanbat National University, National Research Foundation of Korea(NRF)


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