IMPROVEMENT AND COMBINATION OF ECHO METHODS FOR NDT OF CONCRETE ELEMENTS

摘要

The application and the development of echo methods for non-destructive testing in civil engineering (NDT-CE) are described. Examples for onsite investigations using impulse radar, ultrasonic echo and impact-echo for the evaluation of concrete elements are given. Further basic research in order to enhance the capacity and the reliability of the methods is necessary. To do this the co-operation in a research group sponsored by the German Research Council (DFG) is an important support. First examples for the combination of the methods by means of data superposition are presented.