Study on ultrasonic testing of imperfect defects in concrete

摘要

When there are imperfect defects in the concrete elements, it will have seriously impacted on the bearing capacity, durability and lifetime of the structure. Ultrasonic technology was used to effectively test the imperfect defect in concrete. The results show that the technology of the plane for measuring method can be adopted to detect the compactness of concrete. If the size of imperfect defects is smaller than the diameter of the probe, the detection errors should be larger, even be not tested. And it is more suitable for the larger size of imperfect especially more than 50 mm. At the same time, the imperfect areas in concrete frequently exist in the corner position, and compactness in central location is good.