基于弹性波CT的大体积混凝土检测应用

现代土木工程时常涉及大体积混凝土,其施工及养护过程极易出现质量问题,因此项目实施过程中检测工作始终贯穿于各个环节。常规混凝土无损检测方法一般无法对混凝土内部大截面进行直观评判,而弹性波CT则一次性重构截面波速分布,经反演后直接推定剖面内缺陷存在与否以及缺陷的位置及规模。通过弹性波CT在大体积混凝土检测中的应用,并结合超声法等验证手段,验证了该方法分辨率高、可靠性好、图像直观等优点,为其他相关类型项目提供了有益的参考。

Application of Mass Concrete Detection Based on Elastic Wave CT

Mass concrete is often involved in the modern civil engineering. And there are the quality problems easily in its construction and curing process. Therefore, the detection work is carried out always throughout all links of the project implementation process. The conventional non-destructive testing methods for concrete are generally unable to visually judge the large internal sections of concrete, but the elastic wave CT can reconstruct the cross-sectional wave velocity distribution at one time. After inversion, it is directly inferred whether there are defects in the profile and the location and scale of the defects. The advantages of this method, such as high resolution, good reliability and intuitive images are effectively verified by the application of elastic wave CT in mass concrete detection, and combined with the verification methods such as ultrasound, which can provide a useful reference for the other related types of projects.