Which method is specifically used for flaw detection in concrete?

The Impact Echo Test is specifically designed for flaw detection in concrete structures. This non-destructive testing method works by generating a short mechanical impact on the concrete surface, which creates stress waves that propagate through the material. The test measures the time it takes for these waves to travel through the concrete and return to the surface. By analyzing the reflected waves, engineers can identify the presence of flaws such as cracks, voids, or delaminations within the concrete. The effectiveness of the Impact Echo Test comes from its ability to provide information about the internal structure of the concrete without causing any damage.

In contrast, while a Moisture Meter is useful for measuring the moisture content in concrete, it doesn’t provide information about structural integrity or flaws. Spectral Analysis, although applicable in various contexts, is generally not aimed specifically at detecting flaws within concrete. Vibration Testing can indicate structural performance and signs of distress, but it does not specifically target flaw detection in the same manner as the Impact Echo Test. Thus, the primary function of the Impact Echo Test to detect flaws in concrete makes it the correct choice.