![]() ![]() Precise measurements are not available from probe testing, and the act of probing concrete will leave a hole in the concrete surface that should be repaired. This type of testing is fine for on-site, general tests, but it is limited. There are reports, however, that the probes can be inaccurate.ĭensity is often what is tested with a probe, and a probe will embed deeper in concrete that is suffering from failure in density, subsurface hardness, and as the strength of concrete weakens. ![]() The results of probe measurements can be converted to compressive strength values. This device may use a powder cartridge to insert a high-strength steel probe into a section of concrete. ![]() Some factors that can skew a test with a rebound hammer include: However, the test is imprecise and cannot accurately predict the strength of concrete. This is a form of NDT that is a fast and simple means of testing concrete.
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