Strength evaluation apparatus

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These mechanical test methods are used for concrete strength evaluation with non-destructive techniques (Concrete Hammer) and partially destructive methods (Penetration Resistance, Pull-out and Pull-off, Microcore). Concrete test hammer used for the non-destructive testing of the surface of hardened concrete to evaluate the strength in various parts of structure. And it has been widely applied in engineering due to the features of simple, cheap and convenient. The pull-off tester used for partially destructive testing of concrete. Even if it can cause some localized damages, these are small enough not to result in a loss of structural performance.