The rebound method for testing concrete strength is a widely used non-destructive testing technique in construction engineering.
The basic principle is based on the correlation between the surface hardness of concrete and its compressive strength, and the actual strength of concrete is calculated by measuring the rebound value after the rebound instrument impacts the concrete surface.
During the testing process, the spring hammer head of the rebound instrument is used to impact the concrete surface with a certain amount of kinetic energy, generating rebound force through the compression and release of the spring, and recording the rebound value.
The magnitude of rebound value reflects the hardness of the concrete surface, and indirectly infers its internal strength characteristics.
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