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compressive strength of concrete

The rebound of an elastic mass depends on the hardness of the surface against which its mass strikes.

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compressive strength of concrete

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  1. About Compressive strength of Concrete

  2. Compressive Strength of the Concrete • The rebound of an elastic mass depends on the hardness of the surface against which its mass strikes. When the plunger of the rebound hammer is pressed against the surface of the concrete, the Spring-controlled mass rebounds and the extent of such a rebound depends upon the surface hardness of the concrete. • The surface hardness and therefore the rebound is taken to be related to the compressive strength of the concrete.  • The rebound value is read from a graduated scale and is designated as the rebound number or rebound index. The compressive strength can be read directly from the graph provided on the body of the hammer.

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