洪堡's concrete rebound hammer provides a reliable, 然而,经济, alternative to the original schmidt hammer. It is designed for testing concrete 4" (100mm) or more in thickness with a maximum particle size less than or equal to 1.25" (32mm), providing a quick and simple test for obtaining an immediate indication of concrete strength in various parts of a structure. The 洪堡 rebound hammer covers a compressive strength range of 1,450 to 9,000 psi (10 to 62 MPa). 操作, the rebound hammer is pressed against the concrete structure and the rebound values are displayed on a mechanical sliding scale. These values can then be correlated to compressive strength by using the conversion table chart affixed to the hammer. It includes a grinding stone, a cloth carrying case, instruction booklet and conversion charts.
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