Langry RH75-A brick schmidt rebound hammer used for testing the compressive strength of rock in the range of 10 to 100 N/mm² (145 to 14500 psi).
The spring driven hammer is used to drive the hammer and hit the surface of the brick in the sintered common brick masonry or sintered porous brick masonry through the hammer rod to produce the recovery force of the instantaneous elastic deformation, so that the hammer drives the pointer to bounce back and indicate the bounce back distance, using the bounce back value as one of the indicators related to the compressive strength of the brick in the sintered common brick masonry or sintered porous brick masonry, to presume the compressive strength and grade of the brick
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