石屎試力槍 Type N
Original SCHMIDT Hammer
Original SCHMIDT Hammer Type N
Measuring range 10 to 70 N/mm2 compressive strength (below 25 N/mm2 type P is better suited). Impact energy = 2,207 Nm.
Rebound values are read from a dial.
Testing the compressive strength of a prefabricated concrete girder. Rebound values are recorded by an assistant who will calculate mean values and read compressive strength values from a conversion diagram.
Concrete uniformity testing
Concrete compressive strength estimation
Concrete screening test to identify core locations
Concrete compressive strength range 10-70 N/mm2 (1'450 to 10'152 psi)
In-situ rock testing on massive rock
Standard impact energy. Minimum thickness of test object: 100 mm (3.9”) and should be firmly fixed in the structure.