(chinacoal08)ZC3-A Concrete Rebound Hammer is used to test the concrete comprehensive strength within the range of
10~60Mpa. It consists of a spring-loaded steel hammer that when released strikes a steel plunger in contact with the concrete surface.
The rebound number can be directly read on a linear scale.
Main Parameter
Standard energy | 2.207J
|
Length of pointer | 20.0±0.2mm
|
Friction of pointer | 0.65±0.15N
|
Radius of top of plunger | 25±1.0mm
|
Rigidity of impact spring | 785.0±40.0N/m
|
Travel of impact spring | 61.5±0.3mm
|
Position of releasing hammer mass | at the scale mark of "100"
|
Striking travel of hammer mass | 75±0.3mm
|
Initial position of hammer mass | at the scale mark of "0"
|
Rebound number on anvil | 80±2 |
