Shandong China Coal Industry&Mining Supplies Group
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Product Introduction(chinacoal03)
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 |