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