Concrete Rebound Hammer is used for estimating the concrete strength and non destructive test on concrete. These are very durable and ensure error free performance for a long duration. These are manufactured using qualitative grades of MOC and are promised for on time performance.
Operation:
- It consists of a barrel in which is housed a hammer mass attached to an impact spring which slides on a guide bar.
- A plunger is attached to the guide bar which is pressed against the surface to be tested.
- As the piston is pressed against the surface to be tested, on reaching the compressive strength, the hammer mass is released and rebounds to a certain extent (according to the strength of the surface) which is indicated by a rider on a calibrated scale.
- A lock button fixed on the body of the hammer locks the rider in place and the rider can be recurred to zero position by using the same button.
- The equivalent compressive strength can be computed from the chart supplied.
- Each hammer is calibrated against at standard test hammer, and is suitable for specimen of compressive strengths 100 – 700 kg/cm.
- The instrument, complete with a grinding stone for polishing the test surface, is supplied in carrying case.