Description

REBOUND HAMMER

Based on Schmidt mechanism Vedantrik technologies has developed very compact and user friendly Rebound hammer. It follows Various National & International standards IS-516, ASTM C805, DIN 1048, and BS1881.

Rebound Hammer is used for quality assessment of Concrete. Plunger of rebound hammer pressed against concrete to give the rebound number, rebound number is directly proportional to the hardness of concrete and vice versa.
It is also called as Schmidt hammer as it’s mechanism firstly invented by Ernst Schmidt (a Swiss Engineer).

Rebound numbers are calibrated with spring stiffness and concrete hardness and further co-related to find compressive strength. Compressive strength can be found manually by referring graph provided with Hammer.

Specifications
Range : 10N/mm2 – 70N/mm2
Standard Impact Energy : 2.207 J
List Count : 2 Rebound Number
Weight (mass) : 800gram Approx.
Dimension : Dia 60mm, Length 1ft Approx.

How to check calibration ?

To check the correctness or calibration of Rebound Hammer, it is pressed vertically downward on the tip of anvil as shown in the figure 2. As per IS-516 Anvil should be of hardness HRC 66+/-2, Vedantrik Rebound Hammer gives 80+/-2 rebound Number in good condition, on Standard anvil of hardness HRC66+/-2. Anvil is preferred with NABL calibration report.

Standard Package includes :

1. Rebound Hammer.
2. Carrying case with neck strap.
3. Carborandum Stone
4. Calibration Certificate

(Anvil is not included in the standard package)

Note : Our products are upgraded as per upcoming technology and revised standards Hence technical literature can be changed in future.