Digital Rebound Test Hammer

The rebound number determined by this method can be used to assess the uniformity of concrete in situ, to delineate zones or areas of poor quality or deteriorated concrete in structures. This NDT test method is not intended as an alternative for the compressive strength determination of concrete, but with suitable correlations already saved in the instrument, it provides an estimate of the in situ compressive strength.

This new working principle is equivalent to the traditional measurement of maximum spring length after the impact, but it provides the following benefits:

  • higher accuracy and stability of the readings not affected by wear and tear
  • setting of the impact angle no longer required
  • a check of the device reliability can be performed during each impact, even without the calibration anvil


Main features
  • Test procedure conforming to EN 12504-2 and ASTM C805
  • Measuring range: from 10 to 100 N/mm²
  • Allows to generate customized test procedure
  • Storage capacity 2 Mb
  • Saves, displays and downloads data to PC via USB port
  • PC software included
  • Integrated rechargeable lithium ion battery of 1600 mAh and multi-voltage / multi-frequency battery charger
  • EN 12504-2
  • ASTM C805
  • Impact energy: 2.207 Nm
  • Measuring range: from 10 to 100 N/mm2
  • High-contrast graphic display 128×64 pixel and 6 keys membrane keyboard
  • Results are displayed as numerical and graphical format
  • USB port and PC software
  • Case dimensions: 280x100x390 mm
  • Weight: approx. 2 kg