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Rebound Hammers

Original Schmidt

The original is the basis of every major rebound hammer testing standard worldwide.
  • Covers a wide range of applications
  • Proven durability and quality
  • Swiss Made guarantee

Applications:

Estimation of compressive strength of concrete / Mapping of concrete uniformity / Control of concrete curing for formwork removal

The benchmark against which all rebound hammers are compared and sets the international rebound hammer standard
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Diverse
Various models with different impact energies
to cover a wide range of applications.
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Reliability
Proven durability and quality compared with low-cost imitations.
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High quality
World-renowned and established;
Proceq Swiss Made accuracy and reliability.

Swiss Made
Original Schmidt Tech Specs
Sensor
Tech Specs
Impact Energy
2.207 Nm (N), 0.735 Nm (L)

Compressive Strength Range
10 to 70 N/mm2 (1'450 to 10'152 psi)

Display
Mechanical display

Innovation Award
Other customers also purchased:
FAQ

How should I apply impact angle correction to my rebound hammer test result?
Here it is necessary to differentiate between classical rebound hammers (R-value) and the Silver Schmidt hammers (Q-value). Classical rebound hammers require an impact angle correction when the impact is not carried out horizontally. For the Original Schmidt, the correction can be found in the manual for vertically up and vertically down measurements. The Original Schmidt OS8000 applies a more advanced impact angle correction automatically for any angle. On the app, the user can see both the uncorrected and the corrected values. The Silver Schmidt hammers are intrinsically impact angle independent so no correction is necessary.

Which conversion curve should I use with my rebound hammer?
There is no simple answer to this question. The answer depends on the region you are in and the standards you are working to. In China for example there are standardized correlation curves, which may be selected in the Original Schmidt Live app. Other regions such as Korea and Japan have nationally accepted correlation curves that are widely used. These may also be programmed directly into the Schmidt Live app and used. However, unless the standard you are using provides a method to use standardized curves then you should always calibrate your hammer to the concrete under test using a custom materials curve. If this is not possible we recommend using the lower 10th percentile curve with the Silver Schmidt OS8200 hammer to give a conservative estimate. This is a safer option with a smaller chance of overestimating the strength. Another option is to use the EN13791 screening test with either Original Schmidt OS8000 or Silver Schmidt OS8200 which again gives a conservative estimate. The use of custom material curves is fully explained in the tutorial "12. Custom materials" included in the Original Schmidt Live app.
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Standards & Guidelines

Standards

China
  • Arrow, click names to download Standards & Guidelines JGJ-T23
Russia
  • Arrow, click names to download Standards & Guidelines ГОСТ 22690
  • Arrow, click names to download Standards & Guidelines ASTM C 805
  • Arrow, click names to download Standards & Guidelines ASTM D 5873 (Rock)
  • Arrow, click names to download Standards & Guidelines EN 12504-4
  • Arrow, click names to download Standards & Guidelines EN 13791
  • Arrow, click names to download Standards & Guidelines ISO/DIS 8045
  • Arrow, click names to download Standards & Guidelines JIS A1155

Guidelines

  • Arrow ACI 228.1R