Concrete Test Hammer - SilverSchmidt

Concrete Test Hammer - SilverSchmidt

The SilverSchmidt ST/PC is the first integrated concrete test hammer featuring true rebound value and unmatched repeatability.  
Two factors contribute to the improved performance of the SilverSchmidt ST/PC over its predecessors:

  • Velocity based detection of the rebound quotient
  • The lightweight hybrid design of the impact plunger is made from aerospace alloy, matched to the elastic properties of the concrete and equipped with a hardness steel cap

Independent validation testing by BAM (Federal Institute for Materials Research and Testing, Germany) has shown the SilverSchmidt ST/PC to have less dispersion than the classical concrete test hammer over the entire range.  
The unique design and high quality construction of the concrete test hammer SilverSchmidt ST/PC makes rebound hammer testing quicker and more accurate than ever before.

Features

  • The SilverSchmidt ST/PC concrete test hammer combines a high measurement accuracy with an unmatched repeatability.
  • Impact direction independence: The forward and the rebound velocity of the hammer mass are both measured in close proximity to the point of impact. The rebound value requires no angular correction
  • Customer conversion curves for a wide range of compressive concrete strengths, including low fc (<10 N/mm2, 1’450 psi) and high strength concrete (up to 100 N/mm2, 14’500 psi)
  • Objective evaluation: a large number of measurement points can be easily collected by the SilverSchmidt ST/PC and automatically evaluated according to statistical data
  • A two-layer seal prevents dust and dirt from penetrating the interior of the concrete test hammer.
  • Ergonomics: the SilverSchmidt ST/PC body lies very comfortable in the hand
  • Automatic conversion to the required measurement unit (MPa, N/mm2, kg/cm2, psi)

Applications

  • Ideally suited for on-site tests of concrete
  • Suitable for testing a wide variety of concrete, mortar and rock
  • Handy for difficult to access or confined test areas (i.e. working overhead)
  • Especially convenient for tests on tunnel linings as measurements with the SilverSchmidt ST/PC are independent of impact direction
  • Assessment on young, soft concrete with mushroom plunger (e.g. to indicate when to remove forms or for formwork)

Product Variations

  • SilverSchmidt test hammer Type ST N - Standard impact energy (2.207 Nm)
  • SilverSchmidt test hammer Type ST L - Reduced impact energy (0.735 Nm)
  • SilverSchmidt test hammer Type PC N - Standard impact energy (2.207 Nm) with PC communication, increased memory capacity and Hammerlink software
  • SilverSchmidt test hammer Type PC L- Reduced impact energy (0.735 Nm) with PC communication, increased memory capacity and Hammerlink software

Warranties

  • Standard 2-year limited warranty on electronic parts

  • Optional extended warranty periods up to 3 additional years

Applicable Standards

  • EN12504-2 (European Standard)
  • ASTM C 805 (North American Standard)
  • JGJ/T 23-2001 (Chinese Standard)

Technical Data

Mechanical dataType ST N / PC NType ST L / PC L
Impact energy2.207 Nm0.735 Nm
Hammer mass135 g135 g
Spring constant0.79 N/mm0.26 N/mm
Spring extension75 mm (2.95”)75 mm (2.95”)
Housing dimensions55 x 55 x 255 mm (2.16” x 2.16” x 9.84”)
Weight570 g (1.3 lb)
PC application
Only for the versions PC N and PC L: Hammerlink Software
Electrical data                          

Display17 x 71 pixels; graphic / alphanumeric
Power consumption~13 mA measuring, ~4 mA setup and review, ~0.02 mA idle
Battery life>5000 impacts (before recharging)
Charger connectionUSB type B (5V, 100 mA)
Measuring ranges
Concrete compressive strength10-100 N/mm2 (1450-14500 psi)
Operating temperature0 to 50 °C (32 to 122 °F)
Storage temperature-10 to 70 °C (14 to 158 °F)

More Information

www.silverschmidt.com
  
       

Please contact us for more information on the SilverSchmidt ST/PC concrete test hammer.