Concrete Test Hammer - SilverSchmidt
Two factors contribute to the improved performance of this concrete test hammer 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
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.
- The rebound value requires no angular correction
- The concrete test hammer offers 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)
- A large number of measurement points can be easily collected by the concrete test hammer and automatically evaluated according to statistical data
- The concrete test hammer offers automatic conversion to the required measurement unit (MPa, N/mm2, kg/cm2, psi)
Applications
- Ideally suited for on-site tests of concrete
- The concrete test hammer is suitable for testing a wide variety of concrete, mortar and rock, but also for testing metal castings
- Handy for difficult to access or confined test areas (i.e. working overhead)
- Assessment on young, soft concrete with mushroom plunger of the concrete test hammer, eg. asphalt strength testing
- It can be even used for underwater applications
- Combining Methods to Evaluate Concrete Strength
Product Variations
- Concrete test hammer SilverSchmidt Type ST N - Standard impact energy (2.207 Nm)
- Concrete test hammer SilverSchmidt Type ST L - Reduced impact energy (0.735 Nm)
- Concrete test hammer SilverSchmidt Type PC N - Standard impact energy (2.207 Nm) with PC communication, increased memory capacity and Hammerlink software
- Concrete test hammer SilverSchmidt Type PC L- Reduced impact energy (0.735 Nm) with PC communication, increased memory capacity and Hammerlink software
Applicable Standards
The following standards can be applied to the concrete test hammer:
- EN12504-2 (European Standard)
- ASTM C 805 (North American Standard)
- JGJ/T 23-2001 (Chinese Standard)
Technical Data
| Mechanical data | Type ST N / PC N concrete test hammer | Type ST L / PC L concrete test hammer |
| Impact energy | 2.207 Nm | 0.735 Nm |
| Hammer mass | 135 g | 135 g |
| Spring constant | 0.79 N/mm | 0.26 N/mm |
| Spring extension | 75 mm (2.95”) | 75 mm (2.95”) |
| Housing dimensions | 55 x 55 x 255 mm (2.16” x 2.16” x 9.84”) | |
| Weight | 570 g (1.3 lb) | |
| PC application | |
| Only for the concrete test hammer SilverSchmidt versions PC N and PC L: Hammerlink Software | |
| Electrical data | ||
| Display | 17 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 connection | USB type B (5V, 100 mA) | |
| Measuring ranges | ||
| Concrete compressive strength | 10-100 N/mm2 (1450-14500 psi) | |
| Operating temperature | 0 to 50 °C (32 to 122 °F) | |
| Storage temperature | -10 to 70 °C (14 to 158 °F) | |
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