Langry RH225-A Mechanical Concrete Test Hammer
The industry-standard mechanical rebound hammer for non-destructive compressive strength estimation of normal structural concrete from 10 to 60 MPa.
Key Engineering Highlights
- ✓ Standard Type N nominal impact energy of 2.207 Joules (0.225 kgf·m)
- ✓ Wide testing measuring range covering 10 to 60 MPa compressive strength
- ✓ Aerospace-grade hardened aluminum housing resistant to harsh jobsite conditions
- ✓ Precision pointer slider with uniform 0.65 ± 0.15 N friction index
- ✓ Calibrated against certified steel test anvil yielding 80 ± 2 rebound index
Technical Overview & Compliance
The Langry RH225-A Mechanical Concrete Test Hammer (Type N) is a rugged, precision engineering instrument engineered for non-destructive assessment of in-situ compressive strength in hardened concrete, precast members, pavements, and massive civil infrastructure. Built with an ultra-hard aluminum alloy casing and calibrated internal precision springs, it delivers repeatable rebound measurement according to IS 13311 (Part 2), ASTM C805, and EN 12504-2.
Verified Technical Specifications
| Parameter | Specification Value |
|---|---|
| Impact Energy | 2.207 J (Type N) |
| Measuring Range | 10 – 60 MPa |
| Pointer Friction | 0.65 ± 0.15 N |
| Spring Stiffness | 785.0 ± 30.0 N/m |
| Impact Spring Working Length | 61.5 ± 0.3 mm |
| Calibration on Test Anvil | 80 ± 2 |
| Spherical Radius of Tip | 25 ± 1.0 mm |
| Applicable Standards | IS 13311-2, ASTM C805, BS 1881-202, EN 12504-2 |
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