Doyen Concrete Test Hammer HT225.
The Doyen Concrete Test Hammer HT225 is a concrete test hammer, also called a concrete rebound hammer or Swiss hammer suitable for non-destructive measurements of surface hardness and compression strength. Suitable for use with concrete, rock and building materials, this manufacturer-calibrated manual rebound hammer is economical, practical and easy to use.
The concrete quality is judged mainly on the basis of compressive strength. This is due to compressive strength being directly responsible for the structural behaviour and durability of concrete constructions.
- Used for the determination of the consistency of freshly mixed concrete.
- Suitable where the maximum size of the aggregate does not exceed 38mm.
- Kg/cm², psi, and MPa conversion tables on the back of the instrument and in the user manual.