TR-0562 Rock Classification Hammer together with TR-0565 NW Rock Cradle is an easy-to-use apparatus for measuring the rebound index on rock cores and samples. The level of impact energy is 0.74 Nm. The sample is positioned horizontally and the rebound index is calculated through the average value, determined after several measurements, which are performed perpendicularly to the longitudinal axis of the sample. The Rock Classification Hammer is supplied complete with carrying case.
TR-0565 Rock Cradle apparatus consists of a universal V shaped sample holder unit suitable for all standard rock core specimen sizes from EX to NX (21.46 mm to 54.74 mm dia.) and a V shaped guide attached to the core holder to keep the rebound hammer perpendicular to the surface of the test specimen.
- ASTM D 5873