Rock Classification Hammer
Shanghai Civil & Road Instrument Co., Ltd.- Type：Strength Classification Tests
- Weight：1.5kg
- Standard：ASTM D5873, En 12504-2, ASTM C805
- Transport Package：ABS Plastic Case
- Specification：31x19x9cm
- Origin：China
Base Info
- Model NO.：ZC4
- HS Code：9031809090
Description
Basic Info.
Model NO. ZC4 HS Code 9031809090Product Description
Rock classification hammer
ASTM D5873Used to measure the rebound index on rock cores and samples. The device is simple, easy to use, and is similar to the one used for testing concrete. The level of impact energy only is different: 0.735 Nm. Rock cores are positioned horizontally and the rebound index is obtained from the average of several measurements performed perpendicularly to the longitudinal axis,
Supplied complete with case.
Weight approx.: 1.5 kg
| Normal Impact energy | 0.735 J |
| Rebound hammer stroke | 75 mm |
| Static friction between pointer slider and shaft | 0.4-0.6N |
| Average rebound values of calibration on steel anvil should be | 74±2 |
| Size | Ф60*280mm |
| Net weight | 1kg |
