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Rock classification hammer

ASTM D5873 | ISRM
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General description
General description
Used 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, using the ASTM rock cradle 45-D0562/A (see accessories) as shown in the picture.
Supplied complete with case.
  • Weight approx.: 1.5 kg
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Ordering info

45-D0561/C
Rock test classification hammer with low impact energy 0.735 Nm. Supplied with hard plastic carrying case.                               Conforming to ASTM D5873 and ISRM.             

45-D0561/C1
Rock test classification hammer with low impact energy 0.735 Nm. Supplied complete with traceable calibration certificate and hard plastic carrying case.                                             
Conforming to ASTM D5873 and ISRM.    

Accessories

ASTM rock cradle

45-D0562/A 
ASTM rock cradle
Universal model, can hold rock core samples from EX (21.46 mm) to NX size (54.74 mm dia.). The cradle comprises a vertical hammer guide fit to a steel plate of minimum mass conforming to ASTM D5873, and a magnetic “V” block that can be easily fit to the steel plate.
  • Dimensions: 220 mm dia. x 420 mm high approx.
  • Weight approx.: 27 kg
 
Calibration anvil

Standards: EN 12504-2, ASTM C805, ASTM D5873

58-C0184 
Calibration anvil
Used for calibration of concrete test hammer for concrete (model 58-C0181/C and 58-C0181/DGT) and rock classification hammer (model 45-D0561/C). Made from special alloy steel and supplied complete with traceable hardness certificate. It is essential for the periodical laboratory verification of the rock classification hammer.
  • Dimensions: 150 mm dia. x 230 mm height
  • Weight approx.: 16 kg  

45-D0561/C2
Spare abrasion stone for testing hammer    



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