77-0480
ing rock classification test procedures. The cradle incorporates a guide for positioning the hammer to allow for a series of readings along the length of the core Standards: ASTM D5873You can only add up to 50 products to your wishlist at a time.
Category: Rock Mechanics
Sub Category: Surface Hardness
Product Group: Rock Classification Hammer
This lightweight and portable impact hammer is used for rock classification tests. The hammer is similar to a device used for many years for strength classification tests of mass concrete. Cylindrical cores, usually NW size, are held in a horizontal position and the hammer mechanism impacted against the core to obtain rebound readings. A series of readings is taken along the length of the core to get the average rebound number.
Standards: ASTM D5873, EN 12504-2, ASTM C805
| Weight, lbs | 3 |
| Description | Rock Classification Hammer |
| Plunger | Applies pressure for hammer rebound |
| Body | Aluminum; with indicator scale |
| Rubbing Stone | Prepares test surface |
| Accuracy | Within 15 % |
| Weight | Net 3 lbs. (1.4 kg) |
• NW Rock Cradle
