ASTM D5873 PDF

GeoTesting Express is a provider of Rock Testing Services – ASTM D, Standard Test Method for Determination of Rock Hardness by Rebound Hammer . ASTM D Related standards: C, D, D, D, D, D, D Standard Test Method for Determination of Rock Hardness by Rebound. ASTM D Standard Test Method for Determination of Rock Hardness by Rebound Hammer Method. standard by ASTM International.

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Earlier recommendations for rock mechanics applications were only for hammers with an impact energy of 0.

Historical Version s – view previous versions of standard. In addition, they are representative of the significant digits that generally should be retained.

ASTM D – 05 Standard Test Method for Determination of Rock Hardness by Rebound Hammer Method

For the same rock or material, rebound numbers obtained from different hammers are not comparable. Link to Active This link will always d587 to the current Active version of the standard. No other units of measurement are included in this standard. Users of this test method are cautioned that compliance with Practice D does not in itself assure reliable results.

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It is beyond the asym of this standard to consider significant digits used in analytical methods for engineering design. Accordingly, this limitation should be kept in mind when selecting a hammer type.

Note 2 — The quality of the result produced by this test method is dependent on the competence of the personnel performing it and the suitability of the equipment and facilities used. For a given plunger tip diameter and radius of curvature, the impact energy of the rebound hammer determines its range of applicability. These applications include, for examples, the prediction of penetration rates for tunnel boring machines, determination of rock quality for construction purposes, grouping of test specimens, and prediction of hydraulic erodibility of rock.

Care should be taken when testing such rocks and conglomerates as the rebound values will vary between testing a large piece of aggregate versus softer matrix of the conglomerate. Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors. 5d873 that meet the criteria of Practice D are generally considered capable of competent and objective testing and sampling.

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Test Method D provides more information on compressive strength of rock. Hammers with energies above 0.

Work Item s – proposed revisions of this standard. This test method applies only to hammers with an impact energy not to exceed 0.

ASTM D5873

It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Note 1 — Several types of rebound hammers are commercially available to accommodate testing of various sizes and types of rock.