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Lab Services: Rock testing

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Test Method Title

Standard Test Method for Determination of Rock Hardness by Rebound Hammer Method

Reference Number

ASTM D5873

Material

Rock

Test Property

Hardness

Description of Test

The test uses a portable, spring loaded, pistontype, steel hammer used to measure the hardness of rock in the field or laboratory.The rebound hardness method provides a means for rapid classification of the hardness of rock during site characterization for engineering, design, and construction purposes, and geotechnical mapping of large underground openings in rock. Applications include the prediction of penetration rates for tunnel boring machines, determination of rock quality for construction purposes and grouping of test specimens.

Preferred Test Sample Size

Rock core specimens

Number of Test Specimens

1

Test Specimen Size

A minimum of 6 in of core

Keywords

Schmidt Hammer, Rock Hardness, Rebound Hardness

For more information, contact GeoTesting Express:



Atlanta

770.645.6575


Boston

978.635.0424


Chicago

224.676.1371


New York

212.566.6630



info@geotesting.com

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