GeoTesting Express is a provider of Rock Testing Services – ASTM D, Standard Test Method for Unconfined Compressive Strength of Intact Rock Core . All the Controls products ASTM D standard. Enter now!. ASTM D “Standard Test Method for Unconfined ASTM D “ Standard Test Methods for Compressive Strength and.

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When testing irregular-shaped specimens obtained by other means at least 20 specimens are selected. Specimens shall be free from abrupt irregularities that can generate stress concentrations. The concentrated load is applied through coaxial, truncated conical platens.

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Specimens in the form of core are preferred for a more precise classification. Register for a trial account. No items in cart.

Enter your account email address to request a password reset: No further reproductions authorized. The point load test allows testing of rock specimens that astj not meet the dimensional requirements of the uniaxial compression test.


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The uniaxial compression test see ASTM D is used to determine compressive strength of rock specimens, but it is a time-consuming and expensive test that requires specimen preparation.

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Sample Size Requirements Rock samples are grouped on the basis of both rock type and estimated strength. Please login to your authorized staff account to use this feature. When testing core or block specimens at least ten specimens are selected.

Remember me for one month. Enter your personal account email address to request a password reset: Content only available by subscription. Size and shape requirements for diametral, axial, block, or irregular lump testing are presented in the test method. Print 1 asstm 3 4 5 page sstarting from page current page.

The failure load is used to calculate the point load strength e2938 and to estimate the uniaxial compressive strength. In addition the electronic files may not be downloaded or distributed elsewhere over r2938 networks or otherwise.


When extensive testing is required for preliminary and reconnaissance information, alternative tests such as the point load test can be used in the field or laboratory to reduce the time and ast, of compressive strength tests. The electronic file may not be reproduced in any way. Please sign into an account with a subscription to this content, or email for help at support madcad.

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