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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The failure load is used to calculate the point load strength index and to estimate the uniaxial compressive strength. The concentrated load is applied through coaxial, truncated conical platens.

The right to access the electronic files of ASTM Standards is for purposes of viewing for individual use only. 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. Register for a trial account.

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In addition the electronic files may not be downloaded or distributed elsewhere over computer networks or otherwise. ASTM grants you a license as follows: No items in cart.


The electronic file may not be reproduced in any way. Are you sure you want to empty the cart? Size and shape requirements for diametral, axial, block, or irregular lump testing are presented in the test method.

Please login to your authorized staff account to use this feature. Specimens shall be free from abrupt irregularities that can generate stress concentrations. The point load test allows testing of rock specimens that do not atsm the dimensional requirements of the uniaxial compression test. When testing irregular-shaped specimens obtained by other means at least 20 specimens are selected.

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No further reproductions authorized. When extensive testing is required for preliminary and reconnaissance information, alternative tests such as the point load test can be qstm in the field or laboratory to reduce the time and cost of compressive strength tests. Specimens in the form of core are preferred for a more precise classification.


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When testing core or block specimens at least ten specimens are selected.

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Content only available by subscription. Please sign into an account with a subscription to this content, or email for help at support madcad. Enter your personal account email address to request a password reset: Sample Size Requirements Rock samples are grouped on the basis of both rock type and estimated strength. Enter your account email address to request a password reset:

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