Posted on February 23, 2019


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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Geotechnical Laboratory

Content only available by subscription. The right to astn the electronic files of ASTM Standards is for purposes of viewing for individual use only. The concentrated load is applied through coaxial, truncated conical platens. ASTM grants you a license as follows: Register for a trial account. 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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Specimens shall be free from abrupt irregularities that can generate stress concentrations. The failure load is used to calculate the point load strength index and to estimate the uniaxial compressive strength.

When testing irregular-shaped specimens obtained by other means at least 20 specimens are selected. No items in cart.


Size and shape requirements for diametral, axial, block, or irregular lump testing are presented in the test method. When testing core or block specimens at least ten specimens are selected.

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Search book title Enter keywords for book title search. Sample Size Requirements Rock samples are grouped on the basis of both rock type and estimated strength. The electronic file may not be reproduced in any way.

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You currently cannot view this content. The point load test allows testing of rock specimens that do not meet the dimensional requirements of the uniaxial compression test.

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 cost of compressive strength tests.

There were no books found for the applied search zstm. Specimens in the form of core are preferred for a more precise classification.