This standard is issued under the fixed designation D/DM; the 1 This test method is under the jurisdiction of ASTM Committee D18 on Soil and. GeoTesting Express is a provider of Soil Testing Services – ASTM D, Standard Test Method for Unconfined Compressive Strength of Cohesive Soil. Page 1. ASTM D Unconfined Compressive Strength. Page 2. Page 3.

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Historical Version s – view previous versions of standard.

ASTM D / DM – 13 Standard Test Method for Unconfined Compressive Strength of Cohesive Soil

Also, unsaturated soils will usually exhibit different shear strengths when tested in accordance with Test Method D This method of determining sensitivity is suitable only for soils that can retain a stable specimen shape in the remolded state. For soils that will not retain a stable shape, a d21666 shear test or Test Method D can be used to determine sensitivity. The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used.


Users of this standard are cautioned that compliance with Practice D does not in itself ensure reliable results.

D266 results depend on many factors; Practice D provides a means of evaluating some of those factors. Dry and crumbly soils, fissured or varved materials, silts, peats, and sands cannot be tested with this method to obtain valid unconfined compression satm values.

The determination of the unconsolidated, undrained strength of cohesive soils with lateral confinement is covered by Test Method D In addition, they are representative of the significant digits that should generally be retained.

The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any considerations for the user’s objectives; and it is common practice to increase or reduce significant digits of reported data to commensurate with these considerations.

It is beyond the scope of this test method to consider significant digits astk in analysis methods for engineering design. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently wstm the other.

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Combining values from the two systems may result in non-conformance with the standard. In this system, the pound lbf represents a unit of force weightwhile the unit for mass is slugs.

This implicitly combines two separate systems of units; that is, the absolute system and the gravitational system. It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single standard.

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 v2166 are not provided as part of the standard.

Link to Active This link will always route to the current Active version of the standard.