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Designation: D – Standard Test Method for ASTM Standards: 2 1 This test method is under the jurisdiction of ASTM Committee D18 on Soil and. Page 1. ASTM D Unconfined Compressive Strength. Page 2. Page 3. Sample Type: Remarks: Unconfined Compressive Strength. (ASTM D – 06). Borehole No.: . Jan TCPL/SimonetteLL GrandePrairie.

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In the unconfined compression test, the sample si placed in the loading machine between the lower and upper plates.

The primary purpose of the Unconfined Compression Test is to quickly determine a measure of the unconfined compressive strength of rocks or fine-grained soils that possess sufficient cohesion to permit testing in the unconfined state. The determination of the unconsolidated, undrained strength of cohesive soils with lateral confinement is covered c2166 Test Method D Copyright – Geotechdata. Link to Active This link will always route to the current D2616 version of the standard.

Unconfined Compression Test –

In general, The Awtm can be conducted on rock samples or on undisturbed, reconstituted or compacted cohesive soil sample. Unconfined Compression Test Geotechdata.


Free quote for buying Unconfined Compression Test equipment: Active view current version of standard. Dry and crumbly soils, fissured or varved materials, silts, peats, and sands cannot be tested with this method to obtain valid unconfined compression strength values.

Detailed description of Unconfined Compression Test, Chap 7. In addition, they are representative of the significant digits that should generally be retained.

ASTM D 2166 – 06 Standard Test Method for Unconfined Compressive Strength of Cohesive Soil

Can you edit this page? Pricing information and quote request on Geotechgate. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

As for the results, the axial stress is usually plotted versus the axial strain. Note 1 The determination of the unconsolidated, undrained strength of cohesive soils with lateral confinement is covered by Test Method D The sample is then removed for measurement of the water content.

This standard does not purport to address all of the safety problems, if any, associated with its use.


This measure is then used to calculate the unconsolidated undrained shear strength of the clay under unconfined conditions. Unconfined Compression Test UCT is a simple laboratory testing method to assess the mechanical properties of rocks and asym soils.

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 used in analysis methods for engineering design.

The values stated in inch-pound units are approximate. Principles of Unconfined Compression Test, Chap 7.

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. Send us an email to editor geotechdata.