ASTM D 2850 : 2025
Current
The latest, up-to-date edition.
Standard Test Method for Unconsolidated-Undrained Triaxial Compression Test on Cohesive Soils
English
15-03-2025
| Committee |
D 18
|
| DocumentType |
Test Method
|
| Pages |
7
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Current
|
| Supersedes |
1.1This test method provides data for determining undrained strength properties and stress-strain relations for cohesive soils. This test method provides for the measurement of the total stresses applied to the specimen, that is, the stresses are not corrected for pore-water pressure.
1.2This test method covers determination of the strength and stress-strain relationships of a cylindrical specimen of either intact, reconstituted, or remolded cohesive soil. Specimens are subjected to a confining pressure in a triaxial chamber. No drainage of the specimen is permitted during the application of the confining pressure or during the compression phase of the test. The specimen is axially loaded at a constant rate of axial deformation (strain controlled).
Note 1:The determination of the unconfined compressive strength of cohesive soils is covered by Test Method D2166/D2166M.
Note 2:The determination of the consolidated, undrained strength of cohesive soils with pore pressure measurement is covered by Test Method D4767.
1.3Units—The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information only and are not considered standard. Reporting of test results in units other than SI shall not be regarded as nonconformance with this test method.
1.3.1The gravitational system of inch-pound units is used when dealing with inch-pound units. In this system, the pound (lbf) represents a unit of force (weight), while the unit for mass is slugs. The slug unit is not given, unless dynamic (F = ma) calculations are involved.
1.3.2 It is common practice in the engineering/construction profession to concurrently use pounds to represent both a unit of mass (lbm) and of force (lbf). This practice implicitly combines two separate systems of units; the absolute and the gravitational systems. It is scientifically undesirable to combine the use of two separate sets of inch-pound units within a single standard. As stated, this standard includes the gravitational system of inch-pound units and does not use/present the slug unit for mass. However, the use of balances or scales recording pounds of mass (lbm) or recording density in lbm/ft3 shall not be regarded as nonconformance with this standard.
1.4All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026.
1.4.1The procedures used to specify how data are collected/recorded or calculated in this standard are regarded as the industry standard. In addition, they are representative of the significant digits that generally should 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 be commensurate with these considerations. It is beyond the scope of this standard to consider significant digits used in analysis methods for design.
1.5This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
| ASTM D 2573/D2573M : 2018 | Standard Test Method for Field Vane Shear Test in Saturated Fine-Grained Soils |
| ASTM D 3213 : 2019 | Standard Practices for Handling, Storing, and Preparing Soft Intact Marine Soil |
| ASTM D 4767 : 2011 : R2020 | Standard Test Method for Consolidated Undrained Triaxial Compression Test for Cohesive Soils |
| ASTM D 2166/D2166M : 2024 | Standard Test Method for Unconfined Compressive Strength of Cohesive Soil |
| ASTM E 2277 : 2014 : R2019 | Standard Guide for Design and Construction of Coal Ash Structural Fills |
| ASTM F 1962 : 2025 | Standard Guide for Use of Maxi-Horizontal Directional Drilling for Placement of Polyethylene Pipe or Conduit Under Obstacles, Including River Crossings |
| ASTM D 4015 : 2021 | Standard Test Methods for Modulus and Damping of Soils by Fixed-Base Resonant Column Devices |
| ASTM D 6913/D6913M : 2017 | Standard Test Methods for Particle-Size Distribution (Gradation) of Soils Using Sieve Analysis |
| ASTM D 4753 : 2024 | Standard Guide for Evaluating, Selecting, and Specifying Balances and Standard Masses for Use in Soil, Rock, and Construction Materials Testing |
| ASTM D 6913/D6913M : 2017 : R2025 | Standard Test Methods for Particle-Size Distribution (Gradation) of Soils Using Sieve Analysis |
| ASTM D 4753 : 2025 | Standard Guide for Evaluating, Selecting, and Specifying Balances and Standard Masses for Use in Soil, Rock, and Construction Materials Testing |
Access your standards online with a subscription
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.
Important note : Users cannot be edited or removed once added to your Multi user PDF.