ASTM D2850 PDF

Tutilar Specimens are subjected to a confining fluid pressure in a triaxial chamber. 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. Triaxial cell with accessories: A typical Standard triaxial system with analogue measurements includes: Installed on a PC communicating with the system over a fast Ethernet connection, the software can be used to configure the system scalibrate transducers, specify test parameters, set A typical standard triaxial system with external data acquisition system includes: A typical standard triaxial system with built-in acquisition measurement includes: Cohesive soil, lateral astk, strain-controlled loading, stress-strain relationships, total stresses, unconsolidated undrained strength, UU, triaxial, shear. The specimen is axially loaded at a constant rate of axial deformation strain controlled. More than system configurations are available depending on type of test, sample size, pressure system.

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More D This shear strength may be applied to field conditions where full drainage can occur drained conditions or where pore pressures induced by loading can be estimated, and the field stress conditions are similar to those in the test method. The precision of this test method is dependent on the competence of the personnel performing it and the suitability of the equipment and facilities used. Agencies which meet the criteria of Practice D are generally considered capable of competent testing.

Users of this test method are cautioned that compliance with Practice D does not ensure reliable testing. Reliable testing depends on several factors; Practice D provides a means of evaluating some of those factors. Scope 1. Specimens are isotropically consolidated and sheared in compression without drainage at a constant rate of axial deformation strain controlled. Generally, three specimens are tested at different effective consolidation stresses to define a strength envelope.

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 consideration of end use. It is beyond the scope of this test method to consider significant digits used in analysis methods for engineering design.

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. In this system, the pound lbf represents a unit of force weight , while 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.

Density is mass per unit volume whereas unit weight is force per unit volume. In this standard density is given only in SI units. After the density has been determined, the unit weight is calculated in SI or inch-pound units, or both.

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.

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ASTM D2850

More D This shear strength may be applied to field conditions where full drainage can occur drained conditions or where pore pressures induced by loading can be estimated, and the field stress conditions are similar to those in the test method. The precision of this test method is dependent on the competence of the personnel performing it and the suitability of the equipment and facilities used. Agencies which meet the criteria of Practice D are generally considered capable of competent testing. Users of this test method are cautioned that compliance with Practice D does not ensure reliable testing. Reliable testing depends on several factors; Practice D provides a means of evaluating some of those factors.

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ASTM D2850

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