• ASTM D 2435 : 1996

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Standard Test Method for One-Dimensional Consolidation Properties of Soils

    Available format(s): 

    Superseded date:  11-11-2014

    Language(s): 

    Published date:  01-01-1996

    Publisher:  American Society for Testing and Materials

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    1.1 This test method covers procedures for determining the magnitude and rate of consolidation of soil when it is restrained laterally and drained axially while subjected to incrementally applied controlled-stress loading. Two alternative procedures are provided as follows:

    1.1.1 Test Method A -This test method is performed with constant load increment duration of 24 h, or multiples thereof. Time-deformation readings are required on a minimum of two load increments.

    1.1.2 Test Method B-Time-deformation readings are required on all load increments. Successive load increments are applied after 100% primary consolidation is reached, or at constant time increments as described in Test Method A.

    Note 1-The determination of the rate and magnitude of consolidation of soil when it is subjected to controlled-strain loading is covered by Test Method D 4186.

    1.2 This test method is most commonly performed on undisturbed samples of fine grained soils naturally sedimented in water, however, the basic test procedure is applicable, as well, to specimens of compacted soils and undisturbed samples of soils formed by other processes such as weathering or chemical alteration. Evaluation techniques specified in this test method are generally applicable to soils naturally sedimented in water. Tests performed on other soils such as compacted and residual (weathered or chemically altered) soils may require special evaluation techniques.

    1.3 It shall be the responsibility of the agency requesting this test to specify the magnitude and sequence of each load increment, including the location of a rebound cycle, if required, and, for Test Method A, the load increments for which time-deformation readings are desired.

    Note 2-Time-deformation readings are required to determine the time for completion of primary consolidation and for evaluating the coefficient of consolidation, cv . Since cv varies with stress level and load increment (loading or unloading), the load increments with timed readings must be selected with specific reference to the individual project. Alternatively, the requesting agency may specify Test Method B wherein the time-deformation readings are taken on all load increments.

    1.4 The values stated in SI units are to be regarded as the standard. The values stated in inch-pound units are approximate and given for guidance only. Reporting of test results in units other than SI shall not be regarded as nonconformance with this test method.

    1.4.1 In the engineering profession it is customary practice to use, interchangeably, units representing both mass and force, unless dynamic calculations ( F = Ma ) are involved. This implicitly combines two separate systems of units, that is, the absolute system and the gravimetric system. It is scientifically undesirable to combine two separate systems within a single standard. This test method has been written using SI units; however, inch-pound conversions are given in the gravimetric system, where the pound (lbf) represents a unit of force (weight). The use of balances or scales recording pounds of mass (lbm), or the recording of density in lb/ft should not be regarded as nonconformance with this test method.

    1.5 This 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 and health practices and determine the applicability of regulatory limitations prior to use.

    General Product Information - (Show below) - (Hide below)

    Committee D 18
    Document Type Test Method
    Publisher American Society for Testing and Materials
    Status Superseded
    Superseded By

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    ASTM D 3080/D3080M : 2011 Standard Test Method for Direct Shear Test of Soils Under Consolidated Drained Conditions (Withdrawn 2020)
    ASTM D 4767 : 2011 Standard Test Method for Consolidated Undrained Triaxial Compression Test for Cohesive Soils
    ASTM D 6528 : 2017 Standard Test Method for Consolidated Undrained Direct Simple Shear Testing of Fine Grain Soils
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    ASTM D 7100 : 2011 Standard Test Method for Hydraulic Conductivity Compatibility Testing of Soils with Aqueous Solutions
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