Designation: D/DM – 11Standard Test Methods for One-Dimensional Consolidation Properties of Soils Using Incremental Lo. GeoTesting Express is a provider of Soil Testing Services – ASTM D, Standard Test Method for One-Dimensional Consolidation Properties of Soils. Standard Test Method for One-Dimension Consolidation Properties of Soil Using Incremental Loading.
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Your basket is empty. Traditionally, the axial stress is doubled for each increment resulting in a load increment ratio of 1. However, the time rate of deformation is very sensitive to degree of saturation r2435 caution must be exercised regarding estimates for duration of settlements when partially saturated conditions prevail.
Careful selection and preparation of test specimens is required to reduce the potential of disturbance effects.
ASTM D2435/D2435M – 11
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 Reliable testing depends on many factors, and Practice D provides a means of evaluation some of these factors.
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We use d2453 to make our website easier to use and to better understand your needs. Consolidation test results are dependent upon the duration of each load increment.
The test results can be greatly affected by sample disturbance. Alternative techniques to estimate the preconsolidation stress may be used when agreed to by the requesting agency and still be in conformance with these test methods.
How one applies the results obtained using this standard is beyond its scope. Agencies that meet the criteria of Practice D generally are considered capable of competent and objective testing. Click to learn more. Two alternative procedures are provided as follows:. This test method provides the compression curve with explicit data to account for secondary compression, the coefficient of consolidation for saturated materials, and the rate of secondary compression.
Most intact samples taken from below the water table will be saturated. Inundation of the test specimen does not significantly change the degree of saturation of the test specimen but rather provides boundary water to eliminate negative pore pressure associated with sampling and prevents evaporation during the test.
Estimates of this type are of key importance in the design of engineered structures and the evaluation of their performance. Please download Chrome or Firefox or view our browser tips.
ASTM D Standard
Historical Version s – view previous versions of standard. Tests performed on other soils such as compacted and residual weathered or chemically altered soils may require special evaluation techniques. In particular, the rate of consolidation interpretation of the time curves is only applicable d24355 fully saturated specimens.
Consolidation test results are dependent on the magnitude of the load increments. It is the responsibility of the user of this standard satm 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 but are not provided as part of the standard. Compressibility, Compression curves, Consolidation, Consolidation coefficient, Consolidation test, Consolidometer, Preconsolidation pressure, Preconsolidation stress, Primary consolidation, Rebound, Secondary compression, Settlement, Swelling: You may experience issues atm this site in Internet Explorer 9, 10 or Note 3—Notwithstanding the statement on precision and bias contained in this standard, the precision of this test method is dependent on the competence of the personnel performing the test and suitability of the equipment and facilities used.
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This test method provides only the compression curve of the specimen and the results combine both primary consolidation and secondary compression deformations. The faster, easier way to work with standards. These test methods specify procedures for two techniques Method A and Method Bhowever alternative techniques may be used when agreed to by the requesting agency and still be in conformance with these test methods.
Two alternative procedures are provided astk follows: The analysis is based upon the following assumptions:. Time-deformation readings are required on a minimum of two load increments. It is scientifically undesirable to combine two separate systems within a single standard.
Astmm Similar Items This product falls into the following categories. The compressibility of soil particles and pore water is negligible compared to the compressibility of the soil skeleton. Users of this test method are cautioned that compliance with Practice D does not assure reliable testing.