ASTM D5084 PDF

GeoTesting Express is a provider of Soil Testing Services – ASTM D, Standard Test Methods for Measurement of Hydraulic Conductivity of Saturated Porous. This standard is issued under the fixed designation D ; the number 1 This standard is under the jurisdiction of ASTM Committee D18 on Soil and. Using low hydraulic gradient is time- consuming. ▫ ASTM D suggests a maximum hydraulic gradient of 30 for soils with k ≤ 1 x cm/s.

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These test methods apply to water-saturated porous materials containing virtually no air. Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing, sampling, inspection, etc.

Other strategies, such as using higher viscosity fluid or properly decreasing the cross-sectional area of the test specimen, or both, may also be possible. Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors.

Active view current version of standard. Strategies that may be possible when dealing with such impervious materials may include the following: In addition, they are representative of the significant digits that should generally be retained. Tightening the temperature control. 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.

ASTM D5084

Link to Active This link will always route to the current Active version of the standard. The adoption of unsteady state measurements by using high-accuracy equipment along with the rigorous analyses for determining the hydraulic parameters this approach reduces testing duration according to Zhang et al.

To determine the relationship between hydraulic conductivity and void ratio, the hydraulic conductivity test would have to be repeated at different effective stresses.

The key criterion is that the requirements covered in Section 5 have to be met.

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The testing time is ultimately controlled by meeting the equilibrium criteria for each Method see 9. These hydraulic systems are as follows: Historical Version s – view previous versions of standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The inch-pound units given in parentheses are mathematical conversions, which are provided for information purposes only and are not considered standard, unless specifically stated as standard, such as 0.

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Temperatures outside this range may be used, however, the user would have to determine the specific gravity of mercury and R T see There are six alternate methods or hydraulic systems that may be used to measure the hydraulic conductivity. Temperatures outside this range may be used; however, the user would have to determine the specific gravity of mercury and R T see Other strategies, such as using higher viscosity fluid or properly decreasing the cross-sectional area of the test specimen, or both, may also be possible.

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.

ASTM D Standard

The quality of the result produced by this standard is dependent asym the competence of the personnel performing it ast the suitability of the equipment and facilities used. Link to Active This link will always route to the current Active version of the standard.

Strategies that may be possible when dealing with such impervious materials may include the following. There are six alternate methods or hydraulic systems, that may be used to measure the hydraulic conductivity.

Experience has sometimes shown that hydraulic conductivities measured on small test specimens are not necessarily the same as larger-scale values.

Other items, such as use of higher hydraulic gradients, lower viscosity fluid, elimination of any possible chemical gradients and bacterial growth, and strict verification of leakage, may also be considered. By tradition in U.

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. The procedures used do not consider material variation, purpose for obtaining the data, special purpose studies, or any c5084 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.

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Other approaches, such as use of higher hydraulic gradients, lower viscosity fluid, elimination of any s5084 chemical gradients and bacterial growth, and strict verification of leakage, may also be considered. These hydraulic systems are as follows:. These hydraulic systems are as follows: However, these test methods are only intended to be used when water is the permeant liquid.

Users of this standard are cautioned that compliance with Practice D does not in itself assure reliable results. The key criterion is that the requirements covered in Section 5 have to be met.

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If the void ratio is changed, the hydraulic conductivity of the test specimen will likely change, see Appendix X2. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are f5084 provided as part of the standard.

It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design. Therefore, the results should be applied to field situations with caution and by qualified personnel. Typically a test can be performed using Methods D, E, or F within two to three days.

Properly shortening the length or enlarging the cross-sectional area, or both, of the test specimen. It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design.

If the confining stress is less than the swell pressure, anomalous flow conditions my occur; for asmt, mercury column s move in the wrong direction.