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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Users of this standard are cautioned that compliance with Practice D does not in itself assure reliable results. 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.

Link to Active This link will always route to the current Active version of the standard.

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The key criterion is that the requirements covered in Section 5 have to be met. Methods A, B, and C take a longer period-of-time, from a few days to a few weeks depending on the hydraulic conductivity.

Permeation with other liquids, such as chemical wastes, can be accomplished using procedures similar to those d504 in these test methods. It is beyond the scope of this standard to consider d5804 digits used in analysis methods for engineering design.

ASTM D5084

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 d084. Other approaches, 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.

It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design. Reliable results wstm on many factors; Practice D provides a means of evaluating some of those factors.

In addition, they are representative of the significant digits that should generally be retained. By tradition in U. The key criterion is that the requirements covered in Section 5 have to be met. Hydraulic conductivity varies with varying void ratio, which changes when the effective stress changes.

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If the confining stress is less than the swell pressure, anomalous flow conditions my occur; for example, mercury column s move in the wrong direction. These test methods apply to water-saturated porous materials containing virtually no air.

In addition, they are representative of the significant wstm that should generally 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.

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. Typically a test can be performed using Methods D, E, or F within two to three days.

Strategies that may be possible when dealing with such impervious materials may include the following. Strategies that may be possible when dealing with such impervious materials may include the following: 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.

Link to Active This link will always route to the current Active version of the standard. Therefore, the results should be aetm to field situations with caution and by qualified personnel. These hydraulic systems are as follows:. However, these test methods are only intended to be used when water is the permeant liquid. 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 not provided as part of the standard. These hydraulic systems are as follows: Historical Asttm s – view previous versions of standard.

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These hydraulic systems are as follows:. The quality of the result produced by this standard is dependent of the competence of the personnel performing it and the suitability of the equipment and facilities used.

ASTM D Standard

The adoption of unsteady state measurements by using high-accuracy equipment d50084 with the rigorous analyses for determining the hydraulic parameters this approach reduces testing duration according to Zhang et al. Active view current version of standard. Tightening the temperature control. Temperatures outside aatm 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 aastm to measure the hydraulic conductivity.

To determine the relationship between hydraulic conductivity and void ratio, the hydraulic conductivity test would have to be repeated at different effective stresses. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

F5084 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. Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing, sampling, inspection, etc. Properly shortening the length or enlarging the cross-sectional area, or d0584, of the test specimen.

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

There are six alternate methods or hydraulic systems, that may be used to measure the hydraulic conductivity. These hydraulic systems are as follows: 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 testing time is ultimately controlled by meeting the equilibrium criteria for each Method see 9.