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 hydraulic systems are as follows: The testing time is aztm controlled by meeting the equilibrium criteria for each Method see 9. 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.

Users of this standard are cautioned that compliance with Practice D does not in itself assure reliable results. Reliable results depend on many factors; Practice D provides a means of evaluating some of those factors.

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Hydraulic conductivity varies with varying void ratio, which changes when the effective stress changes. Strategies that may be possible when dealing with such impervious materials may include the following.

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. These hydraulic systems are as follows: 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.

ASTM D5084

These hydraulic systems are as follows:. These test methods apply to water-saturated porous materials containing virtually no air. The key criterion is that the requirements covered in Section 5 have to be met.

The key criterion is that the requirements covered in Section 5 have to be met. Temperatures outside this range may be used; however, the user would have to determine the specific gravity of mercury and R T see 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.

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

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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. In addition, they are representative of the significant digits that should generally be retained.

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.

Properly shortening the length or enlarging the cross-sectional area, or both, of the test specimen. 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 astn data to be commensurate with these considerations. Agencies that meet the criteria of Practice D are generally considered capable of competent and objective testing, sampling, inspection, etc.

However, these test methods are only intended to be used when water is the permeant liquid. Active view current version of standard. In addition, they are representative f5084 the significant digits 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.

Temperatures outside this range may be used, however, the user would have to determine the specific gravity of mercury and R T see Link to Active This link will always route to the current Active version of the standard.

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Methods A, B, and C take a longer period-of-time, from a few days to a few weeks asym on the hydraulic conductivity. 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. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as aatm of the standard.

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

By tradition in U. It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design. There are six alternate methods or hydraulic systems that may be used to measure the hydraulic conductivity.

Other items, such as use of higher hydraulic gradients, lower viscosity fluid, elimination of f5084 possible chemical gradients and bacterial growth, and strict verification of leakage, may also be considered.

Strategies that may be possible when dealing with such impervious materials may include the following: 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 d084 the current Active version of the standard. These hydraulic systems are as follows:. Historical Version s – view previous versions of standard. Tightening the temperature control.

ASTM D Standard

If the void ratio is changed, the hydraulic conductivity of the test specimen will likely change, see Appendix X2. 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. Therefore, the results should be applied to astmm situations with caution and by qualified personnel.