Standard Test Methods for Measurement of Hydraulic Conductivity of Saturated Porous Materials Using a Flexible Wall Permeameter

SCOPE
1.1 These test methods cover laboratory measurement of the hydraulic conductivity (also referred to as coefficient of permeability) of water-saturated porous materials with a flexible wall permeameter at temperatures between about 15 and 30oC (59 and 86oF). Temperatures outside this range may be used, however, the user would have to determine the specific gravity of mercury and RT (see 10.3) at those temperatures using data from  Handbook of Chemistry and Physics. There are six alternate methods or hydraulic systems, that may be used to measure the hydraulic conductivity. These hydraulic systems are as follows:
1.1.1 Method A—Constant Head
1.1.2 Method B—Falling Head, constant tailwater elevation
1.1.3 Method C—Falling Head, rising tailwater elevation
1.1.4 Method D—Constant Rate of Flow
1.1.5 Method E—Constant Volume-Constant Head (by mercury)
1.1.6 Method F—Constant Volume-Falling Head (by mercury), rising tailwater elevation
1.2 These test methods may be utilized on all specimen types (undisturbed, reconstituted, remolded, compacted, etc.) that have a hydraulic conductivity less than about 1 X 10-6 m/s (1 X 10-4 cm/s), providing the head loss requirements of  are met. For the constant-volume methods, the hydraulic conductivity typically has to be less than about 1 X 10-7 m/s.
1.2.1 If the hydraulic conductivity is greater than about 1 X 10-6 m/s, but not more than about 1 X 10-5 m/s; then the size of the hydraulic tubing needs to be increased along with the porosity of the porous end pieces. 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. The key criterion is that the requirements covered in Section 5 have to be met.
1.2.2 If the hydraulic conductivity is less than about 1 X 10-10 m/s, then standard hydraulic systems and temperature environments will typically not suffice. Strategies that may be possible when dealing with such impervious materials may include the following. Tightening the temperature control. 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. (1)). Properly shortening the length or enlarging the cross-sectional area, or both, of the test specimen. 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.
1.3 The hydraulic conductivity of materials with hydraulic conductivities greater than 1 X 10-5 m/s may be determined by Test Method D2434.
1.4 All observed and calculated values shall conform to the guide for significant digits and rounding established in Practice D6026.
1.4.1 The procedures used to specify how data are collected/recorded and calculated in this standard are regarded as the industry standard. In addition, they are representative of 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. It is beyond the scope of this standard to consider significant digits used in analysis methods for engineering design.
1.5 The values stated in SI units are to be regarded as the standard, unless other units are specifically given. By tradition in U.S. practice, hydraulic conductivity is reported in centimeters per second, although the common SI units for hydraulic conductivity is meters per second.
1.6 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 a...

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ASTM D5084-00e1 - Standard Test Methods for Measurement of Hydraulic Conductivity of Saturated Porous Materials Using a Flexible Wall Permeameter
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information.
e1
Designation: D 5084 – 00
Standard Test Methods for
Measurement of Hydraulic Conductivity of Saturated Porous
1
Materials Using a Flexible Wall Permeameter
This standard is issued under the fixed designation D5084; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1
e NOTE—Figure 2 was corrected editorially in January 2002.
1. Scope* possible. The key criterion is that the requirements covered in
Section 5 have to be met.
1.1 Thesetestmethodscoverlaboratorymeasurementofthe
1.2.2 If the hydraulic conductivity is less than about
hydraulic conductivity (also referred to as coeffıcient of per-
−10
1 310 m/s, then standard hydraulic systems and tempera-
meability) of water-saturated porous materials with a flexible
tureenvironmentswilltypicallynotsuffice.Strategiesthatmay
wall permeameter at temperatures between about 15 and 30°C
be possible when dealing with such impervious materials may
(59 and 86°F). Temperatures outside this range may be used,
include the following. Tightening the temperature control. The
however, the user would have to determine the specific gravity
adoption of unsteady state measurements by using high-
of mercury and R (see 10.3) at those temperatures using data
T
accuracy equipment along with the rigorous analyses for
from Handbook of Chemistry and Physics. There are six
determining the hydraulic parameters (this approach reduces
alternate methods or hydraulic systems, that may be used to
2
testing duration according to Zhang et al. (1) ). Properly
measure the hydraulic conductivity. These hydraulic systems
shortening the length or enlarging the cross-sectional area, or
are as follows:
both, of the test specimen. Other items, such as use of higher
1.1.1 Method A—Constant Head
hydraulic gradients, lower viscosity fluid, elimination of any
1.1.2 Method B—Falling Head, constant tailwater elevation
possible chemical gradients and bacterial growth, and strict
1.1.3 Method C—Falling Head, rising tailwater elevation
verification of leakage, may also be considered.
1.1.4 Method D—Constant Rate of Flow
1.3 The hydraulic conductivity of materials with hydraulic
1.1.5 Method E—Constant Volume–Constant Head (by
−5
conductivitiesgreaterthan1 310 m/smaybedeterminedby
mercury)
Test Method D2434.
1.1.6 Method F—Constant Volume–Falling Head (by mer-
1.4 All observed and calculated values shall conform to the
cury), rising tailwater elevation
guideforsignificantdigitsandroundingestablishedinPractice
1.2 These test methods may be utilized on all specimen
D6026.
types (undisturbed, reconstituted, remolded, compacted, etc.)
−6
1.4.1 Theproceduresusedtospecifyhowdataarecollected/
thathaveahydraulicconductivitylessthanabout1 310 m/s
−4
recorded and calculated in this standard are regarded as the
(1 310 cm/s), providing the head loss requirements of 5.2.3
industry standard. In addition, they are representative of the
are met. For the constant-volume methods, the hydraulic
−7
significant digits that should generally be retained. The proce-
conductivity typically has to be less than about 1 310 m/s.
dures used do not consider material variation, purpose for
1.2.1 If the hydraulic conductivity is greater than about
−6 −5
obtaining the data, special purpose studies, or any consider-
1 310 m/s, but not more than about 1 310 m/s; then the
ations for the user’s objectives; and it is common practice to
size of the hydraulic tubing needs to be increased along with
increase or reduce significant digits of reported data to be
the porosity of the porous end pieces. Other strategies, such as
commensuratewiththeseconsiderations.Itisbeyondthescope
using higher viscosity fluid or properly decreasing the cross-
of this standard to consider significant digits used in analysis
sectional area of the test specimen, or both, may also be
methods for engineering design.
1
This standard is under the jurisdiction of ASTM Committee D18 on Soil and
Rock and is the direct responsibility of Subcommittee D18.04 on Hydrologic
Properties of Soil and Rocks.
2
Current edition approved Sept. 10, 2000. Published January 2001. Originally The boldface numbers in parentheses refer to the list of references appended to
published as D5084–90. Last previous edition D5084–90. this standard.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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