ASTM D5101-01
(Test Method)Standard Test Method for Measuring the Soil-Geotextile System Clogging Potential by the Gradient Ratio
Standard Test Method for Measuring the Soil-Geotextile System Clogging Potential by the Gradient Ratio
SCOPE
1.1 This test method covers a performance test applicable for determining the soil-geotextile system permeability and clogging behavior under unidirectional flow conditions.
1.2 The values stated in SI units are to be regarded as standard. The values in parentheses are for information only.
1.3 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 appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:D5101–01
Standard Test Method for
Measuring the Soil-Geotextile System Clogging Potential by
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the Gradient Ratio
This standard is issued under the fixed designation D 5101; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.4 hydraulic gradient, i, s (D)—the loss of hydraulic
head per unit distance of flow, dH/dL.
1.1 This test method covers a performance test applicable
3.1.5 For definitions of other textile terms, refer to Termi-
for determining the soil-geotextile system permeability and
nology D 123. For definitions of other terms related to geotex-
clogging behavior for cohesionless soils under unidirectional
tiles, refer to Terminology D 4439 and Terminology D 653.
flow conditions.
3.2 Acronyms:Symbols and Acronyms:
1.2 The values stated in SI units are to be regarded as
3.2.1 CO —the chemical formula for carbon dioxide gas.
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standard. The values in parentheses are for information only.
3.2.2 CHD—the acronym for constant head device.
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Summary of Test Method
responsibility of the user of this standard to establish appro-
4.1 This test method requires setting up a cylindrical, clear
priate safety and health practices and determine the applica-
plastic permeameter (see Fig. 1 and Fig. 2) with a geotextile
bility of regulatory limitations prior to use.
and soil, and passing water through this system by applying
2. Referenced Documents various differential heads. Measurements of differential heads
and flow rates are taken at different time intervals to determine
2.1 ASTM Standards:
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hydraulic gradients. The following test procedure describes
D 123 Terminology Relating to Textiles
equipment needed, the testing procedures, and calculations.
D 653 Terminology Relating to Soil, Rock, and Contained
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Fluids
5. Significance and Use
2
D 737 Test Method forAir Permeability of Textile Fabrics
4 5.1 This test method is recommended for evaluating the
D 4354 Practice for Sampling of Geosynthetics for Testing
4 performance of various soil-geotextile systems under con-
D 4439 Terminology for Geosynthetics
trolled test conditions. Gradient ratio values obtained may be
3. Terminology plotted and used as an indication of the soil-geotextile system
clogging potential and permeability. This test method is not
3.1 Definitions:
appropriate for initial comparison or acceptance testing of
3.1.1 clogging potential, n—in geotextiles, the tendency for
various geotextiles. The test method is intended to evaluate
a given fabric to lose permeability due to soil particles that
geotextile performance with specific on-site soils. It is im-
have either lodged in the fabric openings or have built up a
proper to utilize the test results for job specifications or
restrictive layer on the surface of the fabric.
manufacturers’ certifications.
3.1.2 geotextile, n—a permeable geosynthetic comprised
5.2 It is important to note the changes in gradient ratio
solely of textiles.
values with time versus the different system hydraulic gradi-
3.1.3 gradient ratio, n—in geotextiles, the ratio of the
ents, and the changes in the rate of flow through the system
hydraulic gradient through a soil-geotextile system to the
(see Section 11 and Annex A1.).
hydraulic gradient through the soil alone.
6. Apparatus and Supplies
6.1 Soil-Geotextile Permeameter—(three-piece unit)
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This test method is under the jurisdiction of ASTM Committee D35 on
equipped with support stand, soil-geotextile support screen,
Geosynthetics and is the direct responsibility of Subcommittee D35.03 on Perme-
piping barriers (caulk), clamping brackets, and plastic tubing
ability and Filtration.
Current edition approved July 10, 2001. Published October 2001. Originally
(see Fig. 2). Both 100-mm (4-in.) and 150-mm (6-in.) diameter
published as D 5101 – 90. Last previous edition D 5101 – 00.
permeameters are described.
2
Annual Book of ASTM Standards, Vol 07.01.
3 6.2 Two Constant Water Head Devices, one mounted on a
Annual Book of ASTM Standards, Vol 04.08.
4
Annual Book of ASTM Standards, Vol 04.13. jack stand (adjustable) and one stationary (Fig. 3).
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D5101–01
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6.20 Wooden rod, 20-mm ( ⁄4– in.) diameter by 150 mm (6
in.) long.
7. Sampling and Test Specimens
7.1 Lot Sample and Laboratory Sample—Take a lot sample
and laboratory samples as directed in Practice D 4354. For
laborat
...
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