ASTM D6244-98
(Test Method)Standard Test Method for Vertical Compression of Geocomposite Pavement Panel Drains
Standard Test Method for Vertical Compression of Geocomposite Pavement Panel Drains
SCOPE
1.1 This test method evaluates vertical strain and core area change of geocomposite pavement panel drains under vertical loading.
1.2 The values as stated in SI units are to be regarded as the standard. The values given 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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
Designation: D 6244 – 98
Standard Test Method for
Vertical Compression of Geocomposite Pavement Panel
Drains
This standard is issued under the fixed designation D 6244; 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 any other geotechnical engineering related materials as an
integral part of an manmade project, structure, or system (see
1.1 This test method evaluates vertical strain and core area
Terminology D 4439).
change of geocomposite pavement panel drains under vertical
3.1.5 index test, n—a test procedure, which may contain a
loading.
known bias but which may be used to order a set of specimens
1.2 The values as stated in SI units are to be regarded as the
with respect to the property of interest (see Terminology
standard. The values given in parentheses are for information
D 4439).
only.
1.3 This standard does not purport to address all of the
4. Summary of Test Method
safety concerns, if any, associated with its use. It is the
4.1 Geocomposite pavement panel drains are placed into a
responsibility of the user of this standard to establish appro-
304.8-mm (12-in.) long, 106.7-mm (4.20-in.) wide, and
priate safety and health practices and determine the applica-
610-mm (24-in.) tall glass and aluminum compression cham-
bility of regulatory limitations prior to use.
ber. The panels are placed against the wall of the chamber. The
2. Referenced Documents remainder of the chamber is then backfilled with a specified
sand. A vertical load is applied at a constant rate. The vertical
2.1 ASTM Standards:
strains of the panels and change in core area and height is
D 1566 Terminology Relating to Rubber
recorded at 1112.5-N (250-lb) increments. The test is discon-
D 4354 Practice for Sampling of Geosynthetics for Testing
tinued at 4450 N (1 000 lb) or 156.5 kPa (22.7 psi). The change
D 4439 Terminology for Geotextiles
in vertical strain, core height, and core area is determined.
3. Terminology
5. Significance and Use
3.1 Definitions of Terms Specific to This Standard:
5.1 The vertical compression test for geocomposite pave-
3.1.1 compressive deformation, n—the decrease in gage
ment panel drains is intended to simulate vertical, horizontal,
length produced in the test specimen by a compressive load,
and eccentric loading resulting from an applied vertical load.
expressed in units of length (new).
The results of the analyses, including vertical strain of the
3.1.2 compressive strain, n—the ratio of compressive defor-
panels and core area change, may be used as an index test. The
mation to the gage length of the test specimen, expressed as a
vertical compression test may be used to evaluate core area
dimension less ratio (new).
change for a given load.
3.1.3 gage length, n—the known distance between two
5.2 The vertical compression test may be used to evaluate
bench marks (see Terminology D 1566).
percent vertical strain for a given load.
3.1.3.1 Discussion—In compression testing of geosynthet-
5.3 This test method may be modified to evaluate core area
ics gage length is the measured thickness of the test specimen
change and vertical strain under various backfill conditions.
under specified compressional force, expressed in units of
length.
6. Apparatus
3.1.4 geosynthetic, n—a planar product manufactured from
6.1 Compression Machine—A compression machine that is
polymeric material used with foundation, soil, rock, earth, or
capable of producing at least 4450 N (1 000 lb) of load. The
machine must be capable of loading at a rate of 445 N (100
This test method is under the jurisdiction of ASTM Committee D-35 on lbs)/min, and maintaining a constant load for an indefinite
Geosynthetics and is the direct responsibility of Subcommittee D35.01 on Mechani-
period.
cal Properties.
Current edition approved March 10, 1998. Published December 1998.
Annual Book of ASTM Standards, Vol 09.01.
Annual Book of ASTM Standards, Vol 04.13.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D6244–98
6.2 Compression Box—The box must be capable of holding 6.8 Scale (Length Measuring Device)—A minimum range
the specimen and the backfill material, and it must be capable of 450 mm (18 in.), and an accuracy of 1 mm ( ⁄16 in.).
of supporting a minimum vertical load of 4450 N (1 000 lb).
The design of the box and the loading plate shall conform to 7. Sampling
the attached Fig. 1. The box shall be rigid enough to resist
7.1 Lot Sample—Divide the product into lots and take the
deformation.
lot sample as directed in Practice D 4354.
6.3 Clear Plastic Spacers (shown and described in Fig.
7.2 Laboratory Sample—Consider the units in the lot
2)—These spacers are used to protect the tempered glass ends
sample as the units in the laboratory sample for the lot to be
of the compression box from scratches.
tested. Take for a laboratory sample a sample extending the full
6.4 Sand—Sufficient sand to fill the compression box.
width of the panel drain, of sufficient length so that the
Natural sand is recommended. The sand shall have a gradation
requirements in 7.3 are met.
conforming to Table 1. The sand shall be oven dried and cooled
NOTE 1—This test method only addresses products with uniform
to room temperature.
(parallel and perpendicular) geometry. This procedure does not address
6.5 Tracing Paper—The paper must be suitable for tracing
products with other geometry.
and have a minimum size of 220 mm by 508 mm (8.5 in. by 20
in.). 7.3 The height of the drain sample tested shall be equal to
6.6 Light Source—Any high intensity point light source is the height of the drain in the field unless otherwise agreed to by
acceptable (for example a large mag light). the purchaser and manufacturer. The length of the drain sample
6.7 Planimeter—The planimeter is used to determine area shall be 298.5 mm (11.75 in.). The sample length shall be cut
to calculate loss of core area at the various load increments (a as close to or through a support post, or both, if possible, or
minimum of a digital planimeter should be used to calculate trim the edge of the drain to ensure that no fabric is unsup-
core area). If computer digitizing equipment or scanning ported at the ends of the sample to reduce end effects. Thin
equipment is available, this may be used in lieu of the plates of plexiglass (spacers) also may be used to insure a
planimeter. proper fit into the chamber.
FIG. 1 Edge Drain Compression Chamber
D6244–98
FIG. 2 Top View of Compression Chamber
TABLE 1 Backfill Gradation
core. This length may have to be reduced for stiffer fabrics.
A
Sieve Size Percent Passing
This extra fabric length is specified to reduce end effects.
9.5 mm ( ⁄8 in.) 100
NOTE 4—False readings in core change can occur due to fabric
No. 4 90–100
No. 16 45–80 intrusion on the ends of the core. End effects could govern response.
No. 50 5–25
No. 100 0–8 7.5 The geotextile covering the core shall be intact. There
A
shall not be any tears or punctures, and when the textile is
Crushed sand may be accepted with a minimum sand equivalent of 70
provided the passing No. 40 sieve fraction of the sand is nonplastic.
normally glued to the core for a particular design, it shall
remain glued for this test method.
NOTE 2—Spacers should not exceed a total thickness of 6.4 mm ( ⁄4 in.).
NOTE 3—False readings in core changes can occur due to changes
occurring only at the end of the sample.
7.4 When sampling, the geotextile shall be cut approxi-
mately 1
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.