ASTM D6454-99(2006)

Standard Test Method for Determining the Short-Term Compression Behavior of Turf Reinforcement Mats (TRMs)

SCOPE
1.1 The test method establishes the procedures for evaluation of the deformations of a turf reinforcement mat (TRM) under short-term compressive loading. This test method is strictly an index test method to be used to verify the compressive strength consistency of a given manufactured geosynthetic. Results from this test method should not be considered an indication of actual or long-term performance of the TRM in field applications.
1.2 Since these TRMs experience multidirectional compressive loadings in the field, this test method will not show actual field performance and should not be used for this specific objective. The evaluation of the results also should recognize that the determination of the short term single plane compressive behavior of geosynthetics does not reflect the installed performance of TRMs and, therefore, should not be used as the only method of product or performance specification.
1.3 The values in SI units are to be regarded as the standard. The values stated in inch-pound units are provided for information only.
1.4 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 to determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 31-Dec-2005
• ICS: 65.020.20 - Plant growing
• Technical Committee: D35 - Geosynthetics
• Drafting Committee: D35.05 - Geosynthetic Erosion Control

Relations

• Replaces: ASTM D6454-99 - Standard Test Method for Determining the Short-Term Compression Behavior of Turf Reinforcement Mats (TRMs)
• Effective Date: 01-Jan-2006
• Replaced By: ASTM D6454-99(2011) - Standard Test Method for Determining the Short-Term Compression Behavior of Turf Reinforcement Mats (TRMs)
• Effective Date: 01-Jun-2011

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D6454–99 (Reapproved 2006)
Standard Test Method for
Determining the Short-Term Compression Behavior of Turf
Reinforcement Mats (TRMs)
This standard is issued under the fixed designation D6454; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope D5199 Test Method for Measuring the Nominal Thickness
of Geosynthetics
1.1 The test method establishes the procedures for evalua-
tion of the deformations of a turf reinforcement mat (TRM)
3. Terminology
under short-term compressive loading. This test method is
3.1 Definitions:
strictly an index test method to be used to verify the compres-
3.1.1 compressive deformation, [L], n—the decrease in
sive strength consistency of a given manufactured geosyn-
gage length produced in the test specimen by a compressive
thetic. Results from this test method should not be considered
load.
as an indication of actual or long-term performance of the
3.1.2 compressive strain, [nd], n—the ratio of compressive
TRM in field applications.
deformation to the gage length of the test specimen.
1.2 Since theseTRMs experience multidirectional compres-
3.1.3 gage length, [L], n—in compression testing, the mea-
sive loadings in the field, this test method will not show actual
sured thickness of the test specimen under specified compres-
field performance and should not be used for this specific
sional force, expressed in units of length prior to compressive
objective. The evaluation of the results also should recognize
loading. D5199
that the determination of the short term single plane compres-
3.1.4 geosynthetic, n—a planar product manufactured from
sive behavior of geosynthetics does not reflect the installed
polymeric material used with foundation, soil, rock, earth, or
performance ofTRMs and, therefore, should not be used as the
any other geotechnical engineering related material as an
only method of product or performance specification.
integral part of a man-made project, structure, or system.
1.3 The values in SI units are to be regarded as the standard.
D4439
The values stated in inch-pound units are provided in paren-
3.1.5 index test, n—a test procedure which may contain a
theses for information only.
known bias but which may be used to establish an order for a
1.4 This standard does not purport to address all of the
set of specimens with respect to the property of interest.
safety concerns, if any, associated with its use. It is the
D4439
responsibility of the user of this standard to establish appro-
3.1.6 yield point, n—the first point on the load-deformation
priate safety and health practices and determine the applica-
curve at which an increase in deformation occurs without a
bility of regulatory limitations prior to use.
corresponding increase in load.
2. Referenced Documents 3.1.6.1 Discussion—Some geosynthetics do not exhibit an
2 exact yield point. The tested TRM may exhibit a less steep
2.1 ASTM Standards:
slope at yield. In addition, it should be stated that the yield
D4354 Practice for Sampling of Geosynthetics for Testing
point also may be the ultimate strength of the TRM.
D4439 Terminology for Geosynthetics
3.1.7 For definitions of terms relating to geotextiles, refer to
Terminology D4439.
This test method is under the jurisdiction of ASTM Committee D35 on
Geosynthetics and is the direct responsibility of Subcommittee D35.05 on Geosyn-
4. Summary of Test Method
thetic Erosion Control.
4.1 Specimensaremountedbetweenparallelplatesinaload
Current edition approved Jan. 1, 2006. Published February 2006. Originally
approved in 1999. Last previous edition approved in 1999 as D6454–99. DOI:
frame. Compressive loads are applied at a constant rate of
10.1520/D6454-99R06.
crosshead movement. The deformations are recorded as a
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
function of load. The compressive stress and strain are evalu-
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
atedandplotted.Thecompressiveyieldpointisevaluatedfrom
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
D6454–99 (2006)
equal to the sample width plus twice the thickness of the test sample. This
the stress/strain relationship for those materials that exhibit a
should support the sample through the range of deformation and prevent
detectable compressive yield point.
draping or flexing displacement.
5. Significance and Use
6.3 Movable Plate—Themovableplateshallbeofsufficient
5.1 The compression behavior test for TRMs is intended to
thickness and strength to preclude any bending during loading.
be an index test. It is anticipated that the results of the
It shall be parallel to the bottom fixed plate and attached to the
compression behavior test will be used to evaluate product.
compression mechanism. A spherical loading block of the
The results of the analyses also may be used to compare the
suspended,self-aligningtypeisrecommended.Thedimensions
relative compressive yield points of materials that exhibit a
and shape of the top movable, plate shall depend on the
detectable compressive yield point. It is anticipated that this
specimen dimensions and geometry. In general, both length
test will be used for quality control testing to evaluate
andwidthofthetopmovableplateshouldeachbeatleast20 %
uniformity and consistency within a lot or between lots where
greater than the length and width of the specimens.
sample geometry factors, for example, thickness, or materials
6.4 Load Indicator—Use a load-indicating mechanism that
may have changed.
has an accuracy of 6 1 % of the maximum indicated value of
the test (force).
NOTE 1—This is a one-dimensional test for compressive loading of a
6.5 Deformation Indicator—Use a deformation-indicating
TRM in one plane.
mechanism that has an accuracy of 6 1.0 % of the maximum
5.1.1 The compressive yield point of TRMs may be evalu-
indicated value of the test (deformation).
ated from the stress/strain relationship. Many materials exhibit
6.6 Micrometer Dial Gage, caliper or steel rule, suitable for
compressive deformation but may not show a distinct com-
measuring dimensions of the specimens to+1%.
pressive yield point.
5.2 This test method can be used to evaluate the short-term
7. Sampling
stress/strain behavior of TRMs under compressive stress while
7.1 Lot Sample—Divide the product into lots and take the
loaded at a constant rate of deformation.
lot sample as directed in Practice D4354.
5.3 This test method may be used for acceptance testing of
7.2 Laboratory Sample—Units in the laboratory sample
commercial shipments ofTRMs but caution is advised because
should be the same as the units in the lot sample for the lot to
interlaboratory testing is incomplete.
betested.Takeasampleextendingacrossthefullwidth,thatis,
5.3.1 In the case of a dispute arising from differences in
cross-machine direction, of the TRM production unit of suffi-
reported test results when using this test method for acceptance
cientlength,thatis,machinedirection,sothattherequirements
testing of commercial shipments, the purchaser and the sup-
of 7.3 can be met. Take a sample that will exclude material
plier should conduct comparative tests to determine if there is
from the outer wrap of a roll, if applicable, unless the sample
statisticall
...