ASTM D6525/D6525M-16
(Test Method)Standard Test Method for Measuring Nominal Thickness of Rolled Erosion Control Products
Standard Test Method for Measuring Nominal Thickness of Rolled Erosion Control Products
SIGNIFICANCE AND USE
5.1 Thickness is one of the basic physical properties used to control the quality of rolled erosion control products. Thickness values may aid in the calculation of other rolled erosion control product parameters. Thickness however is not generally an indication of field performance and generally should not be used in specifications. This test method is developed to aid manufacturers, designers, and end users in comparing the thickness of rolled erosion control products through the use of an accepted ASTM standard.
5.2 The thickness of rolled erosion control products may vary considerably depending on the pressure applied to the specimen during measurement. Where observed changes occur, thickness decreases when applied pressure is increased. To minimize variation, specific sample size and applied pressure are indicated in this test method to ensure all results are comparable.
5.3 This test method may be used for acceptance testing of commercial shipments of rolled erosion control products, but caution is advised since information on between-laboratory precision is incomplete. Comparative tests in accordance with 5.3.1 may be advised.
5.3.1 In case of a dispute arising from differences in reported test results when using this test method for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens that are as homogeneous as possible and that are formed from a lot of material of the type in question. The test specimens should be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using Students t-test for unpaired data and an acceptable probability level chosen by the two parties before the testing is begun. If bias...
SCOPE
1.1 This test method covers the measurement of the nominal thickness of rolled erosion control products.
1.2 This test method does not provide thickness values for rolled erosion control products under variable compressive stresses. This test method determines nominal thickness, not necessarily minimum thickness.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
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 determine the applicability of regulatory limitations prior to use.
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Designation: D6525/D6525M − 16
Standard Test Method for
Measuring Nominal Thickness of Rolled Erosion Control
1
Products
This standard is issued under the fixed designation D6525/D6525M; 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 3.1.2 thickness—(1)thedistancebetweenoneplanarsurface
and its opposite parallel and planar surface; (2) in rolled
1.1 Thistestmethodcoversthemeasurementofthenominal
erosion control products, the distance between the upper and
thickness of rolled erosion control products.
lower surfaces of the material, measured under a specified
1.2 This test method does not provide thickness values for
pressure and time.
rolled erosion control products under variable compressive
stresses. This test method determines nominal thickness, not
4. Summary of Test Method
necessarily minimum thickness.
4.1 Thenominalthicknessofrollederosioncontrolproducts
1.3 The values stated in either SI units or inch-pound units
is determined by observing the perpendicular distance that a
are to be regarded separately as standard. The values stated in
movableplaneisdisplacedfromaparallelsurfacebytherolled
each system may not be exact equivalents; therefore, each
erosion control product while under a specified pressure of
system shall be used independently of the other. Combining
0.2 kPa [0.029 psi] for 5 s.
values from the two systems may result in non-conformance
5. Significance and Use
with the standard.
5.1 Thickness is one of the basic physical properties used to
1.4 This standard does not purport to address all of the
control the quality of rolled erosion control products. Thick-
safety concerns, if any, associated with its use. It is the
ness values may aid in the calculation of other rolled erosion
responsibility of the user of this standard to establish appro-
control product parameters. Thickness however is not gener-
priate safety and health practices and determine the applica-
allyanindicationoffieldperformanceandgenerallyshouldnot
bility of regulatory limitations prior to use.
be used in specifications. This test method is developed to aid
2. Referenced Documents manufacturers, designers, and end users in comparing the
2
thickness of rolled erosion control products through the use of
2.1 ASTM Standards:
an accepted ASTM standard.
D4354 Practice for Sampling of Geosynthetics and Rolled
Erosion Control Products(RECPs) for Testing 5.2 The thickness of rolled erosion control products may
E177 Practice for Use of the Terms Precision and Bias in vary considerably depending on the pressure applied to the
ASTM Test Methods
specimenduringmeasurement.Whereobservedchangesoccur,
E691 Practice for Conducting an Interlaboratory Study to thickness decreases when applied pressure is increased. To
Determine the Precision of a Test Method
minimize variation, specific sample size and applied pressure
are indicated in this test method to ensure all results are
3. Terminology
comparable.
3.1 Definitions:
5.3 This test method may be used for acceptance testing of
3.1.1 pressure, n—the force or load per unit area.
commercial shipments of rolled erosion control products, but
caution is advised since information on between-laboratory
precision is incomplete. Comparative tests in accordance with
1
This test method is under the jurisdiction of ASTM Committee D35 on
5.3.1 may be advised.
Geosynthetics and is the direct responsibility of Subcommittee D35.05 on Geosyn-
5.3.1 In case of a dispute arising from differences in
thetic Erosion Control.
reported test results when using this test method for acceptance
Current edition approved July 1, 2016. Published July 2016. Originally approved
testing of commercial shipments, the purchaser and the sup-
in 2000. Last previous edition approved in 2014 as D6525/D6525M – 14. DOI:
10.1520/D6525_D6525M-16.
plier should conduct comparative tests to determine if there is
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
a statistical bias between their laboratories. Competent statis-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
tical assistance is recommended for the investigation of bias.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. As a minimum, the two parties should take a group of test
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
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D6525/D6525M − 16
specimens that are as homogeneous as possible and that are 7.5 Number of Specimens—Unless otherwise
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D6525/D6525M − 14 D6525/D6525M − 16
Standard Test Method for
Measuring Nominal Thickness of Rolled Erosion Control
1
Products
This standard is issued under the fixed designation D6525/D6525M; 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
1.1 This test method covers the measurement of the nominal thickness of permanent rolled erosion control products.
1.2 This test method does not provide thickness values for permanent rolled erosion control products under variable
compressive stresses. This test method determines nominal thickness, not necessarily minimum thickness.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
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 determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D4354 Practice for Sampling of Geosynthetics and Rolled Erosion Control Products(RECPs) for Testing
D5199 Test Method for Measuring the Nominal Thickness of Geosynthetics
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
3. Terminology
3.1 Definitions:
3.1.1 pressure, n—the force or load per unit area.
3.1.2 thickness—(1) the distance between one planar surface and its opposite parallel and planar surface; (2) in permanent rolled
erosion control products, the distance between the upper and lower surfaces of the material, measured under a specified pressure
and time.
4. Summary of Test Method
4.1 The nominal thickness of permanent rolled erosion control products is determined by observing the perpendicular distance
that a movable plane is displaced from a parallel surface by the permanent rolled erosion control product while under a specified
pressure of 0.2 kPa 0.2 kPa [0.029 psi] for 5 s.
5. Significance and Use
5.1 Thickness is one of the basic physical properties used to control the quality of permanent rolled erosion control products.
Thickness values may aid in the calculation of other permanent rolled erosion control product parameters. Thickness however is
1
This test method is under the jurisdiction of ASTM Committee D35 on Geosynthetics and is the direct responsibility of Subcommittee D35.05 on Geosynthetic Erosion
Control.
Current edition approved Aug. 1, 2014July 1, 2016. Published September 2014July 2016. Originally approved in 2000. Last previous edition approved in 20122014 as
D6525 – 12.D6525/D6525M – 14. DOI: 10.1520/D6525_D6525M-14.10.1520/D6525_D6525M-16.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM 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
1
---------------------- Page: 1 ----------------------
D6525/D6525M − 16
not generally an indication of field performance and generally should not be used in specifications. This test method is developed
to aid manufacturers, designers, and end users in comparing the thickness of permanent rolled erosion control products through
the use of an accepted ASTM standard.
5.2 The thickness of permanent rolled erosion control products may vary considerably depending on the pressure applied to the
specimen during measurement. Where observed changes occur, thickness decreases when applied pressure is increased. To
minimize variation, specific sample size and applied pressure are indicated in this test method to ensure all results are comparable.
5.3 This test method may be used for acceptance testing of commercial shipments of permanent rolled erosion control products,
but caution is advised since information on between-laboratory precision is incomplete. Comparative
...
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