ASTM D6525-12
(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 permanent rolled erosion control products. Thickness values may aid in the calculation of other permanent 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 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 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 t...
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 SI units are to be regarded as standard. The values given in parentheses are 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 determine the applicability of regulatory limitations prior to use.
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Designation: D6525 − 12
StandardTest Method for
Measuring Nominal Thickness of Rolled Erosion Control
1
Products
This standard is issued under the fixed designation D6525; 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 4. Summary of Test Method
4.1 The nominal thickness of permanent rolled erosion
1.1 Thistestmethodcoversthemeasurementofthenominal
thickness of permanent rolled erosion control products. control products is determined by observing the perpendicular
distance that a movable plane is displaced from a parallel
1.2 This test method does not provide thickness values for
surface by the permanent rolled erosion control product while
permanent rolled erosion control products under variable
under a specified pressure of 0.2 kPa (0.029 psi) for 5 s.
compressive stresses. This test method determines nominal
thickness, not necessarily minimum thickness.
5. Significance and Use
1.3 The values stated in SI units are to be regarded as
5.1 Thickness is one of the basic physical properties used to
standard. The values given in parentheses are for information
control the quality of permanent rolled erosion control prod-
only.
ucts. Thickness values may aid in the calculation of other
permanent rolled erosion control product parameters. Thick-
1.4 This standard does not purport to address all of the
ness however is not generally an indication of field perfor-
safety concerns, if any, associated with its use. It is the
mance and generally should not be used in specifications. This
responsibility of the user of this standard to establish appro-
test method is developed to aid manufacturers, designers, and
priate safety and health practices and determine the applica-
end users in comparing the thickness of permanent rolled
bility of regulatory limitations prior to use.
erosion control products through the use of an acceptedASTM
standard.
2. Referenced Documents
2
5.2 The thickness of permanent rolled erosion control prod-
2.1 ASTM Standards:
ucts may vary considerably depending on the pressure applied
D4354 Practice for Sampling of Geosynthetics for Testing
to the specimen during measurement.Where observed changes
D5199 Test Method for Measuring the Nominal Thickness
occur, thickness decreases when applied pressure is increased.
of Geosynthetics
To minimize variation, specific sample size and applied pres-
sure 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 permanent rolled erosion control
3.1.2 thickness—(1)thedistancebetweenoneplanarsurface
products, but caution is advised since information on between-
and its opposite parallel and planar surface; (2) in permanent
laboratory precision is incomplete. Comparative tests in accor-
rolled erosion control products, the distance between the upper
dance with 5.3.1 may be advised.
and lower surfaces of the material, measured under a specified
5.3.1 In case of a dispute arising from differences in
pressure and time.
reported test results when using this test method for acceptance
testing of commercial shipments, the purchaser and the sup-
plier should conduct comparative tests to determine if there is
1
This test method is under the jurisdiction of ASTM Committee D35 on
a statistical bias between their laboratories. Competent statis-
Geosynthetics and is the direct responsibility of Subcommittee D35.05 on Geosyn-
tical assistance is recommended for the investigation of bias.
thetic Erosion Control.
As a minimum, the two parties should take a group of test
Current edition approved July 1, 2012. Published September 2012. Originally
specimens that are as homogeneous as possible and that are
approved in 2000. Last previous edition approved in 2006 as D6525 – 00R06. DOI:
10.1520/D6525-12.
formed from a lot of material of the type in question. The test
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
specimens should be randomly assigned in equal numbers to
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
each laboratory for testing. The average results from the two
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. laboratories should be compared using Students t-test for
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D6525 − 12
unpaireddataandanacceptablep
...
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 − 00 (Reapproved 2006) D6525 − 12
Standard Test Method for
Measuring Nominal Thickness of Permanent Rolled Erosion
1
Control Products
This standard is issued under the fixed designation D6525; 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 SI units are to be regarded as standard. The values given in parentheses are 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 determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D4354 Practice for Sampling of Geosynthetics for Testing
D5199 Test Method for Measuring the Nominal Thickness of Geosynthetics
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 (0.029 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
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.
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 June 1, 2006July 1, 2012. Published June 2006September 2012. Originally approved in 2000. Last previous edition approved in 20002006 as
D6525 – 00.D6525 – 00R06. DOI: 10.1520/D6525-00R06.10.1520/D6525-12.
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 − 12
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 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 t
...
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