ASTM D6214/D6214M-98(2022)
(Test Method)Standard Test Method for Determining the Integrity of Field Seams Used in Joining Geomembranes by Chemical Fusion Methods
Standard Test Method for Determining the Integrity of Field Seams Used in Joining Geomembranes by Chemical Fusion Methods
SIGNIFICANCE AND USE
4.1 Significance—The increased use of geomembranes as barrier materials to restrict fluid migration from one location to another in various applications, and the various types of seaming methods used in joining geomembrane sheets, has created a need to standardize tests by which the various seams can be compared and the quality of the seam systems can be evaluated. This test method is intended to meet such a need.
4.2 Use—Accelerated seam test provides information as to the status of the field seam. Data obtained by this test method should be used with site-specific contract plans, specification, and CQC/CQA documents. This test method is useful for specification testing and for comparative purposes, but does not necessarily measure the ultimate strength that the seam may acquire.
SCOPE
1.1 This test method covers an accelerated, destructive test method for geomembranes in a geotechnical application.
1.2 This test is applicable to field-fabricated geomembranes that are scrim reinforced or nonreinforced.
1.3 This test method is applicable for field seaming processes that use a chemical fusion agent or bodied chemical fusion agent as the seaming mechanism.
1.4 Subsequent decisions as to seam acceptance criteria are made according to the site-specific contract plans, specification, and CQC/CQA documents.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.
1.6 Hazardous Materials—Always consult the proper Material Safety Data Sheets for any hazardous materials used for proper ventilation and protection. The use of the oven in this test method may accelerate fume production from the test specimen.
1.7 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D6214/D6214M − 98 (Reapproved 2022)
Standard Test Method for
Determining the Integrity of Field Seams Used in Joining
Geomembranes by Chemical Fusion Methods
This standard is issued under the fixed designation D6214/D6214M; 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 2. Referenced Documents
2.1 ASTM Standards:
1.1 This test method covers an accelerated, destructive test
method for geomembranes in a geotechnical application. D413 TestMethodsforRubberProperty—AdhesiontoFlex-
ible Substrate
1.2 This test is applicable to field-fabricated geomembranes
D638 Test Method for Tensile Properties of Plastics
that are scrim reinforced or nonreinforced.
D751 Test Methods for Coated Fabrics
1.3 This test method is applicable for field seaming pro-
D882 Test Method for Tensile Properties of Thin Plastic
cesses that use a chemical fusion agent or bodied chemical
Sheeting
fusion agent as the seaming mechanism.
D4439 Terminology for Geosynthetics
2.2 ANSI/NSF Standard:
1.4 Subsequent decisions as to seam acceptance criteria are
ANSI/NSF Standard 54
made according to the site-specific contract plans,
specification, and CQC/CQA documents.
3. Terminology
1.5 The values stated in either SI units or inch-pound units
3.1 Definitions of Terms Specific to This Standard:
are to be regarded separately as standard. The values stated in
3.1.1 bodied chemical agent, n—a chemical fluid containing
each system are not necessarily exact equivalents; therefore, to
a portion of the parent geomembrane polymer, that dissolves
ensure conformance with the standard, each system shall be
the surface of the geomembrane to be bonded.
used independently of the other, and values from the two
3.1.2 bodied-chemical fusion seams, n—use of a bodied
systems shall not be combined.
chemicalagenttodissolvethesurfacesofthegeomembranefor
1.6 Hazardous Materials—Always consult the proper Ma-
bonding.
terial Safety Data Sheets for any hazardous materials used for
3.1.2.1 Discussion—Heat and pressure are commonly used
proper ventilation and protection. The use of the oven in this
as part of the bodied chemical fusion process.
test method may accelerate fume production from the test
3.1.3 chemical agent, n—a chemical fluid that dissolves the
specimen.
surface of the geomembrane to be bonded.
1.7 This standard does not purport to address all of the
3.1.4 chemical fusion seams, n—use of a chemical agent to
safety concerns, if any, associated with its use. It is the
dissolve the surface of the geomembrane for bonding.
responsibility of the user of this standard to establish appro-
3.1.4.1 Discussion—Heat and pressure are commonly used
priate safety, health, and environmental practices and deter-
as part of the chemical fusion process.
mine the applicability of regulatory limitations prior to use.
3.2 For other terms, refer to Terminology D4439.
1.8 This international standard was developed in accor-
dance with internationally recognized principles on standard-
4. Significance and Use
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 4.1 Significance—The increased use of geomembranes as
mendations issued by the World Trade Organization Technical barrier materials to restrict fluid migration from one location to
Barriers to Trade (TBT) Committee. another in various applications, and the various types of
seaming methods used in joining geomembrane sheets, has
1 2
This test method is under the jurisdiction of ASTM Committee D35 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
GeosyntheticsandisthedirectresponsibilityofSubcommitteeD35.10onGeomem- contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
branes. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Jan. 15, 2022. Published January 2022. Originally the ASTM website.
approved in 1997. Last previous edition approved in 2013 as D6214/D6214M – 98 Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
ɛ1
(2013) . DOI: 10.1520/D6214_D6214M-98R22. 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6214/D6214M − 98 (2022)
created a need to standardize tests by which the various seams move completely around the samples without obstruction to
can be compared and the quality of the seam systems can be allow for dissipation of vapors.
evaluated. This test method is intended to meet such a need.
6. Materials
4.2 Use—Accelerated seam test provides information as to
the status of the field seam. Data obtained by this test method
6.1 The geomembrane material (reinforced or nonrein-
should be used with site-specific contract plans, specification,
forced) shall be capable of being bonded to itself by one of the
and CQC/CQA documents. This test method is useful for
methods described in Section 3 according to the geomembrane
specification testing and for comparative purposes, but does
manufacturers’ recommendations and instructions.
not necessarily measure the ultimate strength that the seam
may acquire.
7. Sampling, Test Specimens, and Test Units
7.1 Trial Seam Sample—A representative seam from each
5. Apparatus
seaming crew, fabricated from the same sheet material, and
5.1 A testing machine of the constant rate of cross head
using the same seaming methods as those recommended by the
movement type comprising essentially of the following:
geomembrane frabricator, installer, or sheet manufacturer, or
5.1.1 Fixed Member—A fixed or essentially stationary
all of these, will be used for this test method.
member carrying one grip.
7.1.1 The trial seam sample shall be no loss than 3 m [10 ft]
5.1.2 Movable Member—A movable member carrying a
in length for this method.
second grip.
7.1.2 For nonreinforced geomembranes, cut five 25 mm
5.1.3 Grips—Grips for holding the test specimen between
[1 in.] wide specimens for shear and five 25 mm [1 in.] wide
the fixed member and the movable member and minimizing
specimens for peel testing from the trial seam sample after the
both slippage and uneven stress distribution. The grips shall be
sample has been cured in accordance with Section 8.
self-aligning so that they shall be attached to the fixed and
7.1.3 For reinforced geomembranes, cut five 100 mm [4 in.]
movable member, respectively, in such a manner that they will
wide specimens for shear and five 25 mm [1 in.] wide
move freely into alignment as soon as any load is applied, so
specimens for peel testing from the trial seam sample after the
that the long axis of the test specimen will coincide with the
sample has been cured in accordance with Section 8.
direction of the applied pull through the center line of the grip
7.1.4 Frequency of trial seams and sampling locations
assembly.
within trial seams should be determined in accordance with the
site-specific contract documents.
NOTE 1—Grips lined with thin rubber, crocus-cloth, or pressure-
sensitive tape, as well as file-faced or serrated grips, have been success-
7.2 Field Seam Sample—Cut a 300 mm [12 in.] long
fully used for many materials. The choice of grip surface will depend on
nonreinforced or a 1200 mm [48 in.] long reinforced section of
the material tested, thickness, etc.
the fabricated seam from the installed lining for this test
5.1.4 Drive Mechanism—A drive mechanism for imparting
method.
to the movable member in uniform, controlled velocity with
7.2.1 For nonreinforced geomembranes, cut five 25 mm
respect to the stationary member. Unless otherwise specified in
[1 in.] wide specimens for shear and five 25 mm [1 in.] wide
the material specification, the mechanism shall be capable of
specimens for peel testing from the field seam sample after the
and adjusted so that the movable member shall have a uniform
sample is cured in accordance with Section 8.
speed of 50 mm/min, [2 in./min], 300 mm/min [12 in./min],
7.2.2 For reinforced geomembranes, cut five 100 mm [4 in.]
and 500 mm/min [20 in./min.]
wide specimens for shear and five 25 mm [1 in.] wide
5.1.5 Load Indicator—A suitable load-indicating mecha-
specimens for peel testing fro
...
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: D6214/D6214M − 98 (Reapproved 2022)
Standard Test Method for
Determining the Integrity of Field Seams Used in Joining
Geomembranes by Chemical Fusion Methods
This standard is issued under the fixed designation D6214/D6214M; 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 2. Referenced Documents
1.1 This test method covers an accelerated, destructive test 2.1 ASTM Standards:
D413 Test Methods for Rubber Property—Adhesion to Flex-
method for geomembranes in a geotechnical application.
ible Substrate
1.2 This test is applicable to field-fabricated geomembranes
D638 Test Method for Tensile Properties of Plastics
that are scrim reinforced or nonreinforced.
D751 Test Methods for Coated Fabrics
1.3 This test method is applicable for field seaming pro-
D882 Test Method for Tensile Properties of Thin Plastic
cesses that use a chemical fusion agent or bodied chemical
Sheeting
fusion agent as the seaming mechanism.
D4439 Terminology for Geosynthetics
2.2 ANSI/NSF Standard:
1.4 Subsequent decisions as to seam acceptance criteria are
ANSI/NSF Standard 54
made according to the site-specific contract plans,
specification, and CQC/CQA documents.
3. Terminology
1.5 The values stated in either SI units or inch-pound units
3.1 Definitions of Terms Specific to This Standard:
are to be regarded separately as standard. The values stated in
3.1.1 bodied chemical agent, n—a chemical fluid containing
each system are not necessarily exact equivalents; therefore, to
a portion of the parent geomembrane polymer, that dissolves
ensure conformance with the standard, each system shall be
the surface of the geomembrane to be bonded.
used independently of the other, and values from the two
3.1.2 bodied-chemical fusion seams, n—use of a bodied
systems shall not be combined.
chemical agent to dissolve the surfaces of the geomembrane for
1.6 Hazardous Materials—Always consult the proper Ma-
bonding.
terial Safety Data Sheets for any hazardous materials used for
3.1.2.1 Discussion—Heat and pressure are commonly used
proper ventilation and protection. The use of the oven in this
as part of the bodied chemical fusion process.
test method may accelerate fume production from the test
3.1.3 chemical agent, n—a chemical fluid that dissolves the
specimen.
surface of the geomembrane to be bonded.
1.7 This standard does not purport to address all of the
3.1.4 chemical fusion seams, n—use of a chemical agent to
safety concerns, if any, associated with its use. It is the
dissolve the surface of the geomembrane for bonding.
responsibility of the user of this standard to establish appro-
3.1.4.1 Discussion—Heat and pressure are commonly used
priate safety, health, and environmental practices and deter-
as part of the chemical fusion process.
mine the applicability of regulatory limitations prior to use.
3.2 For other terms, refer to Terminology D4439.
1.8 This international standard was developed in accor-
dance with internationally recognized principles on standard-
4. Significance and Use
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 4.1 Significance—The increased use of geomembranes as
mendations issued by the World Trade Organization Technical barrier materials to restrict fluid migration from one location to
Barriers to Trade (TBT) Committee. another in various applications, and the various types of
seaming methods used in joining geomembrane sheets, has
1 2
This test method is under the jurisdiction of ASTM Committee D35 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Geosynthetics and is the direct responsibility of Subcommittee D35.10 on Geomem- contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
branes. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Jan. 15, 2022. Published January 2022. Originally the ASTM website.
approved in 1997. Last previous edition approved in 2013 as D6214/D6214M – 98 Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
ɛ1
(2013) . DOI: 10.1520/D6214_D6214M-98R22. 4th Floor, New York, NY 10036, http://www.ansi.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6214/D6214M − 98 (2022)
created a need to standardize tests by which the various seams move completely around the samples without obstruction to
can be compared and the quality of the seam systems can be allow for dissipation of vapors.
evaluated. This test method is intended to meet such a need.
6. Materials
4.2 Use—Accelerated seam test provides information as to
the status of the field seam. Data obtained by this test method
6.1 The geomembrane material (reinforced or nonrein-
should be used with site-specific contract plans, specification,
forced) shall be capable of being bonded to itself by one of the
and CQC/CQA documents. This test method is useful for
methods described in Section 3 according to the geomembrane
specification testing and for comparative purposes, but does
manufacturers’ recommendations and instructions.
not necessarily measure the ultimate strength that the seam
may acquire.
7. Sampling, Test Specimens, and Test Units
7.1 Trial Seam Sample—A representative seam from each
5. Apparatus
seaming crew, fabricated from the same sheet material, and
5.1 A testing machine of the constant rate of cross head
using the same seaming methods as those recommended by the
movement type comprising essentially of the following:
geomembrane frabricator, installer, or sheet manufacturer, or
5.1.1 Fixed Member—A fixed or essentially stationary
all of these, will be used for this test method.
member carrying one grip.
7.1.1 The trial seam sample shall be no loss than 3 m [10 ft]
5.1.2 Movable Member—A movable member carrying a
in length for this method.
second grip.
7.1.2 For nonreinforced geomembranes, cut five 25 mm
5.1.3 Grips—Grips for holding the test specimen between
[1 in.] wide specimens for shear and five 25 mm [1 in.] wide
the fixed member and the movable member and minimizing
specimens for peel testing from the trial seam sample after the
both slippage and uneven stress distribution. The grips shall be
sample has been cured in accordance with Section 8.
self-aligning so that they shall be attached to the fixed and
7.1.3 For reinforced geomembranes, cut five 100 mm [4 in.]
movable member, respectively, in such a manner that they will
wide specimens for shear and five 25 mm [1 in.] wide
move freely into alignment as soon as any load is applied, so
specimens for peel testing from the trial seam sample after the
that the long axis of the test specimen will coincide with the
sample has been cured in accordance with Section 8.
direction of the applied pull through the center line of the grip
7.1.4 Frequency of trial seams and sampling locations
assembly.
within trial seams should be determined in accordance with the
site-specific contract documents.
NOTE 1—Grips lined with thin rubber, crocus-cloth, or pressure-
sensitive tape, as well as file-faced or serrated grips, have been success-
7.2 Field Seam Sample—Cut a 300 mm [12 in.] long
fully used for many materials. The choice of grip surface will depend on
nonreinforced or a 1200 mm [48 in.] long reinforced section of
the material tested, thickness, etc.
the fabricated seam from the installed lining for this test
5.1.4 Drive Mechanism—A drive mechanism for imparting
method.
to the movable member in uniform, controlled velocity with
7.2.1 For nonreinforced geomembranes, cut five 25 mm
respect to the stationary member. Unless otherwise specified in
[1 in.] wide specimens for shear and five 25 mm [1 in.] wide
the material specification, the mechanism shall be capable of
specimens for peel testing from the field seam sample after the
and adjusted so that the movable member shall have a uniform
sample is cured in accordance with Section 8.
speed of 50 mm/min, [2 in./min], 300 mm/min [12 in./min],
7.2.2 For reinforced geomembranes, cut five 100 mm [4 in.]
and 500 mm/min [20 in./min.]
wide specimens for shear and five 25 mm [1 in.] wide
5.1.5 Load Indicator—A suitable load-indicating mecha-
specimens for peel testing from the field seam sample after the
nism capable of showing the total tensile load carrie
...
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.
´1
Designation: D6214/D6214M − 98 (Reapproved 2013) D6214/D6214M − 98 (Reapproved
2022)
Standard Test Method for
Determining the Integrity of Field Seams Used in Joining
Geomembranes by Chemical Fusion Methods
This standard is issued under the fixed designation D6214/D6214M; 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.
ε NOTE—Units information was editorially corrected in June 2013.
1. Scope
1.1 This test method covers an accelerated, destructive test method for geomembranes in a geotechnical application.
1.2 This test is applicable to field fabricated field-fabricated geomembranes that are scrim reinforced or non reinforced.nonrein-
forced.
1.3 This test method is applicable for field seaming processes that use a chemical fusion agent or bodied chemical fusion
agent,agent as the seaming mechanism.
1.4 Subsequent decisions as to seam acceptance criteria are made according to the site-specific contract plans, specification, and
CQC/CQA documents.
1.5 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used
independently of the other, and values from the two systems shall not be combined.
1.6 Hazardous Materials—Always consult the proper Material Safety Data Sheets for any Hazardoushazardous materials used for
proper ventilation and protection. The use of the oven in this test method may accelerate fume production from the test specimen.
1.7 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 safety, health, and healthenvironmental practices and determine the
applicableapplicability of regulatory limitations prior to use.
1.8 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
This test method is under the jurisdiction of ASTM Committee D35 on Geosynthetics and is the direct responsibility of Subcommittee D35.10 on Geomembranes.
Current edition approved May 1, 2013Jan. 15, 2022. Published June 2013January 2022. Originally approved in 1997. Last previous edition approved in 20082013 as
ɛ1
D6214D6214/D6214M – 98 (2013) –98 (2008). . DOI: 10.1520/D6214_D6214M-98R13E01.10.1520/D6214_D6214M-98R22.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6214/D6214M − 98 (2022)
2. Referenced Documents
2.1 ASTM Standards:
D413 Test Methods for Rubber Property—Adhesion to Flexible Substrate
D638 Test Method for Tensile Properties of Plastics
D751 Test Methods for Coated Fabrics
D882 Test Method for Tensile Properties of Thin Plastic Sheeting
D4439 Terminology for Geosynthetics
2.2 ANSI/NSF Standard:
ANSI/NSF Standard 54
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 bodied chemical agent, n—a chemical fluid containing a portion of the parent geomembrane polymer, that dissolves the
surface of the geomembrane to be bonded.
3.1.2 bodied-chemical fusion seams, n—use of a bodied chemical agent to dissolve the surfaces of the geomembrane for bonding.
3.1.2.1 Discussion—
Heat and pressure are commonly used as part of the bodied chemical fusion process.
3.1.3 chemical agent, n—a chemical fluid that dissolves the surface of the geomembrane to be bonded.
3.1.4 chemical fusion seams, n—use of a chemical agent to dissolve the surface of the geomembrane for bonding.
3.1.4.1 Discussion—
Heat and pressure are commonly used as part of the chemical fusion process.
3.2 For other terms, refer to Terminology D4439.
4. Significance and Use
4.1 Significance—The increased use of geomembranes as barrier materials to restrict fluid migration from one location to another
in various applications, and the various types of seaming methods used in joining geomembrane sheets, has created a need to
standardize tests by which the various seams can be compared and the quality of the seam systems can be evaluated. This test
method is intended to meet such a need.
4.2 Use—Accelerated seam test provides information as to the status of the field seam. Data obtained by this test method should
be used with site-specific contract plans, specification, and CQC/CQA documents. This test method is useful for specification
testing and for comparative purposes, but does not necessarily measure the ultimate strength that the seam may acquire.
5. Apparatus
5.1 A testing machine of the constant-rate-of-cross head-movement constant rate of cross head movement type comprising
essentially of the following:
5.1.1 Fixed Member—A fixed or essentially stationary member carrying one grip.
5.1.2 Movable Member—A movable member carrying a second grip.
5.1.3 Grips—Grips for holding the test specimen between the fixed member and the movable member and minimizesminimizing
both slippage and uneven stress distribution. The grips shall be self-aligning so that they shall be attached to the fixed and movable
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.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
D6214/D6214M − 98 (2022)
member, respectively, in such a manner that they will move freely into alignment as soon as any load is applied, so that the long
axis of the test specimen will coincide with the direction of the applied pull through the center line of the grip assembly.
NOTE 1—Grips lined with thin rubber, crocus-clothcrocus-cloth, or pressure-sensitive tape, as well as file-faced or serrated grips, have been successfully
used for many materials. The choice of grip surface will depend on the material tested, thickness, etc.
5.1.4 Drive Mechanism—A drive mechanism for imparting to the movable member in uniform, controlled velocity with respect
to the stationary member. Unless otherwise specified in the material specification, the mechanism shall be capable of and adjusted
so that the movable member shall have a uniform speed of 50 mm/min, [2 in./min], 300 mm/min [12 in./min], and 500 mm/min
[20 in./min.]
5.1.5 Load Indicator—A suitable load-indicating mechanism capable of showing the total tensile load carried by the test specimen
when held by the grips. This mechanism shall be essentially free of inertia lag at the specified rate of testing and shall indicate
the load with an accuracy of 61 % of the indicated value or better.
5.1.6 Extension Indicator (Extensometer) (If Employed)—A suitable instrument shall be used for determining the distance between
two designated points within the gage length of the test specimen as the specimen is stretched and shall conform to requirements
specified in Test Method D638.
5.2 Oven—An oven of sufficient size to hold a rack containing at least three 30 cm [12 in.] wide test strip samples for accelerated
curing is necessary. The oven should be a forced convection oven and must be capable of maintaining a temperature of 50°C
[122°F] 6 3°C [6°F]50 °C [122 °F] 6 3 °C [6 °F] for at least 16 h.
5.3 Rock—Rack—A rack for holding and positioning the test strip horizontally or vertically in an oven is necessary. The samples
must be separated from one another so that the air is free to move completely around the samples without obstruction to allow for
dissipation of vapors.
6. Materials
6.1 The geomembrane material (reinforced or non reinforced) nonreinforced) shall be capable of being bonded to itself by one of
the methods described in Section 3 according to the geomembrane manufacturers’ recommendations and instructions.
7. Sampling, Test Specimens, and Test Units
7.1 Trial Seam Sample—A representative seam from each seaming crew, fabricated from the same sheet material, and using the
same seaming methods as those recommended by the geomembrane frabricator, installer, or sheet manufacturer, or all of these, will
be used for this test method.
7.1.1 The trial seam sample shall be no loss than 3 m [10 ft] in length for this method.
7.1.2 For non reinforced nonreinforced geomembranes, cut fiv
...
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