ASTM D5721-08(2018)

Standard Practice for Air-Oven Aging of Polyolefin Geomembranes

SIGNIFICANCE AND USE
4.1 Under the severe conditions of this test, the specimens undergo degradation at a rate that is a function of the thermal endurance of the geomembrane under examination.  
4.2 The elevated temperature for this practice should represent conditions that are sufficiently severe to induce failure of polyolefin geomembranes within an abbreviated period of time.  
4.3 The rate of change of a particular property as a function of temperature may be evaluated using the temperatures and times outlined in Practice D3045.  
4.4 Any correlation between this practice and natural life of these materials must be determined for the particular application in which the materials are to be used.  
4.5 Air-oven aging can be used to evaluate and compare the performance of various heat stabilizer packages.
SCOPE
1.1 This practice covers a means for estimating the resistance of polyolefin geomembranes to thermal aging in the presence of air. Only the procedure for heat exposure is specified, not the test method or specimen. The effect of heat on any particular property may be determined by selection of the appropriate test method and specimen.  
1.2 This practice should be used as a guide to compare thermal aging characteristics of materials as measured by the change in some property of interest. This practice does not predict thermal aging characteristics where interactions between stress, environment, temperature, and time control failure.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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.

General Information

• Status: Historical
• Publication Date: 31-May-2018
• ICS: 83.080.20 - Thermoplastic materials
• Technical Committee: D35 - Geosynthetics
• Drafting Committee: D35.02 - Endurance Properties

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:D5721 −08 (Reapproved 2018)
Standard Practice for
Air-Oven Aging of Polyolefin Geomembranes
This standard is issued under the fixed designation D5721; 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 and Elastomers by Impact
D1238 Test Method for Melt Flow Rates of Thermoplastics
1.1 This practice covers a means for estimating the resis-
by Extrusion Plastometer
tance of polyolefin geomembranes to thermal aging in the
D1505 Test Method for Density of Plastics by the Density-
presence of air. Only the procedure for heat exposure is
Gradient Technique
specified, not the test method or specimen. The effect of heat
D1525 Test Method for Vicat Softening Temperature of
on any particular property may be determined by selection of
Plastics
the appropriate test method and specimen.
D1790 Test Method for Brittleness Temperature of Plastic
1.2 This practice should be used as a guide to compare
Sheeting by Impact
thermal aging characteristics of materials as measured by the
D1870 Practice for Elevated Temperature Aging Using a
change in some property of interest. This practice does not 3
Tubular Oven (Withdrawn 1998)
predict thermal aging characteristics where interactions be-
D3045 Practice for Heat Aging of Plastics Without Load
tween stress, environment, temperature, and time control
D4439 Terminology for Geosynthetics
failure.
E145 Specification for Gravity-Convection and Forced-
1.3 The values stated in SI units are to be regarded as Ventilation Ovens
F412 Terminology Relating to Plastic Piping Systems
standard. No other units of measurement are included in this
standard.
3. Terminology
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3.1 Definitions:
responsibility of the user of this standard to establish appro-
3.1.1 For definitions of general terms used in this standard,
priate safety, health, and environmental practices and deter-
refer to Terminology D4439.
mine the applicability of regulatory limitations prior to use.
3.1.2 aging, n—the process of exposing materials to an
1.5 This international standard was developed in accor-
environment for an interval of time.
dance with internationally recognized principles on standard-
3.1.3 polyolefin, n—a polymer prepared by the polymeriza-
ization established in the Decision on Principles for the
tion of an olefin(s) as the sole monomer(s). (F412)
Development of International Standards, Guides and Recom-
3.1.4 Vicat softening point—the temperature at which a
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee. flat-endedneedleof1-mm circularcrosssectionwillpenetrate
a thermoplastic specimen to a depth of 1 mm under a specified
2. Referenced Documents
load using a selected uniform rate of temperature rise. (D1525)
2.1 ASTM Standards:
4. Significance and Use
D618 Practice for Conditioning Plastics for Testing
D638 Test Method for Tensile Properties of Plastics
4.1 Under the severe conditions of this test, the specimens
D746 Test Method for Brittleness Temperature of Plastics
undergo degradation at a rate that is a function of the thermal
endurance of the geomembrane under examination.
4.2 The elevated temperature for this practice should repre-
This practice is under the jurisdiction of ASTM Committee D35 on Geosyn-
thetics and is the direct responsibility of Subcommittee D35.02 on Endurance
sent conditions that are sufficiently severe to induce failure of
Properties.
polyolefin geomembranes within an abbreviated period of
Current edition approved June 1, 2018. Published June 2018. Originally
time.
approved in 1995. Last previous edition approved in 2013 as D5721 – 08 (2013).
DOI: 10.1520/D5721-08R18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D5721−08 (2018)
4.3 The rate of change of a particular property as a function 8.4 Rotate the shelves from top to bottom and from front to
of temperature may be evaluated using the temperatures and back once a week to ensure even exposure.
times outlined in Practice D3045.
8.5 At the end of an aging interval, remove a set of
4.4 Any correlation between this practice and natural life of specimens and allow them to cool. Test the specimens for the
these materials must be determined for the particular applica-
selected property in accordance with
...

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: D5721 − 08 (Reapproved 2013) D5721 − 08 (Reapproved 2018)
Standard Practice for
Air-Oven Aging of Polyolefin Geomembranes
This standard is issued under the fixed designation D5721; 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 practice covers a means for estimating the resistance of polyolefin geomembranes to thermal aging in the presence of
air. Only the procedure for heat exposure is specified, not the test method or specimen. The effect of heat on any particular property
may be determined by selection of the appropriate test method and specimen.
1.2 This practice should be used as a guide to compare thermal aging characteristics of materials as measured by the change
in some property of interest. This practice does not predict thermal aging characteristics where interactions between stress,
environment, temperature, and time control failure.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.5 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.
2. Referenced Documents
2.1 ASTM Standards:
D618 Practice for Conditioning Plastics for Testing
D638 Test Method for Tensile Properties of Plastics
D746 Test Method for Brittleness Temperature of Plastics and Elastomers by Impact
D1238 Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer
D1505 Test Method for Density of Plastics by the Density-Gradient Technique
D1525 Test Method for Vicat Softening Temperature of Plastics
D1790 Test Method for Brittleness Temperature of Plastic Sheeting by Impact
D1870 Practice for Elevated Temperature Aging Using a Tubular Oven (Withdrawn 1998)
D3045 Practice for Heat Aging of Plastics Without Load
D4439 Terminology for Geosynthetics
E145 Specification for Gravity-Convection and Forced-Ventilation Ovens
F412 Terminology Relating to Plastic Piping Systems
3. Terminology
3.1 Definitions:
3.1.1 For definitions of general terms used in this standard, refer to Terminology D4439.
3.1.2 aging, n—the process of exposing materials to an environment for an interval of time.
3.1.3 polyolefin, n—a polymer prepared by the polymerization of an olefin(s) as the sole monomer(s). (F412)
3.1.4 Vicat softening point—the temperature at which a flat-ended needle of 1 mm1-mm circular cross section will penetrate
a thermoplastic specimen to a depth of 1 mm under a specified load using a selected uniform rate of temperature rise. (D1525)
This practice is under the jurisdiction of ASTM Committee D35 on Geosynthetics and is the direct responsibility of Subcommittee D35.02 on Endurance Properties.
Current edition approved May 1, 2013June 1, 2018. Published May 2013June 2018. Originally approved in 1995. Last previous edition approved in 20082013 as
D5721D5721 – 08 (2013).–08. DOI: 10.1520/D5721-08R13.10.1520/D5721-08R18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
The last approved version of this historical standard is referenced on www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D5721 − 08 (2018)
4. Significance and Use
4.1 Under the severe conditions of this test, the specimens undergo degradation at a rate that is a function of the thermal
endurance of the geomembrane under examination.
4.2 The elevated temperature for this practice should represent conditions that are sufficiently severe to induce failure of
polyolefin geomembranes within an abbreviated period of time.
4.3 The rate of change of a particular property as a function of temperature may be evaluated using the temperatures and times
outlined in Practice D3045.
4.4 Any correlation between this practice and natural life of these materials must be determined for the particular application
in which the materials are to be used.
4.5 Air-oven aging can be used to evaluate and compare the performance of various heat sta
...