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    ASTM D5721 - 08(2013)

    Standard Practice for Air-Oven Aging of Polyolefin Geomembranes

    Active Standard ASTM D5721 | Developed by Subcommittee: D35.02

    Book of Standards Volume: 04.13

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    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.

    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 and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    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

    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

    ICS Code

    ICS Number Code 83.080.20 (Thermoplastic materials)

    UNSPSC Code

    UNSPSC Code 30121701(Geomesh)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/D5721-08R13

    Citation Format

    ASTM D5721-08(2013), Standard Practice for Air-Oven Aging of Polyolefin Geomembranes, ASTM International, West Conshohocken, PA, 2013, www.astm.org

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