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ASTM D 7238 : 2006 : R2012

ASTM D 7238 : 2006 : R2012

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Standard Test Method for Effect of Exposure of Unreinforced Polyolefin Geomembrane Using Fluorescent UV Condensation Apparatus

Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Superseded by

ASTM D 7238 : 2006 : R2017

Language(s)

English

Published date

01-07-2012

Publisher

American Society for Testing and Materials

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Hardcopy - English
PDF - English
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CONTAINED IN VOL. 04.09, 2017 Establishes the specific procedures and test conditions that are applicable for exposure of unreinforced polyolefin geomembranes to fluorescent UV radiation and condensation.

Committee
D 35
DocumentType
Test Method
Pages
4
ProductNote
Reconfirmed 2012
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

1.1This standard covers the specific procedures and test conditions that are applicable for exposure of unreinforced polyolefin geomembranes to fluorescent UV radiation and condensation.

Note 1—Polyolefin geomembranes include high density polyethylene (HDPE), linear low density polyethylene (LLDPE), flexible polyproplyene (fPP), etc.

1.2Test specimens are exposed to fluorescent UVA 340 lamps under controlled environmental conditions. UVA 340 lamps are standard for this method.

Note 2—Other types of fluorescent UV lamps, such as UVB-313, can also be used based upon discussion between involved parties. However, if the test is ran with another type of fluorescent UV lamps, such as UVB-313, this should be considered as a deviation from the standard and clearly stated in the test report. UVB-313 and UVA-340 fluorescent lamps generate different amount of radiant power in different wavelength ranges; thus, the photochemical effects caused by these different lamps may vary.

1.3This method covers the conditions under which the exposure is to be performed and the test methods for evaluating the effects of fluorescent UV, heat and moisture in the form of condensation on geomembranes. General guidance is given in Practices G151 and G154.

1.4The values listed in SI units are to be regarded as the standard.

1.5This 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.

ASTM D 5819 : 2018 Standard Guide for Selecting Test Methods for Experimental Evaluation of Geosynthetic Durability

ASTM D 1238 : 2013 : REDLINE Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer
ASTM G 156 : 2017 : REDLINE Standard Practice for Selecting and Characterizing Weathering Reference Materials
ASTM G 154 : 2016 : REDLINE Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Nonmetallic Materials
ASTM G 113 : 2016 : REDLINE Standard Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials

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