ASTM D7238-06(2012)
Standard Test Method for Effect of Exposure of Unreinforced Polyolefin Geomembrane Using Fluorescent UV Condensation Apparatus

Standard No.
ASTM D7238-06(2012)
Release Date
2006
Published By
American Society for Testing and Materials (ASTM)
Status
Replace By
ASTM D7238-06(2017)
Latest
ASTM D7238-20
Scope
1.1 This 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.

1.2 Test 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.

1.3 This 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

ASTM D7238-06(2012) history

  • 2020 ASTM D7238-20 Standard Test Method for Effect of Exposure of Unreinforced Polyolefin Geomembrane Using Fluorescent UV Condensation Apparatus
  • 2017 ASTM D7238-06(2017) Standard Test Method for Effect of Exposure of Unreinforced Polyolefin Geomembrane Using Fluorescent UV Condensation Apparatus
  • 2006 ASTM D7238-06(2012) Standard Test Method for Effect of Exposure of Unreinforced Polyolefin Geomembrane Using Fluorescent UV Condensation Apparatus
  • 2006 ASTM D7238-06 Standard Test Method for Effect of Exposure of Unreinforced Polyolefin Geomembrane Using Fluorescent UV Condensation Apparatus


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