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ASTM D7238-06(2012)

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

STANDARD published on 1.7.2012

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The information about the standard:

Designation standards: ASTM D7238-06(2012)
Note: WITHDRAWN
Publication date standards: 1.7.2012
SKU: NS-37954
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: American technical standard
Category: Technical standards ASTM

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The category - similar standards:

Geotextiles

Annotation of standard text ASTM D7238-06(2012) :

Keywords:

accelerated, geomembrane, fluorescent UV, temperature, ultraviolet, ICS Number Code 59.080.70 (Geotextiles)

Additional information

Significance and Use

5.1 The use of this apparatus is intended to induce property changes associated with the end use conditions, including the effects of the UV portion of sunlight, moisture, and heat. Exposures are not intended to simulate the deterioration caused by localized weather phenomena, such as atmospheric pollution, biological attack, and saltwater exposure.

5.2 Variation in results may be expected when operating conditions are varied within the accepted limits of this method.

5.3 Test data for one thickness of a geomembrane can not be used as data for other thickness geomembranes made with the same formula (polymer, pigment and stabilizers) since the degradation is thickness related.

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.

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

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 G154.

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

1.5 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

D1238-23a	Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer (Includes all amendments and changes 12/6/2023).
D5885-06	Standard Test Method for Oxidative Induction Time of Polyolefin Geosynthetics by High-Pressure Differential Scanning Calorimetry
D6693-04	Standard Test Method for Determining Tensile Properties of Nonreinforced Polyethylene and Nonreinforced Flexible Polypropylene Geomembranes
G113-24	Standard Terminology Relating to Natural and Artificial Weathering Tests of Nonmetallic Materials
G151-26	Standard Practice for Exposing Materials in Accelerated Test Devices that Use Laboratory Light Sources
G156-24	Standard Practice for Selecting and Characterizing Weathering Reference Materials
G154-23	Standard Practice for Operating Fluorescent Ultraviolet (UV) Lamp Apparatus for Exposure of Materials

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