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ASTM D7238-06(2012)
Standard Test Method for Effect of Exposure of Unreinforced Polyolefin Geomembrane Using Fluorescent UV Condensation Apparatus
Automatische name übersetzung:
Standard Test Method for Einfluss der Exposition von unverstärkten Polyolefin Geomembrane mit fluoreszierenden UV Kondensationsapparatur
NORM herausgegeben am 1.7.2012
Informationen über die Norm:
Bezeichnung normen: ASTM D7238-06(2012)
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 1.7.2012
SKU: NS-37954
Zahl der Seiten: 4
Gewicht ca.: 12 g (0.03 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Kategorie - ähnliche Normen:
Die Annotation des Normtextes ASTM D7238-06(2012) :
Keywords:
accelerated, geomembrane, fluorescent UV, temperature, ultraviolet, ICS Number Code 59.080.70 (Geotextiles)
Ergänzende Informationen
| 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. |
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| 2. Referenced Documents | ||||||||||||||
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