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ASTM D7238-06(2012)
Standard Test Method for Effect of Exposure of Unreinforced Polyolefin Geomembrane Using Fluorescent UV Condensation Apparatus
Automaticky preložený názov:
Štandardná skúšobná metóda pre účinku vystavenia unreinforced Polyolefín geomembrány Použitie Fluorescent UV kondenzácii vodných pár Prístroje
NORMA vydaná dňa 1.7.2012
Informácie o norme:
Označenie normy: ASTM D7238-06(2012)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.7.2012
Kód tovaru: NS-37954
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM D7238-06(2012) :
Keywords:
accelerated, geomembrane, fluorescent UV, temperature, ultraviolet, ICS Number Code 59.080.70 (Geotextiles)
Doplňujúce informácie
| 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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