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Standard Test Method for Anti-Swelling Effectiveness of Water-Repellent Formulations and Differential Swelling of Untreated Wood When Exposed to Liquid Water Environments
Automaticky přeložený název:
Standardní zkušební metoda pro Anti - Otok Efektivita vodoodpudivý formulací a diferenciální otok neošetřeného dřeva , když je vystavena kapalná voda prostředí
NORMA vydána dne 1.6.2008
Označení normy: ASTM D4446-08
Poznámka: NEPLATNÁ
Datum vydání normy: 1.6.2008
Kód zboží: NS-27251
Počet stran: 4
Přibližná hmotnost: 12 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
anti-swelling, liquid water, water repellent, Antiswelling effectiveness, Differential data, Dimensional change, Exterior exposure tests, Liquid environments, Liquids, Lumber, Soak containers, Swelling, Water-repellant materials/applications, ICS Number Code 79.040 (Wood, sawlogs and sawn timber)
Significance and Use |
This test method is useful in determining the relative anti-swelling efficiency of various water-repellent formulations when applied to wood. It is the initial means of estimating the ability of water-repellent treated wood to perform satisfactorily when exposed to liquid water environments. The swelling differences of untreated wood species when subjected to water immersion can also be determined by this test method. This method is a basic screening test and thus provides an initial determination of the anti-swelling efficiency of water repellents. It is a qualitative method designed to provide a reproducible means of establishing: (1) the anti-swelling efficiency of water-repellent formulations, and (2) the relative swelling of untreated wood species when both are exposed to liquid water environments. |
1. Scope |
1.1 This test method is designed to evaluate the effectiveness of water-repellent compositions for retarding dimensional changes in coated wood submerged in water. It can also be used to measure the differential swelling of untreated wood when exposed to liquid water environments. The compositions tested are designed to be mixed until uniform and applied by brush, roller, dip or spray to an exterior wood surface. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 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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