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Standard Test Method for Hygroscopic Properties of Fire-Retardant Wood and Wood-Based Products
STANDARD published on 1.2.2008
Designation standards: ASTM D3201-08
Note: WITHDRAWN
Publication date standards: 1.2.2008
SKU: NS-22840
The number of pages: 3
Approximate weight : 9 g (0.02 lbs)
Country: American technical standard
Category: Technical standards ASTM
Keywords:
fire-retardant treated wood, hygroscopicity, moisture content, Fire-retardant-treated wood/wood-base materials, Hygroscopic materials/properties/tests, Moisture analysis--wood products, Relative humidity (RH), Wood products (fire-retardant-treated), ICS Number Code 79.040 (Wood, sawlogs and sawn timber), 79.060.01 (Wood-based panels in general)
Significance and Use | ||
The hygroscopic properties of wood and wood-based products treated with fire-retardant chemicals are often greater than for untreated products. This is particularly true at the higher relative humidity conditions. This higher hygroscopicity sometimes is the cause for staining, decay, poor paint adhesion, and migration and exuding of chemicals and moisture at the high humidities. Corrosion of metal fasteners sometimes also occurs. The results obtained with this standard are important in identifying treatments with low hygroscopic properties. Results can be useful in determining exposure limitations in service for specific treated products. Building codes and other specifications for fire-retardant-treated wood for interior use include requirements based on this test method. |
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1. Scope | ||
1.1 This test method prescribes the procedure for determining the moisture content of fire-retardant-treated wood and wood–based product samples after exposure to a standard high relative humidity condition of 92 ± 2 % at 27 ± 2°C (81 ± 4°F). 1.2 The text of this test method references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of this test method. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.4 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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