Standard Test Method for Hygroscopic Properties of Fire-Retardant Wood and Wood-Based Products

Importancia y uso:

4.1 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.

4.2 The results obtained with this standard are important in identifying treatments with low hygroscopic properties.

4.3 Results can be useful in determining exposure limitations in service for specific treated products.

4.4 Building codes and other specifications for fire-retardant-treated wood for interior use include requirements based on this test method.

Subcomité:

D07.07

Referida por:

D8223-19

Volúmen:

04.10

Número ICS:

79.040 (Wood, sawlogs and sawn timber), 79.060.01 (Wood-based panels in general)

Palabras clave:

fire-retardant treated woods; hygroscopicities; moisture contents;