Standard Test Methods for Direct Moisture Content Measurement of Wood and Wood-Based Materials

Importancia y uso:

4.1 Moisture content is one of the most important variables affecting the properties of wood and wood-based materials. The procedures in these test methods are structured to permit the full range of use from fundamental research to industrial processing. Method A is the reference (primary) standard for determining moisture content of wood and wood-based materials, which is designed for obtaining the most precise values of moisture content consistent with the needs of the user. It provides means of assessing variability contributed by the oven or specimen hygroscopicity, or both. In addition, criteria are described for defining the endpoint in oven-drying. Method B provides relatively simple procedures of measuring moisture content, but generally with a lower precision than Method A. Representativeness of the specimens to the full-size product, including knots, sapwood, and heartwood, needs to be considered. These methods are not recommended for use with treated wood products impregnated with creosote, petroleum, and their solutions where the volatile non-wood chemicals contained in the specimen introduce greater bias than desired in the results.

Subcomité:

D07.01

Referida por:

D3499-19, D0906-20, D2339-20, D4933-16R21, D4577-19R23, D1666-22, D4761-19, D0143-25, D1761-20R25, D5469_D5469M-25, D7031-11R19, D7446-09R17, D6254_D6254M-20, E2579-23B, D6570-18AR23E01, D7433-19, E2618-13R19, D7147-21, D2559-12AR24, D7338-14R23, D3498-19A, D5751-99R19, C1789-24, D3501-24, D0198-22A, D5764-24, D4761-19, D7966_D7966M-16R23, D6815-22A, D7672-24, D0642-25, D4027-98R19, D7033-22, D4444-25, D7478_D7478M-11R17, E2632_E2632M-20, D5652-21, D5456-24, E2707-22, E2126-25, D5824-98R23, E0603-25, G0198-17R23, E2957-17R24, D3500-20, D7119_D7119M-21, E2779-10R17, D7438-20R25, D6573_D6573M-13R20, E0108-25, D6199-18AR24E01, D1185-98AR25, D3044-16R23, D7770-12R19, D6782-19R25, D6643-01R23, D7469-24, D6874-22A, D2718-24, E0084-24, D2719-19, D3043-17R25, D1990-25, E0072-22, D2395-17R22, D0198-22A, D1037-12R20, D5572-95R19, D0143-25, D2719-19

Volúmen:

04.10

Número ICS:

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

Palabras clave:

moisture content; oven-dry basis; oven-drying method; wood; wood-based materials;