Signification et utilisation

3.1 This test method can be used to determine the anti-swelling efficiency of various waterproof formulations when applied to wood. This is the initial method for assessing the ability of waterproofed wood to operate satisfactorily when exposed to a liquid water environment.

3.2 Differences in the swelling of untreated wood species when immersed in water can also be determined by this test method.

3.3 The method is a basic screening test, so that the anti-swelling efficiency of the water repellent can be preliminarily determined. This is a qualitative approach designed to provide a reproducible method to establish: (1) the anti-swelling efficiency of a waterproofing formula, et (2) the relative expansion of untreated wood species when exposed to a liquid water environment.

Méthode d'essai standard ASTM D4446-13 pour l'effet anti-gonflement des formulations imperméabilisantes et l'expansion différentielle du bois non traité lorsqu'il est exposé à de l'eau liquide

Étape 1: Portée

1.1 This test method is designed to evaluate the effectiveness of a waterproofing composition over dimensional changes in coated wood immersed in water. It can also be used to measure differential expansion of untreated wood when exposed to a liquid water environment. The tested compositions are designed to be mixed evenly and applied to an exterior wood surface by brushing, roulant, dipping or spraying.

1.2 Values expressed in SI units or inch-pound units should be considered separately as a standard. The values stated in each system may not be exactly equivalent; Donc, chaque système doit être utilisé indépendamment. Combining values from two systems can result in non-compliance.

1.3 Cette norme n'est pas destinée à répondre à tous les problèmes de sécurité, si seulement, associé à son utilisation. Il est de la responsabilité des utilisateurs de cette norme d'établir des pratiques de sécurité et de santé appropriées et de déterminer l'applicabilité des restrictions réglementaires avant utilisation..