Semnificație și utilizare

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, și (2) the relative expansion of untreated wood species when exposed to a liquid water environment.

ASTM D4446-13 Standard Test Method for Anti-swelling Effect of Waterproofing Formulations and Differential Expansion of Untreated Wood When Exposed to Liquid Water

Etapa 1: Domeniul de aplicare

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, rolling, 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; Prin urmare, each system should be used independently. Combining values from two systems can result in non-compliance.

1.3 Acest standard nu este destinat să abordeze toate preocupările legate de siguranță, dacă există, asociat cu utilizarea acestuia. Este responsabilitatea utilizatorilor acestui standard de a stabili practici adecvate de securitate și sănătate și de a determina aplicabilitatea restricțiilor de reglementare înainte de utilizare..