المعنى والاستخدام

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, و (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

خطوة 1: نِطَاق

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. قد لا تكون القيم المذكورة في كل نظام متكافئة تمامًا; لذلك, وينبغي استخدام كل نظام بشكل مستقل. يمكن أن يؤدي الجمع بين القيم من نظامين إلى عدم الامتثال.

1.3 لا يهدف هذا المعيار إلى معالجة جميع المخاوف المتعلقة بالسلامة, لو اي, المرتبطة باستخدامه. تقع على عاتق مستخدمي هذا المعيار مسؤولية إنشاء ممارسات السلامة والصحة المناسبة وتحديد إمكانية تطبيق القيود التنظيمية قبل الاستخدام..