Arti dan kegunaannya

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

ASTM D4446-13 Metode Uji Standar untuk Efek Anti Pembengkakan Formulasi Tahan Air dan Ekspansi Diferensial Kayu yang Tidak Diolah Saat Terkena Air Cair

Melangkah 1: Cakupan

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. Nilai-nilai yang dinyatakan dalam setiap sistem mungkin tidak sama persis; Karena itu, setiap sistem harus digunakan secara independen. Menggabungkan nilai-nilai dari dua sistem dapat mengakibatkan ketidakpatuhan.

1.3 Standar ini tidak dimaksudkan untuk mengatasi semua masalah keselamatan, jika ada, terkait dengan penggunaannya. Pengguna standar ini bertanggung jawab untuk menetapkan praktik keselamatan dan kesehatan yang sesuai dan menentukan penerapan pembatasan peraturan sebelum digunakan..