JG/T 309-2011 in English

本标准规定了外强涂料水蒸气透过滤测定方法及分级的术语和定义、原理、仪器和材料、试件、步骤、结果表述、精确度、分级和试验报告。
本标准适用于工业与民用建筑的砖、石、混凝土等多孔基材上使用的外墙涂料。

Scope

This standard specifies the terms and definitions, principles, instruments and materials, test pieces, procedures, result expression, accuracy, classification and test reports for the measurement method and classification of water vapor transmission rate of exterior wall coatings. This standard applies to exterior wall coatings used on porous substrates such as bricks, stones, and concrete in industrial and civil buildings. This standard does not apply to products that form films or affect the porosity of porous substrates.