GB/T 30801-2014 in English
VALIDHygrothermal performance of building materials and products―Determination of water-vapour transmission properties―Box method
- Issued on:2014-06-24
- Implemented on:2015-02-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$117.00
《GB/T 30801-2014建筑材料及制品的湿热性能 透湿性能的测定 箱式法》由TC191（全国绝热材料标准化技术委员会）归口，主管部门为中国建筑材料联合会。
本标准规定了通过箱式法来测定建筑材料水蒸气渗透性能的试验方法。箱式法主要适用于表面透湿阻不能被忽略的低透湿阻材料。
注:低透湿阻材料指透湿阻不大于1.8×109 ・m2 ・S・Pa/kg(透湿系数不小于5.5×10-8 kg/(m2 ・S・Pa))的
材料。
Scope
This standard specifies the test method for determining the water vapor permeability of building materials by the box method. The box method is mainly suitable for materials with low moisture permeability whose surface moisture permeability cannot be ignored.
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