This part of GB/T 13477 specifies the method for the determination of the pollution of building sealing materials. The test method A in this part is applicable to the determination of the exudation and diffusion degree of components of single-component solvent-based sealing materials. Other types of sealing materials can also be adopted by reference. The test method B in this part is applicable to the determination of the pollution of elastic sealing materials to porous substrates (such as marble, limestone, sandstone, granite, etc.) under accelerated test conditions.
GB/T 13477.20-2002 history
2017GB/T 13477.20-2017 Test method for building sealants—Part 20:Determination of staining
2002GB/T 13477.18-2002 Test method for building sealants Part 18: Determination of adhesion-in-peel