It is reported that on September 1, 2009, the two major national standards of the waterproof industry 'elastomer modified bituminous waterproof membrane (GB18242-2008)', 'plastic modified bituminous membrane (GB18243-2008)' will be formally implemented.
Elastomer-modified bitumen membrane (SBS) and plastic-modified bitumen membrane (APP) are the most commonly used waterproof materials in China and even in the world. Glass fiber reinforced polyester felts have been added to the new standard, increasing the length by 5mm. The thickness of the product is 2mm, which increases the indexes such as the secondary peak tensile force and the heat aging oil permeability, and clearly stipulates the thickness of the asphalt coating on the lower surface of the coil and the adhesion of the mineral particles.
The revision of national standards for elastomer modified bitumen membrane (SBS) and plastic modified bitumen membrane (APP) has important significance and influence on the development of China's building waterproofing industry and the adjustment of industrial structure.
In 2009, the two major national standards of the waterproof industry were promulgated