GB/T 23457-2009
AbolishedPre-applied and wet installed waterproof sheets
预铺/湿铺防水卷材
Application Summary AI generated
GB/T 23457-2009 specifies the classification, technical requirements, test methods, and inspection rules for pre-applied and wet installed waterproof sheets used in construction. It applies to polymer-modified bitumen or synthetic polymer sheets designed for direct adhesion to concrete substrates in underground engineering, such as basements, tunnels, and subway structures. The standard ensures these sheets provide reliable waterproofing when installed by pre-applied (adhered before concrete pouring) or wet-applied (adhered to fresh concrete) methods.
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