This standard specifies the instruments and materials, test pieces, test procedures and test results for the flexibility test of asphalt waterproofing membranes. This standard is applicable to the acceptance test and arbitration test of petroleum asphalt paper-based felt, oil-paper waterproofing membrane (hereinafter referred to as membrane) and other waterproofing membranes that are allowed to adopt this standard.
GB/T 328.7-1989 history
2007GB/T 328.14-2007 Test methods for building sheets for waterproofing Part 14: Bitumen sheets for waterproofing-flexibility at low temperature
1989GB/T 328.7-1989 Test methods for asphalt waterproof roll roofing--Flexibility of asphalt
GB/T 328.7-1989 Test methods for asphalt waterproof roll roofing--Flexibility of asphalt was changed to GB/T 328.14-2007 Test methods for building sheets for waterproofing Part 14: Bitumen sheets for waterproofing-flexibility at low temperature.