T/CWA 501-2021 Active Group standards

T/CWA 501-2021 Kee Waterproofing Roofing Membrane Technical Standard for Elastomeric Roofing Membrane Sheet

Publish Date: 2021-10-18 Implement Date: 2021-11-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CWA 501-2021

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Building materials products

ICS Name: Waterproof

Publish Date: 2021-10-18

Implement Date: 2021-11-01

Scope

Scope: This standard is formulated to regulate the technical application of ketene-ethylene copolymer waterproofing membranes in roofing projects, ensure project quality, and establish technical requirements for the design, construction, and quality acceptance of ketene-ethylene copolymer waterproofing membranes in new, expanded, and renovated industrial and civil buildings. This standard applies to roofing projects where ketene-ethylene copolymer waterproofing membranes are used as waterproofing layers in first-class waterproofing roofing projects with a design service life of not less than 20 years. Main technical content: 1. The main technical content of this standard includes: general provisions, terminology, basic requirements, materials, design, construction, quality acceptance, and maintenance and care. 2. Ketene-ethylene copolymer waterproofing membranes are suitable for first-class waterproofing roofing projects with a design service life of not less than 20 years. 3. The minimum thickness of ketene-ethylene copolymer waterproofing membranes shall comply with the following provisions: - Minimum thickness (mm) of ketene-ethylene copolymer waterproofing membranes - Design service life ≥ 20 years - ≥ 25 years - ≥ 30 years - Minimum thickness - 0.9 - 1.2 - 1.5 4. Ketene-ethylene copolymer waterproofing membranes shall be accompanied by a product quality warranty of not less than 20 years provided by the manufacturer. 5. Ketene-ethylene copolymer waterproofing membranes are divided into fabric-reinforced type (P) and fabric-reinforced with backing type (PL). Their main performance indicators and test methods shall comply with the following provisions: - Performance indicators and test methods of ketene-ethylene copolymer waterproofing membranes - Item - Indicator - Test method - 1 - Tensile properties - Maximum tensile strength/(N/cm) - ≥ 500 - Elongation at maximum tensile streng

Development Information

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