T/SGFS 005-2020 Spaying Quick-curing Rubber Asphalt Waterproof Coating

Scope

Main Technical Content: 6.1 Appearance After mixing, the components of the rubber asphalt emulsion (Component A) should be uniform in color, free from gels, lumps, or filamentous substances. The demulsifier (Component B) should be free from lumps and able to form a homogeneous liquid after dissolving in water. 6.2 Physical and Mechanical Properties The physical and mechanical properties of the product shall comply with the requirements specified in Table 1. **Table 1: Physical and Mechanical Properties** **Item** **Indicator** 1 Solid content (%) ≥55 2 Gel time (s) ≤53 3 Drying time (h) ≤24 4 Heat resistance (120±2°C): No flow, slippage, or dripping 5 Waterproofness 0.3 MPa at 30 minutes 6 Bond strength (MPa) ≥0.40 on dry substrates ≥0.40 on wet substrates 7 Elastic recovery rate (%) ≥85 8 Waterproofness of nail rods No water seepage 9 Water absorption (24 h) ≤2.0% 10 Low-temperature flexibility b. No cracking at -20°C without treatment c. No cracking or breakage at -15°C after alkali treatment d. No cracking or breakage after acid treatment e. No cracking or breakage after salt treatment f. No cracking or breakage after heat treatment g. No cracking or breakage after UV treatment 11 Tensile properties Tensile strength (MPa) ≥0.80 without treatment Elongation at break (%) ≥1000 without treatment ≥800 after alkali treatment ≥600 after acid treatment ≥400 after salt treatment ≥300 after heat treatment ≥200 after UV treatment **a** The adhesive substrate can be replaced with other substrates according to the requirements of both suppliers and customers. **b** The suppliers and customers can agree on lower low-temperature flexibility indicators. 6.3 Limits on Harmful Substances The content of harmful substances in the product shall comply with the requirements of JC 1066—2008 for Class B Water-Based Waterproof Coatings.

Development Information

Related Standards