Rubber and bitumen coatings
SRC
Spray Rapid-Setting Rubber Asphalt
Two-component · water-based spray membrane
A mechanically sprayed rubber-asphalt system that gels in 3–5 seconds for roofs, basements and irregular details.
Product overview
Product overview and technical properties.
SRC spray rapid-setting rubber asphalt waterproof coating uses anionic modified emulsified asphalt and high-molecular polymer latex as Component A and a demulsifier as Component B. During spray application, the two components combine instantly to form a waterproof, anti-corrosion and anti-seepage membrane. The cured coating combines the elasticity of rubber with the viscosity of asphalt, bonds well to damp concrete substrates and provides excellent aging resistance.
Technical data
Product classification and spray ratio
| Item | Value |
|---|---|
| Component A package | 50 kg/barrel |
| Component B package | 10 kg/barrel |
| Component B solution | 1 kg B + 9 kg water |
| Spray ratio | A:B solution = 5:1 |
| Reference dosage | 1.7 ± 0.1 kg/m²/mm |
| Gel time | 3-5 s |
Technical data
Technical standard
Q/0783 WHY 006-2020 values from the supplied SRC TDS.
| Property | Indicator |
|---|---|
| Appearance | Black and brown |
| Volatile organic compounds | Solvent-free / VOC-free |
| Solid content | ≥55% |
| Heat resistance | 140 ± 2°C; no flowing, sliding or dripping |
| Water impermeability | 0.30 MPa for 30 min; no seepage |
| Bond strength - dry substrate | ≥0.40 MPa |
| Bond strength - wet substrate | ≥0.40 MPa |
| Gel time | ≤10 s |
| Dry time | ≤24 h |
| Elastic recovery | ≥90% |
| Nail-bar watertightness | No seepage |
| Water absorption, 24 h | ≤2.0% |
| Tensile strength - standard condition | ≥1.4 ± 0.2 MPa |
| Elongation at break - standard condition | ≥1200 ± 100% |
| Elongation at break - after alkali treatment | ≥800% |
| Elongation at break - after acid treatment | ≥800% |
| Elongation at break - after salt treatment | ≥800% |
| Elongation at break - after heat treatment | ≥800% |
| Elongation at break - after UV treatment | ≥800% |
| Water resistance - appearance | No cracking, delamination, bubbling or breakage |
| Water resistance - bond-strength retention | ≥80% |
Product features
Performance and advantages
Elongation reaches 1,000% with 90% elastic recovery, helping accommodate structural deformation
Water-based and environmentally responsible from raw-material production through spray application
Mechanical spraying is simple and efficient, suits irregular and complex surfaces, and forms a cured film in 3–5 seconds
Provides waterproofing, anti-corrosion and anti-seepage functions
No flow at 100°C and suitable for reinforced concrete, steel, wood and other substrates
Typical application areas
Where this product fits
Basements and roofs in industrial and civil buildings
Industrial protection in the chemical and electric-power industries
Protection of water-conservancy facilities and lining of underground-space projects
VOC-limited and national-defense projects
Transport and Storage
The product is nonflammable and nonexplosive and may be transported as general cargo.
Protect from freezing in winter; do not store below 0°C.
Avoid sunlight and rain in summer and store at 5–40°C.
Shelf life is 10 months; stir Component A after extended storage before use.
Suitability depends on substrate condition, exposure, climate, detailing, film build and the approved project system. Complete a representative adhesion and compatibility trial before full application.
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