Rubber and bitumen coatings
BIOGO-NRC-T
Special Non-Curing Rubberized Asphalt Coating
High-temperature · permanently non-curing material
A special non-curing rubberized asphalt with enhanced heat stability for hot climates and composite membrane systems.
Product overview
Product overview and technical properties.
BIOGO-NRC-T is a specially formulated non-curing rubberized asphalt waterproof coating based primarily on modified asphalt with selected additives. Manufactured through a dedicated process, it remains a tacky paste throughout its service life and forms a durable waterproofing layer.
Technical data
Technical standard
T/CBMF 44-2019 values from the supplied BIOGO-NRC-T TDS.
| Property / condition | Technical requirement |
|---|---|
| Flash point | ≥180°C |
| Solids content | ≥98% |
| Adhesion - dry and damp substrate | 100% cohesive failure within coating |
| Extensibility | ≥15 mm |
| Low-temperature flexibility | -20°C, no cracking |
| Heat resistance | 90°C; no sliding, flowing or dripping |
| Self-healing | No water penetration |
| Water-migration resistance | 0.6 MPa; no migration |
| Heat aging, 70°C for 168 h - extensibility | ≥15 mm |
| Heat aging, 70°C for 168 h - low-temperature flexibility | -15°C, no cracking |
| Acid resistance - 2% H₂SO₄ solution | No appearance change; extensibility ≥15 mm; mass change ±2.0% |
| Alkali resistance - 0.1% NaOH plus saturated Ca(OH)₂ solution | No appearance change; extensibility ≥15 mm; mass change ±2.0% |
| Salt resistance - 3% NaCl solution | No appearance change; extensibility ≥15 mm; mass change ±2.0% |
| Oil bleeding | ≤2 filter-paper sheets |
| Stress relaxation - untreated | ≤35% |
| Stress relaxation - after heat aging at 70°C for 168 h | ≤35% |
Technical data
Application performance
| Item | Requirement |
|---|---|
| Slip resistance with bonded membrane | No sagging or slipping at 90° |
| Tack retention | ≥60 min |
Technical data
Package
| Item | Value |
|---|---|
| Package | 20 kg/pail |
Product features
Performance and advantages
Permanently non-curing with excellent self-healing, creep and adhesion
Accommodates substrate deformation and reseals local damage
Bridges cracks and seals T-joints in membrane laps
Repeated external loading does not impair waterproofing performance
Develops continuous full-surface adhesion to the substrate and waterproof membrane
High solids allow the design thickness to be formed in one application without curing time
Resistant to material loss, chemical attack and low temperatures
Remains free from sliding, flowing and dripping for 2 hours at 90°C
Typical application areas
Where this product fits
Composite waterproofing systems
Class I and II underground works and non-exposed roofs
Class I waterproofing of planted roofs or roof slabs
Complex details, difficult workmanship and high-risk leakage areas
Transport and Storage
Packaged in lidded steel pails; store different product types separately and prevent cross-contamination.
Keep away from fire, sunlight and rain; prevent impact and maintain ventilation below 40°C.
Shelf life is at least 12 months under stated conditions.
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