هل يستوفي GRC معايير أداء مقاومة الحريق؟ اعتماد موثوق لسلامة GRC من الحريق

GRC offers excellent fire resistance, with a fire resistance limit of up to 4 hours and a combustion performance rating of Class A (non-combustible material), fully meeting building fire code requirements. As a fire-resistant building material, GRC has passed comprehensive testing by the National Quality Supervision and Inspection Center for Fireproof Building Materials and has obtained multiple certifications.

In the Shanghai Century Plaza renovation project, the Qinglong GRC curtain wall system underwent rigorous fire testing: fire resistance tests were conducted according to the GB/T 9978 standard. Under the standard fire curve, at 120 minutes the average temperature rise on the unexposed face was ≤140°C and the maximum point temperature rise was ≤180°C, with both integrity and thermal insulation indicators meeting requirements. This outstanding fire performance has led to the widespread application of GRC in high-rise buildings and crowded venues. The GRC panels used in the project do not release toxic gases in a fire and maintain good integrity at high temperatures, providing valuable time for evacuation and firefighting.

Combustion Performance Rating Certification

Tested according to the GB 8624 standard, GRC achieves Class A2 combustion performance, Class t0 smoke toxicity rating, and Class d0 burning droplets rating. This high-level certification allows its use in all types of building premises with no usage restrictions.

Fire Resistance Limit Test Data

100mm thick GRC panels have a fire resistance limit of ≥240 minutes, meeting Class 1 fire resistance requirements. At high temperatures, GRC panels do not spall and maintain good integrity—a performance that is particularly important in tunnel engineering.

High-Temperature Performance Stability

At 400°C, strength retention exceeds 80%, and at 600°C, 50% of strength is still maintained. This high-temperature performance stability ensures that structures do not suddenly collapse in a fire.

Advantages in Fire Protection Construction Applications

GRC can be made into various fire protection components, such as fire-resistant boards and fire-rated ceilings. Used in combination with steel structures, it can replace traditional fire-retardant coatings, improving durability and decorative appeal.

The fire performance of GRC has been verified through authoritative testing and engineering practice, making it a safe and reliable fire-resistant building material.