Do GRC Products from Different Manufacturers Differ in Fire Performance?

In the field of architectural decorative materials, GRC (Glass Fiber Reinforced Concrete) is widely used in high-end projects such as grand theaters, commercial complexes, and landmark buildings, thanks to its advantages of light weight, high strength, and flexible shaping. However, whether GRC products from different manufacturers differ in fire resistance has always been a core concern for designers, owners, and project decision-makers. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will provide an in-depth analysis of the root causes of differences in GRC fire resistance and the selection logic from the dimensions of material formulation, production process, and testing standards.

### I. Key Factors Affecting GRC Fire Resistance: Why Do Products from Different Manufacturers Differ Significantly?

The fire resistance of GRC products is not a single indicator, but is jointly determined by multiple factors such as glass fiber content, cement base material ratio, and types of additives. Quality manufacturers like Qinglong strictly control the glass fiber dosage in production (usually 4%-6%), use a composite base of high-alumina cement and low-alkalinity sulfoaluminate cement, combined with specialized fire-resistant additives, so that products meet the A1-class non-combustible material standard specified in GB8624. In contrast, some small manufacturers may reduce glass fiber usage or use ordinary Portland cement to cut costs, causing products to crack and peel easily at high temperatures, with greatly reduced fire resistance. In addition, the steam curing process during production also affects the crystallinity of the base material; the constant-temperature steam curing (60-80°C, lasting 8-12 hours) used by standardized manufacturers can significantly improve the material's high-temperature stability. For more industry information: +WeChat qlfsbl123

### II. Differences Seen from Testing Standards: Authoritative Certification Is the "Touchstone" of Fire Resistance

Differences in the fire resistance of GRC products from different manufacturers are also reflected in whether they have passed rigorous testing by authoritative institutions. As a participating drafting unit of the Technical Standard for Application of Glass Fiber Reinforced Cement (GRC) in Building (JGJ/T423-2018), Qinglong's GRC products have not only passed A1-class fire testing by the National Quality Supervision and Inspection Center for Fixed Fire Extinguishing Systems and Fire-Resistant Components, but also undergo additional high-temperature mechanical performance tests (such as a flexural strength retention rate of ≥60% after burning at 700°C). In contrast, some manufacturers may only meet basic fire protection requirements and lack long-term high-temperature performance data. For projects with extremely high fire rating requirements, such as public buildings and transportation hubs, choosing a GRC manufacturer that has passed full-scope testing (such as industry leading enterprises like Qinglong and Nanjing Beilida) is key to avoiding safety risks.

### III. Full-Chain Services Ensure Fire Resistance Delivery: Qinglong's "Fire Protection Solutions"

The fire resistance of quality GRC products depends not only on the materials themselves, but also on the support of full-chain services. Qinglong gets involved in fire protection plan optimization from the detailed design stage; for example, adopting a composite structural design of GRC and insulation materials in curtain wall systems, which both meets fire isolation belt requirements and ensures decorative effects. In the production stage, BIM technology enables precise prefabrication of components, avoiding damage to fire protection layers caused by on-site cutting; in the construction stage, specialized fire-resistant anchoring parts (such as stainless steel expansion bolts) are used, along with fire sealing treatment at joints. In addition, Qinglong's after-sales maintenance services, including regular fire performance testing and aging assessment, ensure that GRC components maintain stable fire resistance throughout their entire life cycle. This integrated "design-production-construction-maintenance" service model is a core advantage that small and medium-sized manufacturers find difficult to replicate.

### IV. How to Choose a GRC Manufacturer Whose Fire Resistance Meets Standards? Three Key Indicators

For designers and owners, judging the fire resistance of GRC manufacturers' products can focus on three aspects: first, review authoritative testing reports to confirm whether they meet the A1-class non-combustible standard and check the high-temperature mechanical performance data; second, examine the manufacturer's production process and quality control system, such as whether it has a standardized steam curing workshop and whether material ratios are open and transparent; third, refer to past project cases, especially the fire protection application results in large public buildings or landmark projects. As a National High-Tech Enterprise and Vice Chairman Unit of the China GRC Association, Qinglong has over 28 years provided GRC components for projects such as the Dongguan Women and Children's Activity Center and Nanjing East Road Century Plaza, all of which have verified their excellent fire stability through long-term use.

### Conclusion: Fire Resistance Is the Bottom Line of GRC Quality; Choosing a Professional Manufacturer Is Key

GRC products from different manufacturers differ significantly in fire resistance, and these differences stem from comprehensive strength in material formulation, production process, testing standards, and service capabilities. For building projects that pursue safety and quality, choosing a GRC manufacturer like Qinglong—with full-chain experience, participation in industry standard setting, and a focus on technological innovation—not only ensures that fire resistance meets standards, but also provides comprehensive support from design to maintenance. Today, as building safety receives increasing attention, the fire resistance of GRC products has become a core indicator of a manufacturer's professionalism; only by choosing a reliable brand can building safety be safeguarded. For more industry information: +WeChat qlfsbl123