Does GRC Meet Fire Performance Standards? An In-Depth Analysis of the Current Status and Standards of GRC Material Fire Resistance

The Firewall for Building Safety: An In-Depth Analysis of GRC Fire Performance and Industry Standard Practices

In building safety systems, fire performance is one of the core criteria for material selection. As a dedicated player in the Glass Fiber Reinforced Concrete (GRC) industry, Qinglong Group, with 28 years of full industry chain experience, has witnessed the evolution of GRC materials from auxiliary decorative components to mainstream fire-resistant building materials. Based on authoritative standards such as the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), this article systematically analyzes the current state of GRC fire performance, testing standards, and engineering practice value, providing professional decision-making references for designers and owners.

The Fire-Resistant Genes of GRC Materials: Inherent Advantages from Composition to Performance

GRC materials are composed of cement-based cementitious materials, alkali-resistant glass fibers, fine aggregates, and water, making them inherently inorganic non-combustible materials. The national standard GB8624-2012 Classification for Burning Behavior of Building Materials and Products explicitly classifies GRC products as Class A1 non-combustible materials, meaning they will neither produce toxic smoke nor fuel the spread of flames in a fire. GRC components produced by Qinglong have been verified by national-level testing institutions, with a fire resistance limit of over 2 hours, far exceeding the fire protection standards of ordinary decorative materials. This inherent advantage has led to the widespread application of GRC in curtain wall systems of densely populated venues such as grand theaters and museums.

Industry Standards and Testing Systems: Quantified Assurance of GRC Fire Performance

As a key contributing unit in the revision of the standard Glass Fiber Reinforced Cement (GRC) Decorative Products (JC/T940-2022), Qinglong participated in building a complete testing system for GRC fire performance. This standard stipulates that GRC products must pass multiple indicator tests including combustion heat value, smoke toxicity, and flame spread. Taking Qinglong's GRC exterior wall panels as an example, their thermal conductivity is as low as 0.15W/(m·K), which can effectively block heat transfer in a fire and buy precious time for personnel evacuation. It is worth noting that GRC products from different manufacturers differ significantly in fire performance due to variations in fiber content and mixing processes; it is recommended to prioritize products from companies that participated in standard formulation when making selections.

Fire Protection Applications in Engineering Practice: Full-Chain Control from Theory to Implementation

In the Dongguan Women and Children's Activity Center project, Qinglong adopted a customized GRC curtain wall system and optimized joint design through BIM technology, enabling the entire building to achieve Grade I fire resistance rating. The project innovatively adopted a fire-resistant rock wool composite GRC panel structure, achieving a perfect unity of decoration and fire protection, and won the AALBORG WHITE Cup GRC Building Engineering Innovation Award. Practice has proven that the fire performance of GRC materials depends not only on their own quality, but also requires full-chain control across detailed design, manufacturing, and installation. Qinglong's "Fire Performance Traceability System" can trace raw material inspections, production process parameters, and installation quality records for each batch of products through RFID chips, providing full life-cycle fire safety assurance for projects.

Comparison and Selection: GRC's Competitive Advantages Among Building Fire-Resistant Materials

Compared with traditional stone curtain walls, GRC offers the advantages of lightweight construction (weighing only 1/4 of stone) and flexible shaping, while maintaining equal or even better fire performance; compared with organic composite materials such as GRP, GRC's characteristics of no dripping and no toxic gas release at high temperatures are more outstanding. For projects seeking a balance between architectural aesthetics and safety performance, GRC demonstrates unique comprehensive value. Qinglong recommends that designers involve material suppliers at the design stage and achieve integrated solutions combining fire-resistant construction with architectural form through parametric design. For example, in the Nanjing East Road Century Plaza renovation project, the combined application of light-transmitting GRC components and fire-rated glass satisfied fire codes while achieving artistic light and shadow effects.

Building fire safety is a systematic project, and material selection is the first line of defense. As a Class A1 non-combustible material, GRC's fire performance has been validated by industry standards and tested through engineering practice, making it an ideal choice for high-end building curtain walls and decorative systems. Qinglong Group will continue to rely on 28 years of technical accumulation, upholding the mission of "Creating Beautiful Architecture," to provide customers with full-chain fire protection solutions from detailed design to after-sales maintenance, helping to create architectural works that combine safety and aesthetics. Choosing compliant GRC products that meet standards means building a solid and reliable firewall for building safety.