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Dual Safeguarding of Safety and Aesthetics: Analysis of GRC Curtain Wall Fire Ratings and Engineering Practice Guide

In modern building curtain wall design, fire performance has become one of the core indicators for measuring building safety. As a technology specialist in the field of glass fiber reinforced concrete (GRC), Qinglong Group draws on 28 years of full industry chain experience and, in line with the requirements of the Code for Fire Protection Design of Buildings GB50016, presents the industry with a professional interpretation of GRC curtain wall fire performance and practical engineering solutions.

Technical Foundation and Certification Standards of GRC Curtain Wall Fire Ratings

GRC material inherently possesses the natural advantage of Class A non-combustibility. Its main components are alkali-resistant glass fiber and Portland cement, and testing has verified that its combustion performance reaches Class A1 under the GB8624-2012 standard. By adjusting the glass fiber content (typically 6-8%) and special mix design, the GRC curtain wall panels produced by Qinglong achieve a graded breakthrough of 1.5-3 hours fire resistance while maintaining flexural strength ≥15MPa. It is worth noting that the overall fire performance of a curtain wall system must pass structural integrity testing. The Technical Standard for Building Applications of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), compiled with Qinglong's participation, clearly specifies the fire isolation construction requirements between GRC curtain walls and the main structure.

Full-Chain Control: Fire Protection Solutions from Material Formulation to Engineering Application

In the material production stage, Qinglong adopts a fully automated spray-forming process to ensure three-dimensional uniform distribution of glass fibers within the matrix, forming a continuous fire-resistant skeleton structure. Addressing the special needs of super high-rise projects, the lightweight GRC fire-resistant composite panel (surface density ≤120kg/㎡) developed by Qinglong passed the scientific and technological achievement appraisal of the Ministry of Housing and Urban-Rural Development, achieving a breakthrough in fire compartmentation for unitized curtain wall systems in a 300-meter landmark project in Nanjing. During the construction stage, Qinglong's original "3D laser positioning + modular installation" technology ensures seamless joining of fire-resistant sealing strips with GRC components. The Dongguan Women and Children's Activity Center project undertaken by Qinglong won the first GRC Building Engineering Innovation Award, demonstrating the perfect fusion of fire protection technology and architectural aesthetics.

Fire Rating Adaptation Strategies for Different Scenarios

For densely populated venues such as commercial complexes, Qinglong provides reinforced GRC curtain wall systems with fire resistance exceeding 2 hours, meeting the stringent requirements of Curtain Wall GB/T21086 through built-in fire-resistant rock wool core layers and thermal barrier design of metal connectors. In the field of cultural architecture, such as a provincial museum project, light-transmitting GRC combined with UHPC composite construction achieved a 3-hour fire resistance rating while presenting complex light and shadow artistic effects through parametric design. For overseas projects, Qinglong's GRC products have simultaneously passed ASTM E119 and BS 476 test standards, successfully addressing fire stability challenges in high temperature differential environments in an airport project in Saudi Arabia.

As a national "Specialized, Refined, Distinctive, and Innovative" enterprise and a GRC industry standard-setting organization, Qinglong has always regarded fire safety as the core direction of technological innovation. From material R&D to engineering implementation, it has established a full-process fire control system covering detailed design, manufacturing, and installation. Looking ahead, Qinglong will continue to explore composite fire protection technologies combining GRC with UHPC, GRG, and other materials, providing more innovative solutions for improving the safety performance of building curtain walls and fulfilling its corporate mission of "Creating Aesthetic Architecture."