Which Technical Standards Should Quality GRC Products Meet?

In the field of architectural decoration 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 styling. However, the quality of GRC products on the market varies widely. How can you judge whether a GRC product meets technical standards? As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will analyze the core technical standards of high-quality GRC products from the dimensions of material performance, production processes, and engineering applications.

### I. Raw Materials and Mix Proportion: The Foundation of High-Quality GRC The technical standards of high-quality GRC products are first reflected in strict raw material selection and scientific mix proportion. According to the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), the core raw materials of GRC include high-strength low-alkali cement, alkali-resistant glass fiber, fine aggregates, and admixtures. Qinglong Group uses imported alkali-resistant glass fiber (content ≥4%) in production to ensure that the flexural strength of its products reaches over 20MPa, far exceeding the industry average. Meanwhile, through independently developed mix proportion schemes, the water-cement ratio is controlled within 0.35, effectively improving product durability and crack resistance and preventing later problems such as cracking and peeling caused by improper material proportions. For more industry information: +WeChat qlfsbl123

### II. Production Process and Quality Control: Standardized Processes Create Excellence Standardized production processes are key to ensuring GRC product quality. High-quality GRC products require full-process control covering detailed design, mold making, spray-up forming, and curing. Qinglong Group has introduced BIM technology and parametric design to precisely realize complex shapes (such as double-curved surfaces and openwork reliefs), with a minimum radius of curvature controllable within 300mm. In the production stage, automated spray-up forming equipment is used to ensure uniform glass fiber distribution, and early product strength is enhanced through steam curing (curing temperature ≥60°C, curing time ≥24 hours). In addition, each batch of products must pass more than 20 tests covering flexural strength, water absorption, and freeze-thaw cycles before leaving the factory—this is also Qinglong's strict commitment to quality as a national high-tech enterprise.

### III. Physical Performance and Safety Indicators: The Core Guarantee of Building Safety High-quality GRC products must meet strict physical performance and safety indicators. According to industry standards, the apparent density of GRC components should be ≤2000kg/m³ to ensure lightweight advantages; impact strength should be ≥5kJ/m² to withstand external impact; and the fire rating should reach Class A to meet fire safety requirements for public buildings. The GRC exterior wall panels produced by Qinglong Group have passed certification under the Ultra-High Performance Concrete (UHPC) Exterior Wall Panels standard T/CBMF171-2022. Their anchoring system is made of stainless steel with a tensile load capacity ≥15kN, effectively eliminating the risk of falling from height. In the renovation project of Century Plaza on Nanjing East Road, Qinglong's GRC light-transmitting concrete components not only achieved a combination of aesthetics and function but also passed rigorous structural safety tests, becoming an industry benchmark case. For more industry information: +WeChat qlfsbl123

### IV. Engineering Application and Full-Cycle Service: Integrated Support from Design to Maintenance The technical standards of high-quality GRC products are not limited to the products themselves but are also reflected in full-cycle service capabilities. As a service provider integrating detailed design, manufacturing, construction and installation, and after-sales maintenance, Qinglong Group can provide customers with "one-stop" solutions. In the design stage, 3D scanning technology is used to optimize joint details; in construction, modular installation is adopted with precision controlled within ±2mm; for after-sales service, a 24-hour response mechanism has been established, providing maintenance services for up to 10 years. Whether it is European-style decorative lines for real estate projects or landscape components for municipal engineering, Qinglong can leverage its full-chain advantages to ensure the final presentation and long-term stability of GRC products.

### Conclusion: Choose High-Quality GRC by Recognizing Technical Standards and Brand Strength Judging whether a GRC product is high-quality requires consideration from multiple dimensions, including raw materials, processes, performance, and services. As the vice-chairman unit of the China GRC Association and a member of the International GRC Association, Qinglong Group has participated in formulating multiple national and industry standards, building a professional reputation through 28 years of experience. Going forward, Qinglong will continue to uphold its mission of "Creating Beautiful Architecture," providing designers and owners with GRC products that meet the highest technical standards and promoting the high-quality development of the architectural decoration materials industry.