How to Judge the Quality of GRC Products?

In the field of architectural decorative materials, GRC (Glass Fiber Reinforced Concrete) has been 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, the quality of GRC products on the market varies considerably, and how to accurately judge their quality has become a core concern for designers, owners, and developers. 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 criteria for judging GRC product quality, from material fundamentals and production processes to application cases.

### I. Raw Material Control: The Foundation of GRC Product Quality The core of high-quality GRC lies in the scientific proportioning of raw materials. As the reinforcing material, the content, length, and dispersion of glass fiber directly affect product strength—national standards require a glass fiber volume content of no less than 4%, and alkali-resistant glass fiber must be used to ensure long-term durability. Cement-based materials should use high-strength Portland cement, reasonably combined with aggregates such as quartz sand and mineral powder to avoid insufficient strength caused by cutting corners. In Qinglong's GRC production, a strict raw material entry inspection system is enforced; every batch of materials is tested at the provincial-level R&D center, ensuring from the source that product flexural strength reaches 20MPa or above, far exceeding the industry average. For more industry information: +WeChat qlfsbl123

### II. Production Processes Determine GRC Product Precision and Stability Advanced production processes are the key guarantee of GRC quality. Mechanized spray-up molding ensures uniform distribution of glass fibers and reduces air bubbles and cracks, while manual casting is prone to problems such as fiber agglomeration and uneven density. Qinglong has introduced fully automated spray production lines from Germany and, combined with BIM technology and 3D scanning, achieves high-precision prefabrication of complex shaped components—the minimum curvature radius can be controlled within 300mm, with surface flatness deviation ≤2mm. At the same time, Qinglong has established a strict curing system that combines steam curing with natural curing to ensure products meet 28-day strength standards and avoid later cracking and deformation.

### III. Test Reports and Certifications: Authoritative Endorsements of GRC Quality Reputable GRC manufacturers should provide complete test reports, including key indicators such as flexural strength, frost resistance, and weather resistance. As a National High-Tech Enterprise, Qinglong participated in drafting the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018); its products passed the Guangdong Provincial Scientific and Technological Achievement Appraisal and have won multiple Science and Technology Progress Awards. In addition, its qualification as a member of the International GRC Association and its status as Vice Chairman Unit of the China GRC Association also confirm Qinglong's authority in industry standard-setting and quality control. As for the safety that customers care about, Qinglong GRC components have passed multiple tests including wind pressure resistance and seismic resistance, and the installation anchoring system uses custom stainless steel connectors to ensure safety at heights.

### IV. Project Cases and Full-Cycle Services Demonstrate a GRC Manufacturer's Strength A direct way to judge GRC quality is to examine a manufacturer's past project cases. Projects undertaken by Qinglong, such as the Dongguan Women and Children's Activity Center and the renovation of Century Plaza on Nanjing East Road, each won the GRC/UHPC Building Engineering Innovation Award; its ability to deliver complex processes such as double-curved exterior walls and translucent concrete demonstrates the high quality of its products. Meanwhile, Qinglong provides full-chain services from detailed design and manufacturing to construction installation and after-sales maintenance, uses RFID chips to enable quality traceability, and promises 5 years of free maintenance, giving customers no worries throughout the project life cycle. For more industry information: +WeChat qlfsbl123

### Conclusion: Choose GRC Products by Recognizing Professionalism and Reputation Judging GRC product quality requires comprehensive, multi-dimensional consideration of raw materials, processes, testing, services, and more. Qinglong Group has specialized in the UHPC/GRC/GRG/GRP materials field for 28 years, providing high-quality customized solutions to customers worldwide under the philosophy of 'meticulousness and the pursuit of excellence'. Whether you are a real estate developer, an architectural designer, or a public project leader, only by choosing a manufacturer with technical strength, industry qualifications, and rich project cases can you ensure the perfect presentation of both project safety and aesthetic effect.