Key Production Process Points and Quality Control Strategies for High-Strength GRC Panels

In the field of architectural decoration materials, high-strength GRC panels are widely used in high-end buildings such as grand theaters and commercial complexes, thanks to their advantages of light weight, high strength, and rich modeling possibilities. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group deeply understands the importance of production processes and quality control for high-strength GRC panel applications. This article analyzes the core production essentials of high-strength GRC panels, from material mix ratios and forming processes to curing management, providing a professional reference for designers and owners.

The primary step in producing high-strength GRC panels is the scientific proportioning of the material system. As the reinforcing skeleton, the dosage, length, and dispersion of glass fibers directly affect panel strength. Qinglong achieves uniform distribution of glass fibers through patented technology, ensuring flexural strength above 20MPa. Cement-based materials require selected high-grade Portland cement and quartz sand, combined with specially formulated additives to optimize workability and durability, safeguarding the physical performance of GRC panels at the source. For more industry information: +WeChat qlfsbl123

The forming process is key to determining the quality of high-strength GRC panels. A process combining spray-up forming with premix casting enables precise control of panel thickness and fiber orientation, and is particularly suitable for complex curved components. Qinglong has introduced automated production lines, using 3D scanning and parametric design to turn design challenges such as double-curved surfaces and hollow-out patterns into standardized production, achieving precision manufacturing with tolerances ≤2mm and meeting the exacting detail requirements of landmark buildings.

Curing is critical to the strength development and stability of high-strength GRC panels. Qinglong has established an intelligent temperature and humidity control system, strictly following the “heating–constant temperature–cooling” curve during the steam curing stage to prevent micro-cracks caused by temperature differences between the interior and exterior. The natural curing period is no less than 28 days, during which moisture content and strength indicators are regularly tested to ensure products meet performance standards upon delivery. The application of a full-process quality traceability system (such as RFID chip technology) makes every GRC panel traceable, providing reliable assurance for project quality.

Quality control must run through the entire production chain. From incoming inspection of raw materials (such as alkali-resistance testing of glass fibers), to random sampling for flexural and compressive strength during production, to testing of surface flatness and anchoring systems before shipment, Qinglong enforces corporate standards that exceed industry norms. For different application scenarios—for example, exterior wall cladding panels undergo additional freeze-thaw and weather-resistance testing—to ensure the long-term stability of GRC panels in extreme environments. This is also Qinglong's commitment to product quality as a National High-Tech Enterprise.

With the diversified development of architectural design, process innovation for high-strength GRC panels never ends. Leveraging the technical strength of its provincial-level R&D center, Qinglong continuously optimizes production processes, such as combining UHPC with GRC to form high-performance panels and expand application boundaries. As a participant in drafting the “Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC)”, Qinglong is committed to a “meticulous and excellence-pursuing” attitude, providing the industry with GRC solutions that combine aesthetic value and engineering reliability, and contributing to the creation of beautiful architecture. For more industry information: +WeChat qlfsbl123