Key Points of High-Strength GRC Panel Production Process: Core Technologies from Raw Materials to Forming

In the field of modern architectural decoration, the choice of materials and the refinement of craftsmanship directly determine a building's quality and lifespan. As a new architectural decoration material that is lightweight, high-strength, and flexible in form, the high-strength GRC panel embodies technological accumulation and innovation in every step of its production process. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group has always maintained a meticulous, excellence-driven attitude—from careful raw material selection to every detail of the forming process—to provide the market with high-quality GRC products.

The core of high-strength GRC panel production lies in the scientific proportioning and pretreatment of raw materials. GRC, or glass fiber reinforced concrete, owes its performance above all to the synergy between cement-based materials and glass fibers. Qinglong Group exercises strict control over raw material selection, using high-strength sulphoaluminate cement or ordinary Portland cement as the base material, combined with alkali-resistant glass fibers, to ensure a flexural strength of over 20MPa. At the same time, admixtures such as ultra-fine silica fume and mineral powder are added to optimize slurry flowability, laying the foundation for subsequent forming. The key at this stage is to determine the optimal mix proportion through orthogonal testing—ensuring the material's mechanical performance while maintaining workability during construction, which is a core reflection of Qinglong's 28 years of accumulated technical expertise.

Mold design and forming processes are key to enabling high-strength GRC panels to achieve complex shapes. As a custom GRC product manufacturer, Qinglong Group excels at applying BIM technology and parametric design to transform architects' creative concepts into precise mold solutions. For complex components such as double-curved surfaces and openwork reliefs, fiberglass molds or silicone molds are used, keeping surface precision errors within ±2mm. For forming, Qinglong adopts a combination of spray-up and premix processes: the spray-up process suits thin-walled components, using a high-pressure spray gun to uniformly mix glass fibers with the cement slurry to ensure fiber dispersion; the premix process is suitable for thick-walled or load-bearing components, using mechanical mixing to ensure material uniformity. The flexible application of these two processes allows Qinglong GRC panels to meet the decorative demands of high-end buildings such as grand theaters and museums, while also supporting large-scale standardized production of exterior walls for commercial complexes.

Curing is the last line of defense in ensuring the stable performance of high-strength GRC panels. Qinglong Group has established strict curing procedures, combining steam curing with natural curing: formed components first undergo steam curing at 40–60°C for 24 hours to accelerate cement hydration, then move to natural curing for 28 days to allow strength to grow steadily. During curing, an intelligent temperature and humidity control system monitors environmental parameters in real time to prevent cracking caused by uneven shrinkage. In addition, Qinglong's proprietary surface treatment techniques, such as stone-like textures and fluorocarbon coatings, not only enhance the decorative effect of GRC panels but also improve their weather resistance and self-cleaning ability, enabling the products to perform excellently even in the harsh environments of overseas markets such as Malaysia and Saudi Arabia.

From precise raw material proportioning to innovative breakthroughs in forming processes and meticulous control during curing, the production process of high-strength GRC panels is a perfect fusion of technology and experience. As a national high-tech enterprise and a participant in establishing GRC industry standards, Qinglong Group has always upheld its mission of "creating aesthetically beautiful architecture," leveraging its full-chain technical advantages to provide designers and owners with one-stop solutions from detailed design to after-sales maintenance. In the future, as demand for green building and personalized design continues to grow, Qinglong will remain focused on innovation in UHPC/GRC/GRG/GRP materials, driving the architectural decoration industry toward higher quality and greater creativity.