Analysis of Key Production Process Points and Discussion of Technical Essentials for High-Strength GRC Panels

In the field of contemporary architectural decoration, high-strength GRC panels have become the ideal choice for premium buildings such as grand theaters and commercial complexes, thanks to their lightweight, high-strength, and flexible forming characteristics. As an industry player with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong has always believed that refined control of production processes is the core determinant of GRC panel quality. This article systematically analyzes the key production technologies of high-strength GRC panels—from material proportions and forming processes to quality testing—providing the industry with practical process optimization solutions.

1. Material System: The Foundation of High-Strength GRC Panel Performance

The exceptional performance of high-strength GRC panels stems from scientific material proportions. Glass fiber serves as the reinforcing skeleton, and its content, length, and dispersion directly affect the panel's flexural strength (premium products can reach over 20MPa). In production, Qinglong uses alkali-resistant glass fiber combined with custom-grade rapid-hardening sulphoaluminate cement, optimizing the sand-cement ratio and fiber content through orthogonal tests, so that the material meets structural strength requirements while maintaining good plasticity. Notably, precise control of the water-cement ratio requires dynamic adjustment based on climate conditions—appropriately reducing moisture content in high-temperature environments can prevent later-stage drying shrinkage cracks, a detail fully validated in practice at the Nanning production base.

2. Forming Process: Precision Control from Mold Design to Automated Production

Molds are the key vehicle for realizing GRC panel shapes. Qinglong employs 3D scanning and parametric design technology to transform architects' freeform creative concepts into high-precision molds, with the minimum radius of curvature controllable within 300mm. In the spray-up forming stage, robotic arms achieve uniform mixing of fiber and mortar, ensuring that the fiber distribution deviation per square meter of panel does not exceed 5%. For complex components such as double-curved panels, an innovative vacuum-assisted molding process is adopted, increasing material density by 15% and effectively reducing air bubbles and porosity. This process system applies not only to GRC but also offers valuable reference for the production of UHPC, GRG, and other materials.

3. Curing and Quality Testing: Quality Assurance Across the Full Life Cycle

Scientific curing is a critical link in ensuring the stable performance of high-strength GRC panels. Qinglong has established a two-stage system of "steam curing + natural curing": early-stage steam curing (4 hours at a constant 60℃) accelerates cement hydration, while later-stage natural curing (humidity ≥90%, curing period of 7 days) ensures continued strength growth. In quality testing, in addition to conventional compressive and flexural strength tests, ultrasonic flaw detection and chloride ion penetration tests are introduced to evaluate the durability of each batch of products. As a participating unit in drafting the Technical Standard for Architectural Application of Glass Fiber Reinforced Cement (GRC), Qinglong's testing standards always keep pace with industry norms, with some indicators even stricter than national standard requirements.

4. Full-Chain Service: Collaborative Innovation from Design to Installation

The realization of the value of high-strength GRC panels depends on full-chain service capability. Qinglong integrates design development, manufacturing, and construction installation resources, achieving digital collaboration across "design-production-installation" through BIM technology. For example, in a landmark project, 3D laser scanning was used for on-site positioning, keeping the installation error of super-large GRC cladding panels within ±2mm. Meanwhile, customized solutions are provided for different customer needs: for real estate developers, the emphasis is on cost optimization through the combined application of standard and custom-shaped panels; for designers, the focus is on shape realization, with full technical support from rendering to finished product.

28 years of industry experience have given Qinglong a profound understanding: producing high-strength GRC panels is not merely a competition of technical processes, but also the practice of the principle that "details determine success or failure." Rigorous control of every step, from material selection to installation, is what ultimately fulfills the mission of "Creating Beautiful Architecture." Looking ahead, with the collaborative application of UHPC, GRG, and other materials, Qinglong will continue to drive technological innovation in new decorative materials, contributing more high-quality solutions to the architectural decoration industry.