Analysis of Processing Differences Between Single-Curve and Double-Curve GRC Panels: Comparison of Process Characteristics and Application Scenarios

In the field of modern architectural decoration, GRC (Glass Fiber Reinforced Concrete) materials, with their lightweight, high-strength and flexible forming characteristics, have become an important vehicle for shaping architectural aesthetics. Among them, single-curved GRC panels and double-curved GRC panels, as two typical forms, show significant differences in processing technology and application scenarios. Qinglong Group, with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, will analyze the core differences between the two from a professional perspective, providing designers and owners with an in-depth reference for material selection.

I. Single-Curved GRC Panels: An Efficient Solution Through Standardized Production

The processing of single-curved GRC panels is characterized by “regular curved surfaces”, with process features reflected in the high standardization of mold development and production workflows. In the mold-making stage, single-curved molds made of fiberglass (FRP) or ABS are typically used, which can be mass-replicated through mechanical pressing, offering relatively low mold costs and high turnover efficiency. During production, Qinglong Group adopts an automated spray-up molding process, mixing glass fibers and cement-based materials in precise proportions, and through vacuum degassing, steam curing and other steps, ensures that the panels meet a flexural strength standard of over 20MPa. This standardized production model reduces the unit production cost of single-curved GRC panels by 30%-40% compared with double-curved components, making them especially suitable for batch supply in large-scale projects.

In terms of application scenarios, single-curved GRC panels are widely used in curved exterior walls of commercial complexes, sunshade canopies of subway stations, and dome decorative lines of European-style buildings. For example, in a landmark commercial center project, Qinglong Group achieved a continuous 600-meter curved curtain wall using single-curved GRC panels, which not only met the smooth curve requirements of the building facade but also controlled project costs through large-scale production, demonstrating the advantages of GRC materials in balancing standardization and aesthetics.

II. Double-Curved GRC Panels: Artistic Form Breakthroughs Through Customized Craftsmanship

The processing of double-curved GRC panels is an ultimate test of material plasticity and technical capability. The core difficulties lie in the three-dimensional coordinate control of double-curved surfaces and mold precision. Qinglong Group uses parametric design software (Rhino+Grasshopper) in conjunction with BIM technology to transform designers' creative concepts into precise digital models, then produces high-density foam master molds through CNC engraving technology, and finally replicates fiberglass molds with a surface error of ≤3mm. In the production stage, experienced craftsmen hand-lay glass fiber cloth, combined with vacuum infusion technology to ensure uniform material distribution, while 3D scanning is used to monitor the forming quality of components in real time. This customized production model extends the production cycle of double-curved GRC panels by more than 50% compared with single-curved panels, but enables complex shapes with a minimum radius of curvature of 300mm.

In terms of applications, double-curved GRC panels are a “form-shaping weapon” for cultural landmark buildings such as grand theaters and art museums. For example, in the double-curved curtain wall of a provincial museum project, Qinglong Group assembled 126 irregular double-curved GRC panels to create an abstract “water erosion” texture. The panel surfaces were treated with a special release agent to form a fine sandstone-like texture, which not only satisfied the architect's pursuit of artistic expression but also ensured structural safety through built-in steel reinforcement skeletons and stainless steel fixing systems. Such projects fully demonstrate the irreplaceability of GRC materials in high-end architectural decoration.

III. Selection Decision: From Project Requirements to Full-Chain Service Matching

Choosing between single-curved and double-curved GRC panels requires comprehensive consideration of the project's aesthetic positioning, cost budget and construction schedule. For commercial buildings pursuing economy and efficiency, the standardization advantages of single-curved GRC panels are more prominent; for cultural landmarks emphasizing uniqueness, the customization capabilities of double-curved GRC panels are needed to bring designs to fruition. As a leading GRC manufacturer in China, Qinglong Group provides full-chain services from detailed design and mold development to construction and installation. Its Guangxi production base, with an annual capacity of 600,000 square meters and 28 years of project experience, can meet both standardized and customized needs. Whether it is batch supply of single-curved components or technical breakthroughs for double-curved shapes, Qinglong always upholds the mission of “Creating Beautiful Architecture”, promoting the diversified application of GRC materials in architectural decoration through technological innovation and process optimization.