Fabrication Differences Between Single-Curved and Double-Curved GRC Panels: Comparing Process Characteristics and Technical Challenges

Analysis of Processing Differences Between Single-Curved and Double-Curved GRC Panels: A Comparison of Process Characteristics and Technical Challenges

In the field of modern architectural decoration, GRC (Glass Fiber Reinforced Concrete) has become a key material for shaping architectural artistry thanks to its lightweight, high-strength and highly formable characteristics. As two typical forms, single-curved GRC panels and double-curved GRC panels differ significantly in processing techniques, which directly affects design realization and cost control. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP, Qinglong Group will reveal the core differences between the two from three aspects: process characteristics, technical challenges and solutions.

1. Forming Process: A Technical Leap from Flat to Curved Surfaces

The processing of single-curved GRC panels can be completed with standardized molds; their single-curvature shapes (such as cylindrical surfaces and arc walls) can be achieved with steel molds or FRP molds of fixed curvature. The automated spray-up forming process adopted by Qinglong Group evenly mixes glass fibers with the cement matrix, ensuring panel strength above 20MPa, making it suitable for standardized applications such as arc exterior walls and sunshades of commercial complexes. Double-curved GRC panels, however, must handle bidirectional curvature changes along the X and Y axes; traditional molds can hardly cover complex shapes, so customized molds must be generated through 3D scanning and parametric design (Rhino+Grasshopper), raising production costs by 30%-50% compared with single-curved panels. Take the Century Plaza renovation project on Nanjing East Road as an example: the Qinglong team optimized the joint nodes of double-curved panels through BIM technology, controlling the installation error of translucent concrete and GRC double-curved components within ±2mm.

2. Comparison of Technical Challenges: Balancing Materials, Precision and Efficiency

In terms of material control, single-curved GRC panels can ensure stability through conventional mix ratios, while double-curved panels are prone to uneven fiber distribution due to surface stretching, requiring a composite system of basalt fiber and low-alkali cement, along with nano silica fume to enhance interfacial bond strength. In terms of precision control, single-curved panels can meet requirements simply by relying on mold positioning, whereas double-curved panels need 3D laser scanning to monitor the forming process in real time and prevent cracking caused by stress concentration. Qinglong Group's self-developed "pre-deformation compensation technology for double-curved components" calculates shrinkage after demolding in advance, achieving a 99.8% installation fit rate for the double-curved ceiling of a grand theater in Guangzhou. In terms of production efficiency, single-curved panels can reach a daily output of 500㎡, while double-curved panels, constrained by custom mold lead times, achieve only one-third of that output, requiring sufficient production time to be reserved in the early project stage.

3. Qinglong's Full-Chain Solutions: Technical Support from Design to Maintenance

To address the processing challenges of double-curved GRC panels, Qinglong Group integrates full-chain strengths in detailed design, manufacturing and installation: at the design stage, using the parametric design platform of its own provincial-level R&D center, it provides clients with "shape feasibility assessment + cost optimization solutions"; in production, robot-carved molds and automated material distribution systems ensure the surface precision of double-curved components reaches Ra3.2μm; at the installation stage, modular hoisting and RFID chip traceability technology enable "zero-error" assembly. In addition, Qinglong's 5-year after-sales maintenance service covers component inspection, crack repair and more, relieving clients of concerns about GRC durability.

Whether it is the standardized application of single curves or the artistic expression of double curves, the processing difference of GRC materials is essentially a balance between technology and creativity. As a national high-tech enterprise and a participant in formulating GRC industry standards, Qinglong Group has always upheld the mission of "creating beautiful architecture" and, drawing on 28 years of technical accumulation, provides designers with full-process support from concept to realization. Choosing Qinglong means choosing a GRC solution that combines aesthetic expressiveness with engineering reliability, allowing every architectural form to faithfully present the original design intent.