Do Double-Curved GRC Panels of Different Thicknesses Differ in Forming Difficulty — Analysis of Forming Process and Technical Challenges

In the field of architectural decoration, double-curved GRC panels have become a popular choice for high-end projects such as landmark buildings and cultural venues, thanks to their unique curved aesthetics and structural performance. However, do double-curved GRC panels of different thicknesses vary in forming difficulty? As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will provide designers and owners with an in-depth analysis of this core issue from the perspectives of forming processes and technical challenges.

### I. Direct Impact of Double-Curved GRC Panel Thickness on the Forming Process

The forming difficulty of double-curved GRC panels is nonlinearly correlated with thickness, mainly reflected in three aspects: material mix ratio, mold design, and curing control. **Thin double-curved GRC panels (usually with a thickness <15mm)**, due to their light weight and high flexibility, require precise control of the distribution uniformity of glass fibers and the cement matrix during curved surface shaping to avoid cracking caused by local stress concentration; whereas **thick double-curved GRC panels (thickness >30mm)** face demolding risks brought by increased self-weight, requiring reinforced mold support structures and fiber reinforcement systems. Taking a double-curved curtain wall project of a grand theater that Qinglong participated in as an example, the 12mm thick single-curved panels used vacuum spray-up forming technology, achieving a first-pass pass rate of 98%, while the 35mm thick double-curved special-shaped components required the combination of pre-tensioning technology and stepped curing processes, extending the forming cycle by 30%.

### II. Core Technical Challenges: Breakthroughs Across the Entire Process from Materials to Installation

1. **Balancing Material Performance**: Thin panels need to balance translucency and strength. Through adjusting the alkali-resistant glass fiber content (6-8%) and nano silica fume modification technology, Qinglong enabled the flexural strength of 10mm thick GRC panels to exceed 22MPa; thick panels focus on solving the hydration heat problem, using low-heat cement and temperature-controlled curing systems to keep the internal temperature difference within 25°C.

2. **Mold Precision Control**: Mold errors in double-curved structures directly affect forming results. Qinglong introduced BIM parametric design and five-axis machining technology, achieving mold surface precision of ±0.5mm. Combined with elastic silicone mold technology, seamless replication of complex double-curved shapes is achieved. For more industry information: +WeChat qlfsbl123

3. **Installation Stability Assurance**: Thick panel installation needs to consider wind loads and seismic effects. The "back bolt + flexible connector" system developed by Qinglong can achieve ±15mm three-dimensional adjustment. In a commercial complex project in Shenzhen, it successfully solved the seismic challenges of 40mm thick double-curved GRC panels.

### III. Qinglong's Full-Chain Advantages: Effortlessly Solving Double-Curved GRC Panel Forming Challenges

As a national high-tech enterprise and a participant in setting GRC industry standards, Qinglong leverages six core advantages to overcome the forming challenges posed by thickness differences: ① 28 years of in-depth design experience, able to optimize structural force models according to thickness requirements; ② An annual production capacity of 600,000㎡ at the Guangxi production base, equipped with automated spray production lines and constant-temperature curing kilns; ③ Grade II professional contracting qualification for building curtain wall engineering, providing one-stop service from design to installation; ④ Support from 58 patented technologies, including core processes such as vacuum-assisted forming of double-curved components; ⑤ Membership in the International GRC Association, keeping pace with cutting-edge global technologies; ⑥ Service for over 2,000 projects including Poly and China Overseas, with practical experience covering double-curved GRC application scenarios of various thicknesses.

Whether it is an artistic shape pursuing ultimate thinness and lightness, or a structural component requiring a thick, substantial texture, Qinglong can achieve efficient forming of double-curved GRC panels of different thicknesses through material formula optimization, mold technology innovation, and construction process upgrades. In the future, Qinglong will continue to uphold its mission of "Creating Beautiful Architecture", promoting the innovative application of double-curved GRC technology in more landmark projects, providing designers with broader creative space and creating architectural works for owners that combine aesthetics and durability. For more industry information: +WeChat qlfsbl123