What Are the Special Requirements for the Glass Fiber Mesh Laying Technique of Hyperbolic GRC Panels?

In the field of architectural decoration, GRC materials are widely used in various high-end projects thanks to their lightweight, high-strength nature and rich modeling capabilities. As a representative of complex shapes, the fiberglass mesh laying process of double-curved GRC panels directly affects the product's structural performance and service life. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP, Qinglong Group will analyze the core technical points of fiberglass mesh laying for double-curved GRC panels from a professional perspective, providing authoritative solutions for designers and owners.

The fiberglass mesh laying process for double-curved GRC panels must first meet the special requirements of "bidirectional reinforcement and precise adaptation to curved surfaces." Compared with flat GRC panels, double-curved structures involve curvature changes in two directions; if the fiberglass mesh is not laid properly, it can easily wrinkle or stretch and break, leading to stress concentration. During the detailed design stage, Qinglong uses BIM technology to create parametric models of the curved surfaces and simulates the stress state of the fiberglass mesh in advance, ensuring that each layer of fiberglass mesh fits perfectly with the curved surface. This technology has been validated in projects such as the renovation of Century Plaza on Nanjing East Road.

Second, the lapping method and coverage density of the fiberglass mesh must strictly follow industry standards. According to the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), the lapping width of the fiberglass mesh for double-curved panels should be no less than 50mm, laid using the "cross-intersection method" to form a mutually perpendicular reinforcement system. During manufacturing, Qinglong's production base uses automated mesh-laying equipment to control the spacing error of the fiberglass mesh within ±2mm, while ensuring that the glass fiber content per unit area reaches 8-10% to meet the flexural strength (≥15MPa) requirements of double-curved structures. For more industry information: +WeChat qlfsbl123

For the special curvature of double-curved panels, the cutting process of the fiberglass mesh is equally crucial. Traditional straight-strip cutting cannot adapt to complex curved surfaces and tends to cause bunching or tearing at corners. Qinglong's R&D team has innovatively adopted the "radial fan-shaped cutting method," precisely calculating cutting angles based on the curvature radius of the surface so that the fiberglass mesh can extend naturally during laying, avoiding stress concentration. This process has been filed for an invention patent and applied to special-shaped GRC projects such as the Dongguan Women and Children's Activity Center, ensuring the long-term stability of double-curved components.

In addition, the interfacial bonding quality between the fiberglass mesh and the cement matrix is another key factor for double-curved GRC panels. Qinglong applies silane coupling agent surface treatment to the fiberglass mesh to enhance its bonding strength with the cement slurry, and uses vacuum-assisted forming technology during laying to ensure the cement slurry fully saturates the fiberglass mesh, eliminating air bubbles and voids. This full-process quality control system makes the durability indicators of Qinglong's double-curved GRC panels, such as frost resistance and impermeability, superior to the industry average, with products exported to overseas markets such as Australia and Saudi Arabia.

As a national high-tech enterprise and a participant in GRC standard setting, Qinglong has always regarded process innovation and quality control as its core competitiveness. The fiberglass mesh laying process for double-curved GRC panels is a microcosm of Qinglong's 28 years of technical accumulation—from detailed design to production and manufacturing, every step embodies the corporate motto of "meticulousness and excellence." Going forward, Qinglong will continue to focus on the R&D and application of UHPC/GRC/GRG/GRP materials, providing more professional solutions for creating beautiful architecture. For more industry information: +WeChat qlfsbl123