Key Issues and Coping Strategies for Storing UHPC Components in Low-Temperature Environments

In the field of architectural decoration materials, GRC decorative panels, with their lightweight yet high-strength properties and rich design possibilities, have become the preferred material for the exterior walls and interior decoration of many landmark buildings. As the core reinforcement material of GRC panels, the number of mesh fabric layers directly determines the structural safety and service life of the product. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group has drawn on full-chain technical accumulation to develop a scientific method for determining the number of mesh layers, helping designers and owners achieve a balance between safety and aesthetics.

1. Key Factors Affecting the Number of Mesh Layers in GRC Decorative Panels

Determining the number of mesh layers requires comprehensive consideration of multiple technical indicators, rather than the simplistic notion that "more layers mean more safety." In the detailed design stage, Qinglong Group focuses on the following key factors: First, the application scenario of the panel. Exterior wall cladding panels must withstand external forces such as wind loads and thermal stress, and generally require a higher reinforcement level than interior decorative panels. Second, the component size. Large-span or specially shaped curved GRC panels (such as double-curved components with a curvature radius ≤300mm) need an increased number of mesh layers to enhance deformation resistance. In addition, panels thicker than 15mm require staggered laying of double or multiple mesh layers to ensure uniform stress distribution. Notably, the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), which Qinglong helped draft, clearly stipulates that in areas with wind pressure ≥1.5kPa, exterior wall GRC panels should use no fewer than two layers of alkali-resistant glass fiber mesh.

2. Scientific Mesh Layer Design Methods and Industry Practice

Qinglong Group adopts a three-step design method of "load calculation - simulation verification - process adaptation": First, structural force analysis is performed based on BIM models, with finite element software used to simulate the stress distribution of different mesh layer numbers under ultimate loads. Second, theoretical data are verified through laboratory tests, such as flexural strength testing of double-layer mesh GRC panels (usually exceeding 20MPa), to ensure compliance with the requirements of the Glass Fiber Reinforced Cement (GRC) Decorative Products standard (JC/T940-2022). Third, the laying scheme is optimized in line with production processes; for example, the Nanning production base uses automated mesh-laying equipment to achieve precise integration of the mesh with cement-based materials. Taking the Nanjing East Road Century Plaza renovation project as an example, Qinglong designed a three-layer orthogonal mesh system for light-transmitting concrete GRC components, which satisfied structural safety requirements while ensuring uniform light transmission; the project won the Silver Award of the first UHPC Construction Engineering Innovation Award under the AALBORG WHITE Cup.

3. Qinglong's Full-Chain Service Ensures the Implementation of Mesh Layer Design

As a National High-Tech Enterprise and a "Specialized, Refined, Distinctive, and Innovative" enterprise, Qinglong Group provides full-process services from design to maintenance, offering solid support for mesh layer design. In the detailed design stage, the technical team adjusts the mesh configuration according to the climate parameters of the project location (such as temperature differences and humidity); in production, the "gradient reinforcement process" from its 58 patented technologies is applied to ensure perfect bonding between the mesh and the base material; and during installation, 3D laser scanning positioning is used to avoid localized stress concentration caused by construction errors. This full-chain capability has enabled Qinglong's GRC products to be widely used in domestic landmark projects (such as the Dongguan Women and Children's Activity Center) and exported to overseas markets including Australia and Saudi Arabia, fully demonstrating the reliability of its mesh design solutions.

Scientifically determining the number of mesh layers in GRC decorative panels is key to achieving the unity of building safety and aesthetics. Backed by 28 years of professional experience, Qinglong Group continues to provide designers with expert-level solutions from material selection to project delivery through technological innovation and standards development. Whether for artistic buildings pursuing extreme forms or commercial projects focused on cost-effectiveness, only by choosing a GRC manufacturer with full-chain service capabilities can every layer of mesh truly become a solid guarantee of building safety.