What Is the Maximum Single-Panel Area of Large UHPC Imitation Stone Components? An Analysis of Dimensional Limits and Technical Safeguards

The maximum single-panel area of large UHPC stone-look panels is constrained by material properties, production processes, and installation conditions. Reasonably breaking through the size limit can improve construction efficiency, reduce joint seams, and enhance the overall integrity of the building's appearance. Clarifying the maximum single-panel area and technical safeguard measures is key to their application in large projects. Drawing on practical cases, Qinglong analyzes the size limits and the paths to achieving them.

I. Size Limits of Large UHPC Stone-Look Panels and Industry Status

Currently in the industry, the maximum single-panel area of large UHPC stone-look panels can reach 12 m², with conventional dimensions of 3m×4m and a weight of about 700kg. In the renovation project of Shanghai New World Century Plaza on Nanjing East Road, Qinglong successfully produced a single UHPC translucent stone-look panel measuring 3245mm×3530mm (about 12 m²), setting a new industry record for super-large dimensions. In small and medium-sized projects, the commonly used maximum single-panel area is 6-8 m² (3m×2.4m) with a weight of about 400kg, compatible with conventional lifting equipment and transport conditions; indoor decorative elements, constrained by transport and installation space, usually have a maximum single-panel area of no more than 5 m². The core factors limiting size breakthroughs include mold precision, component self-weight, lifting capacity, and transport stability, which must be addressed through systematic technical solutions.

II. Production Technical Safeguards for Super-Large UHPC Stone-Look Panels

The production stage must overcome three major technical challenges—molds, forming, and curing—to ensure the quality of super-large components. The molds use a composite structure of steel molds and GRP molds: steel molds ensure overall rigidity and prevent deformation, while GRP molds improve surface texture replication accuracy. Qinglong's super-large molds are CNC-machined, with dimensional error controlled within ±2mm. The forming process uses automated spray forming to ensure uniform distribution of the UHPC slurry and even fiber dispersion, avoiding localized weak spots, while an embedded steel mesh reinforces structural stability. Curing adopts staged steam curing with precise temperature and humidity control to reduce shrinkage stress and prevent cracking of super-large components. Through a customized curing curve, Qinglong ensures that 12 m² components show no obvious cracks after curing.

III. Transport and Installation Technical Support for Super-Large Components

Transport and installation are key to the application of super-large UHPC stone-look panels and require specialized equipment and plans. Transport uses custom flatbed trailers, with components placed vertically, buffer pads at the bottom, and dedicated clamps fixing the sides to avoid shaking and collision during transport. Qinglong's super-large component transport is equipped with full-journey GPS monitoring and dedicated escort personnel to ensure transport safety. Lifting uses large truck cranes (lifting capacity ≥10 tons) fitted with dedicated lifting devices and multi-point balanced hoisting to prevent damage from uneven stress on components during lifting. In the Shanghai Century Plaza project, Qinglong used a 16-ton truck crane with custom lifting devices to precisely hoist 12 m² components. Installation adopts a modular dry-hanging system with installation nodes preset in advance, reducing on-site adjustments and improving installation efficiency.

IV. Qinglong's Practice and Optimization of Super-Large UHPC Stone-Look Panels

Through technological innovation, Qinglong has achieved stable production and application of super-large UHPC stone-look panels. It developed a high-strength, lightweight formula that reduces component density while ensuring strength, keeping the weight of a 12 m² panel within 700kg to suit conventional lifting equipment. It optimized mold design by using detachable steel molds, improving mold turnover efficiency and reducing production costs. A full-process quality control system was established—from raw material inspection and production process monitoring to finished product inspection—to ensure that super-large components meet strength and dimensional precision standards. In projects such as the Yangshengtang Pharmaceutical Hangzhou Industrial Park, Qinglong used 6-8 m² UHPC stone-look panels, reducing joint seams by 80% and improving construction efficiency by 30%, fully demonstrating the application value of super-large components and providing efficient solutions for large projects.