Exploration and Analysis: How Large Can the Maximum Single Panel Area of UHPC Stone-Look Large Panels Be

In the field of contemporary architectural decoration, UHPC stone-imitation large-format panels have become the ideal choice for numerous high-end building projects thanks to their outstanding performance and beautiful decorative effects. As an industry leader with 28 years of experience in detailed design, manufacturing, construction and installation, and after-sales maintenance of UHPC/GRC/GRG/GRP materials, Qinglong Group (hereinafter referred to as Qinglong) will explore in depth the maximum single-panel area of UHPC stone-imitation large panels from the perspectives of technological breakthroughs, engineering practice, and industry trends, providing professional reference for designers and owners.

**I. Technological Breakthroughs: The Core Support for Expanding the Area of UHPC Stone-Imitation Large Panels**

As a new type of architectural decoration material, UHPC (Ultra-High Performance Concrete) has inherent material properties that lay the foundation for breakthroughs in large-panel area. Relying on its provincial R&D center and engineering technology center, and through optimized mix design and fiber reinforcement technology, Qinglong has raised the flexural strength of UHPC material to over 20 MPa and achieved compressive strength exceeding 150 MPa, while ensuring excellent toughness and durability. These "lightweight yet high-strength" properties allow UHPC stone-imitation components to achieve large dimensions while effectively reducing load requirements on the main building structure. Taking the industry standard "General Technical Conditions for Non-Load-Bearing Ultra-High Performance Concrete (UHPC) Components" (Plan No. 2024 - 0232T - JC), which Qinglong participated in formulating, as an example, its strict specifications on dimensional tolerances, mechanical properties, and other indicators provide a technical basis for large-panel production.

**II. Engineering Practice: Application Cases and Area Exploration of Qinglong UHPC Stone-Imitation Large Panels**

In actual projects, the maximum area of UHPC stone-imitation large panels must comprehensively consider factors such as transportation, installation, and design complexity. In the light-transmitting concrete project of the Century Plaza renovation on Nanjing East Road, Qinglong successfully applied UHPC stone-imitation large panels with a single-panel area of up to 12 ㎡ through BIM technology and modular installation techniques, and the project won the Silver Award of the "AALBORG WHITE Cup" First UHPC Construction Engineering Innovation Award. In addition, in an exterior wall project of a commercial complex, to meet curved-surface design requirements, Qinglong adopted parametric design and 3D scanning technology to control the area of individual UHPC stone-imitation components within 8 - 10 ㎡, satisfying design aesthetics while ensuring construction efficiency. It is worth noting that different application scenarios have significantly different requirements for large-panel areas: exterior wall cladding panels need to balance wind load resistance with installation convenience, while interior decorative components can have appropriately larger areas depending on design requirements.

**III. Industry Trends: Development Directions and Challenges of Large-Size UHPC Stone-Imitation Components**

As architectural design increasingly pursues "integration" and "individualization", large-size UHPC stone-imitation panels are becoming a trend. As a vice-chairman unit of the China GRC Association and a member of the International GRC Association, Qinglong believes that future breakthroughs in large-panel area will focus on three aspects: first, continuous optimization of material properties, further improving the crack resistance and durability of UHPC through nanotechnology and fiber modification; second, intelligent upgrading of production processes, introducing automated production lines and robotic laying technology to improve the forming precision of large panels; third, innovation in installation techniques, such as vacuum suction cup lifting and 3D laser positioning, to ensure the safe installation of large-size components. At the same time, the industry also faces challenges in standard unification and cost control, requiring enterprises and associations to jointly promote technological innovation and standard development.

As a national high-tech enterprise and a "specialized, refined, distinctive, and innovative" enterprise, Qinglong has always upheld the mission of "creating aesthetically beautiful buildings". With an annual production capacity of 600,000 square meters and full-chain service advantages, Qinglong provides customers with one-stop solutions from detailed design to after-sales maintenance. Looking ahead, Qinglong will continue to focus on the innovative development of UHPC/GRC/GRG/GRP materials, helping more landmark buildings achieve a perfect fusion of aesthetics and technology.