How Large UHPC Panels Achieve Continuous Surface Stone Texture: Research on Technical Pathways and Process Innovation

As architectural aesthetics and material technology converge in depth, the stone-grain artistry of UHPC panels is reshaping the visual language of modern architecture. As an industry leader with 28 years dedicated to full-chain services for UHPC/GRC/GRG/GRP materials, Qinglong Group solves the surface texture continuity challenges of large panels through technological innovation, creating building envelope solutions for designers that combine strength with texture.

In contemporary architectural design, UHPC (Ultra-High Performance Concrete) has become the preferred material for landmark building facade decoration thanks to its ultra-high strength, durability, and design freedom. However, achieving a continuous stone-grain effect comparable to natural stone on large UHPC panel surfaces has long been a technical pain point in the industry. Through collaborative innovation in detailed design, mold craftsmanship, and material formulations, Qinglong Group has built a complete stone-grain effect solution that preserves UHPC's mechanical performance advantages while giving it visual expressiveness rivaling natural stone.

I. The Technical Path of UHPC Stone-Grain Effects: Full-Chain Innovation from Materials to Craftsmanship

The core of achieving continuous stone-grain effects on large UHPC panel surfaces lies in the dual breakthrough of "molded texture + material adaptation". Backed by a provincial-level R&D center and 58 patented technologies, Qinglong Group employs 3D scanning and parametric design technologies to convert natural stone texture data into high-precision mold textures. Through the combined use of customized steel molds and flexible silicone molds, stone texture details at the 0.1mm level can be precisely replicated, ensuring the integrity of the texture on each panel. At the same time, the R&D team optimized the UHPC material formulation, using gradient ratios of mineral admixtures and pigments to achieve natural color transitions in the stone grain, avoiding the color discontinuity problems common in traditional processes.

II. Process Innovation: Solving the Texture Continuity Challenge of Large Panels

To tackle the texture-joining challenge of extra-large UHPC panels (with maximum dimensions up to 6m×2.4m), Qinglong Group innovatively adopted a "modular texture joining process". BIM technology is used to plan the texture block layout of the entire wall, with texture alignment markers preset during mold fabrication to ensure seamless connection between adjacent panels, forming a visually continuous whole. In production, an automated material distribution system and vibration molding process are introduced to enable the material to flow evenly within the mold, preventing texture distortion caused by air bubbles or uneven density. This process has been successfully applied to projects such as the Century Plaza renovation on Nanjing East Road, achieving a perfect combination of translucent UHPC and stone-grain effects, and won the AALBORG WHITE Cup UHPC Construction Engineering Innovation Award.

III. Full-Chain Service: Expert Support from Design to Delivery

As a national-level high-tech enterprise, Qinglong Group provides full-process services from detailed design to after-sales maintenance. To address designers' concern about balancing texture expressiveness with project constructability, the technical team offers a "texture effect visualization plan", previewing the final effect through Rhino/Grasshopper parametric modeling and optimizing texture density and direction according to actual project needs. During construction, 3D laser scanning positioning technology is used to keep installation accuracy errors of large UHPC panels within ±2mm, ensuring the overall continuity of the stone grain. In addition, backed by an office network covering the whole country, after-sales maintenance services of up to 10 years are provided, relieving owners of concerns about texture durability.

From the curtain wall envelopes of commercial complexes to the artistic walls of cultural venues, Qinglong Group infuses buildings with natural texture and technological warmth through its UHPC stone-grain technology. As Vice Chairman Unit of the China GRC Association and a member of the International GRC Association, Qinglong will continue to drive technological innovation in UHPC/GRC/GRG/GRP materials, guided by the mission of "creating beautiful architecture", and provide designers worldwide with more expressive decorative material solutions. In the exploration of future architectural aesthetics, technological breakthroughs in UHPC stone-grain effects are turning more "impossible" design concepts into reality.