How Large UHPC Panels Achieve Continuous Stone Veining Surface Effects: Process Principles and Technical Innovation Research

Replicating natural textures with technology, endowing buildings with warmth through craftsmanship — the breakthrough and innovation of UHPC stone-grain surface technology

In contemporary architectural design, the aesthetic expression and performance breakthrough of materials have always been core propositions of industry exploration. As a new building material combining ultra-high strength with design freedom, UHPC (Ultra-High Performance Concrete) is gradually replacing traditional stone as the preferred material for premium building envelopes. However, how to achieve continuous stone-grain effects on UHPC panel surfaces comparable to natural stone has long been a technical challenge plaguing the industry. Qinglong Group, with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, has successfully resolved this pain point through process principle innovation and technology integration, opening up entirely new possibilities for building envelope design.

1. Technical Bottlenecks and Industry Needs for UHPC Stone-Grain Effects

Natural stone has long dominated the premium architectural decoration market with its unique texture, yet problems such as its heavy weight, susceptibility to weathering, and scarce resources have become increasingly prominent. While UHPC has become an ideal alternative material thanks to its high compressive strength, strong durability, and excellent plasticity, it falls short in surface texture expressiveness: traditional mold processes struggle to achieve large-area continuous stone grain, manual imitation engraving is inefficient and inconsistent, and digital printing technology faces limitations of insufficient adhesion and weak weather resistance. For landmark buildings, commercial complexes, and cultural venues pursuing "natural texture + industrial precision," this contradiction is particularly acute.

2. Process Principle Innovation: A Technical Path from "Replication" to "Regeneration"

Qinglong Group has achieved a breakthrough in continuous stone grain on UHPC surfaces through three major technical innovations: First, using 3D scanning and parametric design technology, it carried out 1:1 digital capture of natural stone textures and built a database containing over 2,000 texture samples, ensuring the natural randomness and artistic expressiveness of the stone grain; Second, it developed specialized flexible mold materials combined with vacuum casting technology, enabling UHPC slurry to precisely replicate the fine textures of the mold surface during solidification, achieving 0.1mm-level texture precision; Finally, it innovated a surface crystallization treatment process that, through nanoscale silane penetration technology, forms a warm luster on the UHPC surface similar to natural stone while enhancing wear resistance and stain resistance. This process has passed the scientific and technological achievement appraisal of the Ministry of Housing and Urban-Rural Development, with relevant technical parameters reaching internationally leading levels.

3. Full-Chain Empowerment: A Systematic Solution from Design to Implementation

As a national-level high-tech enterprise, Qinglong Group integrates the technical advantages of stone-grain UHPC panels into its full-chain services: During the detailed design stage, it provides BIM models and texture visualization schemes to help designers optimize texture layout and light-and-shadow effects; In production and manufacturing, relying on an annual capacity of 600,000 m² at its Nanning, Guangxi production base, it achieves standardized production from custom molds to finished product processing; During construction and installation, it employs 3D laser positioning technology to ensure the continuity and precision of large-area stone grain joints; For after-sales maintenance, it offers a surface texture renewal guarantee of up to 15 years. This integrated "design-production-construction-maintenance" model has been successfully applied in projects such as the Nanjing East Road Century Plaza renovation project and the Dongguan Women and Children's Activity Center, earning industry recognition including the AALBORG WHITE Cup UHPC Construction Engineering Innovation Award.

4. Industry Value and Future Outlook

The technical breakthrough of continuous stone-grain UHPC panels not only expands the application boundaries of architectural decoration materials, but also advances the implementation of the "green construction" concept — compared with natural stone, its production energy consumption is reduced by 30% and material utilization is increased to over 95%, in line with the requirements of the national "dual carbon" strategy. Looking ahead, Qinglong Group will continue to deepen innovation in UHPC/GRC/GRG/GRP materials, explore cutting-edge technologies such as AI texture generation and intelligent molds, and provide designers and owners with more expressive and more sustainable building envelope solutions, fulfilling its corporate mission of "creating aesthetically beautiful buildings."