Process and Technical Points for Achieving Continuous Stone Texture Effect on Large UHPC Panel Surfaces

The artistic expression of architecture often begins with innovative breakthroughs in materials. In the field of contemporary architectural decoration, ultra-high performance concrete (UHPC) is becoming the ideal choice for designers seeking a perfect fusion of natural aesthetics and engineering structures, thanks to its outstanding mechanical properties and formative potential. Among its applications, achieving a continuous stone-grain effect on the surface of large UHPC panels represents not only a technical breakthrough in material craftsmanship, but also an important milestone in the evolution of building facade design from industrial texture to natural grain. As an industry participant with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong has always upheld the mission of "creating beautiful architecture," transforming the technical challenges of continuous stone-grain UHPC panels into highlights of architectural aesthetics through full-chain technical integration.

Technical Pain Points and Process Breakthroughs of Continuous Stone-Grain UHPC Panels

Surface treatment of traditional UHPC panels mostly relies on single textures or prefabricated molds, making it difficult to achieve the natural transitions and detail reproduction required for large-area continuous stone grain. Through optimization of material formulations and innovation in mold technology, Qinglong has built a three-step solution of "texture replication - color gradation - structural integration." At the material level, specially formulated mineral admixtures and fiber reinforcement systems enable the UHPC matrix to maintain a compressive strength above 150MPa while achieving an ultimate tensile strain of 0.2%, providing a physical foundation for the three-dimensional presentation of stone-grain textures. In the mold stage, 3D scanning and CNC engraving technologies are introduced to replicate the native textures of natural stone onto mold surfaces at a 1:1 ratio, while flexible release agents enable precise transfer of micron-level textures. In a cultural center project, the Qinglong team successfully achieved a continuous stone-grain effect on UHPC panels with a single panel area of up to 12㎡, with texture jointing errors controlled within 0.5mm—far exceeding conventional industry standards.

Balancing Aesthetics and Engineering under a Full-Chain Quality Control System

Achieving a continuous stone-grain effect is by no means the isolated application of a single process, but a systematic project extending from detailed design to construction and installation. Leveraging the technical resources of its national-level R&D center and provincial-level engineering technology center, Qinglong has established full-process quality control standards covering "design - production - installation." In the design phase, BIM technology is used to simulate stone grain orientation and light-shadow effects, combined with fluid dynamics analysis to optimize panel reinforcement. In production, automated material distribution systems and steam curing processes ensure that the density deviation of each square meter of panel does not exceed 3%. During installation, 3D laser positioning technology is introduced, together with custom metal anchors, to achieve stress-free fixing and prevent texture misalignment caused by thermal deformation. This collaborative model of "aesthetic requirements first, engineering parameters second" enabled the UHPC stone-grain curtain wall of a commercial complex in Nanjing to satisfy the designer's artistic expression of "layered mountain ranges" while passing structural verification for force-12 typhoon loads.

From Technical Innovation to Industry Value: Qinglong's Differentiated Path

As a national-level Specialized, Refined, Distinctive, and Innovative enterprise and a participant in industry standard development, Qinglong has always combined technical innovation with practical application. The process breakthrough of continuous stone-grain UHPC panels has not only expanded the application boundaries of UHPC materials in high-end architectural decoration, but also provided designers with a more imaginative creative medium by integrating the natural aesthetics of traditional stone with the engineering advantages of modern materials. From the irregular stone-grain sunshades of a landmark building in Guangzhou to the sandstone-look UHPC curtain wall of a cultural tourism project in Malaysia, Qinglong, supported by 28 years of full-chain experience, continues to drive the value elevation of UHPC/GRC/GRG/GRP materials from "functional components" to "artistic media." Looking ahead, with the deep integration of parametric design and intelligent manufacturing, personalized customization of UHPC surface textures will achieve greater breakthroughs, and Qinglong will continue to pursue its vision of "becoming a world-leading UHPC/GRC/GRG/GRP manufacturer," exploring more possibilities for the fusion of architectural aesthetics and engineering technology.