How to Achieve Continuous Stone Texture on Large UHPC Panel Surfaces: A Study of Technical Principles and Process Practice

In the field of contemporary architectural decoration, UHPC (Ultra-High Performance Concrete), with its outstanding mechanical properties and design plasticity, is becoming the ideal choice for high-end building skins. However, how to achieve a continuous stone-grain effect on the surface of large-area UHPC panels that rivals natural stone has long been a technical challenge in the industry. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group has successfully solved this challenge through integrated innovation in detailed design, manufacturing, and construction installation, providing designers and owners with a solution that combines aesthetic value and engineering reliability.

I. Technical Principles of the Stone-Grain Effect on UHPC Surfaces: Material Properties and Process Breakthroughs

The realization of a continuous stone-grain effect in UHPC lies at its core in the synergy between material modification and texture-forming technology. Relying on its provincial-level R&D center and an accumulation of 58 patented technologies, Qinglong Group has built a technical system across three dimensions: First, through optimized gradation of mineral admixtures and fiber dispersion technology, the fluidity and plasticity of the UHPC matrix are improved by 30%, laying the foundation for precise texture replication; Second, digital mold engraving technology converts the texture data of natural stone into high-precision mold patterns, ensuring that the texture deviation per square meter of panel is controlled within 0.2mm; Finally, the innovative application of layered casting and gradient curing processes gives the stone-grain color transitions a natural look, avoiding the color discontinuity problems of traditional imitation-stone techniques.

II. Full-Chain Process Practice: Quality Control from Design to Installation

As a custom UHPC product manufacturer, Qinglong Group integrates the realization of the stone-grain effect into whole-process quality control. In the detailed design stage, BIM technology and Rhino parametric design software are used to simulate the continuity of stone-grain joints in advance, avoiding the risk of texture misalignment during on-site installation; In the manufacturing stage, relying on intelligent production lines with an annual capacity of 600,000 square meters at its Guangxi Nanning production base, an automated material placement system and steam curing processes are adopted to ensure batch-to-batch stability of the stone-grain effect; During construction and installation, 3D laser scanning positioning technology achieves millimeter-level joint precision, giving the stone grain of large-area curtain walls an overall sense of flow. In the renovation project of Century Plaza on Nanjing East Road, the Qinglong team relied precisely on this process to successfully create a 1,200-square-meter translucent UHPC stone-grain curtain wall, winning the AALBORG WHITE Cup UHPC Construction Engineering Innovation Award.

III. Industry Value and Application Prospects: Redefining the Aesthetics of Building Skins

The successful development of continuous stone-grain UHPC panels provides new possibilities for architectural design. Compared with traditional stone, its weight is only 1/4 that of natural stone, yet it offers higher flexural strength (≥20MPa) and weather resistance, making it especially suitable for exterior wall cladding panels and shading systems of high-end public buildings such as grand theaters and commercial complexes. As a National High-Tech Enterprise, Qinglong Group has applied this technology to more than 300 landmark projects in China and exported it to overseas markets such as Australia and Saudi Arabia. In the future, with the advancement of the industry standard "General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC)", stone-grain UHPC will play an even greater substitution value in the field of imitation-stone decoration, helping to fulfill the corporate mission of "Creating Beautiful Architecture".

From material R&D to project implementation, Qinglong Group has demonstrated the technical boundaries of UHPC decorative materials with 28 years of professional experience. By deeply integrating process innovation with the pursuit of aesthetics, it has not only provided customers with solutions that exceed expectations, but has also promoted the high-quality application of UHPC/GRC/GRG/GRP materials in the field of architectural decoration. Under the vision of "Becoming a World-Class Leading Manufacturing Enterprise", Qinglong will continue to explore the intersection of materials and art, injecting more possibilities into building skin design.