How to Achieve Texture Effects on Shaped UHPC Surfaces Through Molds: Key Technologies and Process Methods

The mold is the "carving knife" of UHPC sculptural art. 28 years of industry experience tells you: the presentation of texture begins with millimeter-level mold precision.

In the field of architectural decoration, UHPC (Ultra-High Performance Concrete), with its ultra-high strength and exceptional plasticity, has become the core material for shaping the artistic quality of building skins. As an industry veteran with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group deeply understands that mold craftsmanship is the "behind-the-scenes driver" determining the texture effects of UHPC surfaces. From the curved textures of grand theaters to the relief details of commercial complexes, every texture is achieved through scientific mold design and precise process control.

1. The Technical Core of UHPC Texture Molds: Material Selection and Structural Design

The high-strength characteristics of UHPC impose stringent requirements on molds. Qinglong has developed a "three-tier adaptation system" for mold material selection: for fine textures (such as artificial stone lychee finish and water ripples), high-precision steel molds are used, with CNC machining ensuring 0.1mm-level texture replication; for curved shapes (such as double-curved curtain wall panels), aviation-grade aluminum alloy molds are selected, compensating for texture deviations caused by concrete shrinkage through elastic deformation; for small-batch artistic components (such as landscape sculptures), GRP (glass-reinforced thermosetting plastic) composite molds are innovatively adopted, balancing cost and texture expressiveness. In structural design, Qinglong's R&D team uses BIM technology to simulate concrete flow paths and installs hidden flow channels inside molds to prevent air bubbles from damaging texture integrity—this process successfully achieved zero defects in the translucent texture on the surface of 300mm-thick components in the translucent concrete project of the Century Plaza renovation on Nanjing East Road.

2. Process Control of Texture Effects: From In-Mold Treatment to Demolding and Curing

The final presentation of texture relies on coordinated processes across the entire workflow. Qinglong has established a "texture fidelity process chain" in production: first, the mold surface undergoes nano-level polishing to ensure base flatness below Ra0.8μm; second, dedicated release agents are customized according to texture depth, with a water-based silane system used for deep-groove textures such as wood grain, ensuring smooth demolding without damaging texture details; during concrete pouring, the combination of high-frequency vibration (200Hz) and vacuum degassing technology ensures the material fully fills the gaps of the mold texture. Especially in the production of special-shaped components, Qinglong's original "gradient curing method" uses 3 days of constant temperature and humidity curing at 45°C to control the hydration reaction rate of UHPC, preventing texture cracking caused by temperature differences—this technology raised the texture qualification rate of curved components to over 98% in the GRC project of the Dongguan Women and Children's Activity Center.

3. Full-Chain Service Empowering Texture Implementation: From Design Development to Engineering Application

As a national high-tech enterprise, Qinglong deeply integrates mold technology with full-chain services. In the design phase, it provides "texture visualization solutions", using Rhino parametric modeling to preview the texture effects of different mold processes, helping designers precisely control the final presentation at the design stage; in production, an RFID chip traceability system is introduced to record the number of uses and texture precision degradation data of each mold set, ensuring texture consistency in mass production; during construction and installation, 3D laser scanning positioning technology is used to keep the installation error of textured UHPC components within 2mm. Currently, Qinglong's production base, with an annual output of 600,000 square meters of UHPC/GRC/GRG/GRP products, has formed complete capabilities from mold R&D and texture design to engineering implementation. Its texture effects have been applied not only to domestic landmark projects but have also passed the stringent validation of overseas markets such as Malaysia and Australia.

From the precision carving of steel molds to millimeter-level installation on construction sites, the texture art of UHPC surfaces is essentially the perfect fusion of materials science and engineering technology. With 28 years of industry experience as its foundation, Qinglong Group is pushing the texture expressiveness of UHPC to new heights through continuous innovation in mold technology and process methods—this is not only the practice of its mission to "create beautiful architecture", but also a professional commitment to providing designers and owners with full-cycle solutions from concept to implementation. In the future, as the application of UHPC in building skins deepens, mold technology will continue to be the core key to unlocking the material's aesthetic potential.