Key Process Steps in the Manufacturing of UHPC Exterior Wall Decorative Lines

Quality creates classics, and craftsmanship determines the future. In the field of modern architectural decoration, UHPC exterior wall decorative mouldings have become the preferred material for high-end building facade design thanks to their outstanding mechanical properties and artistic expressiveness. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group leverages its full-chain service capabilities to perfectly integrate the physical properties of ultra-high performance concrete with architectural aesthetics, and through refined manufacturing processes creates decorative masterpieces that combine structural safety with visual impact for every project.

The manufacturing process of UHPC exterior wall decorative mouldings represents a deep integration of materials science and engineering technology, with core processes covering full lifecycle management from raw material proportioning to finished product installation. Drawing on the technical accumulation of its national-level R&D center, Qinglong Group breaks this process down into five key stages, ensuring that every procedure meets millimeter-level precision standards.

I. Precise Formulation of UHPC Materials: The Balancing Art of Performance and Process

As the core competitiveness of a UHPC manufacturer, the material formulation determines the strength, durability and plasticity of decorative mouldings. Qinglong Group uses imported ultra-fine silica fume and specially made steel fibers, optimizing the mix ratio through orthogonal tests, so that the compressive strength of the UHPC material exceeds 150MPa and the flexural strength reaches over 30MPa. During the mixing stage, a planetary mixer achieves nano-level dispersion of the materials, ensuring uniform distribution of steel fibers in the matrix. This process lays the material foundation for subsequent forming and reflects Qinglong's technical advantages in materials R&D as a high-tech enterprise.

II. Customized Development of Mould Systems: The Vehicle for Realizing Complex Shapes

To meet the decorative requirements of different architectural styles, Qinglong Group applies BIM technology for parametric mould design and uses CNC-machined aluminum alloy or GRP moulds, keeping the geometric precision error of the lines within ±0.5mm. For complex shapes such as double-curved and openwork forms, 3D scanning and reverse modeling technology achieve a 1:1 digital match between the moulds and the design drawings. This customized mould development capability is a key guarantee for Qinglong in undertaking landmark building projects, as demonstrated by the successful application of light-transmitting UHPC components in the Century Plaza renovation project on Nanjing East Road, which benefited from the precision mould system.

III. Casting, Forming and Curing Processes: Dual Assurance of Strength and Durability

During casting, Qinglong employs vacuum-assisted casting technology to remove air bubbles, combined with high-frequency vibration compaction, to ensure the density of the concrete matrix. The curing stage combines steam curing with natural curing, enabling the components to reach over 90% of their design strength within 7 days. This standardized production process gives Qinglong's UHPC production lines an annual capacity of 600,000 square meters, able to meet the concentrated supply demands of large-scale projects.

IV. Surface Treatment and Precision Testing: Dual Control of Aesthetics and Quality

To achieve a premium texture for building facades, Qinglong Group has developed a variety of surface treatment processes, including stone-imitation lychee finish, mirror polishing and fair-faced concrete effects. Every finished product must undergo contour inspection by 3D laser scanning and strength spot checks with a rebound tester, ensuring that product quality complies with the industry standard "General Technical Conditions for Non-load-bearing Components of Ultra-High Performance Concrete (UHPC)". This rigorous quality control system has enabled Qinglong products to pass strict certifications in overseas markets such as Malaysia and Australia.

V. Detailed Design of the Installation System: The Final Presentation of Safety and Aesthetics

As a UHPC manufacturer integrating construction and installation, Qinglong Group has innovatively developed an installation system combining dry-hanging and embedded methods, using stainless steel connectors to flexibly connect with the main building structure, which both meets seismic requirements and avoids the quality risks of traditional wet construction. In the Dongguan Women and Children's Activity Center project, this installation process achieved precise assembly of GRC/UHPC composite components and won the Silver Award of the First GRC Construction Engineering Innovation Award.

From materials R&D to project implementation, Qinglong Group, guided by the craftsman spirit of "meticulous attention to detail and constant pursuit of excellence", has elevated the manufacturing process of UHPC exterior wall decorative mouldings into systematic solutions. As a national "Specialized, Refined, Distinctive and Innovative" enterprise, Qinglong has participated in formulating multiple industry standards, providing designers with technical support for realizing their creativity through 28 years of full-chain experience, and creating architectural works that combine safety, durability and artistic expressiveness for owners. In the field of new architectural decorative materials, Qinglong, with the vision of "becoming a world-class leading manufacturing enterprise", continues to drive the innovative application of UHPC technology in building facade design.