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

The realization of architectural aesthetics depends on the meticulous refinement of every detail. As the "refined lines" of a building facade, UHPC exterior wall decorative lines, with their ultra-high strength, excellent durability, and rich shaping capabilities, are becoming the ideal choice for modern building envelope design. Qinglong Group, with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials and supported by its full-chain service capabilities, will provide an in-depth analysis of the key processes of UHPC exterior wall decorative lines from design to forming, revealing how this new building material brings dynamic vitality to architecture.

1. Detailed Design: Precise Conversion from Creative Concept to Engineering Language

The production of UHPC exterior wall decorative lines begins with precise detailed design, which is the foundation for ensuring that the lines are unified with the overall architectural style and structurally safe. Drawing on extensive project experience, the Qinglong team first conducts parametric modeling based on architectural design drawings, using professional software such as Rhino and Grasshopper to optimize the curvature, dimensions, and connection nodes of the lines, while also considering installation feasibility and future maintenance requirements. Taking a commercial complex project as an example, for a 30-meter-high irregular decorative line, the design team used BIM technology to simulate the installation process and controlled the error within 2mm, laying a solid foundation for subsequent production and construction. As a UHPC manufacturer, Qinglong always adheres to the "design first" philosophy, seamlessly connecting aesthetic creativity with engineering practice.

2. Mold Making: The "Master of Replication" for Custom Shapes

The mold is the key carrier for forming UHPC decorative lines, and its precision directly determines the final texture of the lines. Qinglong uses high-precision CNC machining technology to make molds; for complex shapes, fiberglass (GRP) or aluminum alloy materials can be selected to ensure the surface smoothness and dimensional stability of the molds. In the Nanjing Road Century Square renovation project, to achieve the perfect combination of translucent concrete and UHPC lines, the mold team used 3D scanning technology to restore the design curves 1:1, achieving a light transmission uniformity of over 90% for the finished lines. After the mold is completed, strict dimensional verification and surface treatment are required to prevent issues such as air bubbles and deformation from affecting product quality.

3. Material Preparation: The Core Code of UHPC High Performance

The unique properties of UHPC material stem from scientific mix design. Based on project requirements, the Qinglong R&D team mixes raw materials such as cement, quartz sand, steel fibers, and ultra-fine silica fume in precise proportions, achieving uniform mixing through a twin-shaft forced mixer, while controlling the water-binder ratio below 0.2 to ensure the material's ultra-high strength and density. To meet the crack resistance requirements of exterior wall decorative lines, special admixtures are added to improve workability, enabling UHPC to reach a compressive strength of over 150MPa and a flexural strength of over 20MPa, meeting the durability requirements of long-term outdoor environments. As a national high-tech enterprise, Qinglong participated in formulating the industry standard "General Technical Conditions for Non-load-bearing Components of Ultra-High Performance Concrete (UHPC)", and its material formulations have been optimized through thousands of tests, with performance indicators leading the industry.

4. Casting, Forming and Curing: Forging the Ironclad Strength of the Lines

The casting process must be carried out in a professional production workshop, using vacuum casting or vibration molding techniques to ensure the UHPC slurry fully fills the mold and reduces internal pores. After casting, the components undergo a dual process of standard curing and steam curing: first curing for 24 hours in a constant temperature environment of 20℃, then transferring to 90℃ steam curing for 48 hours to promote full hydration reactions and allow the strength to quickly reach the required standards. Qinglong's Guangxi production base is equipped with fully automatic curing kilns, enabling precise control of curing parameters and ensuring stable quality for every batch of products. After curing, fine treatments such as surface grinding and repair are also performed to achieve mirror-level flatness of the line surfaces.

5. Quality Inspection and Installation: The Final Gate of Full-Process Quality Control

Before finished products come off the line, Qinglong adopts a "three-inspection system" to strictly control quality: the first inspection verifies dimensions and appearance, the sampling inspection conducts mechanical performance testing, and the final inspection simulates the installation environment to test adaptability. Qualified UHPC decorative lines will be transported to the site in customized packaging, and a professional installation team will perform precise installation using 3D laser positioning technology to ensure a solid connection between the lines and the building structure. Taking the Dongguan Women and Children's Activity Center project as an example, the Qinglong team, through a modular installation plan, controlled the installation error of more than 1,200 UHPC lines within 5mm, perfectly presenting the design effect.

Every step from design to installation embodies Qinglong's commitment to "meticulousness and the constant pursuit of excellence". As a full-chain service provider of UHPC/GRC/GRG/GRP materials, Qinglong, supported by 28 years of industry experience, deeply integrates material performance with architectural aesthetics, providing customized solutions for real estate, municipal engineering, landmark buildings, and other fields. In the future, Qinglong will continue to focus on the innovation and application of new building materials, empowering architectural beauty with technology, creating aesthetic architecture, and becoming a world-leading outstanding UHPC manufacturing enterprise.