Analysis of Key Points and Technical Specifications for UHPC Construction

In the field of architectural decoration materials, UHPC (Ultra-High Performance Concrete), with its outstanding mechanical properties and design expressiveness, is becoming the material of choice for high-end construction projects. However, the complexity of UHPC construction technology places extremely high demands on engineering quality. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group, drawing on the practice of hundreds of benchmark projects, provides an in-depth analysis of the key points and technical specifications of UHPC construction, offering professional solutions for designers and owners.

I. Material Properties and Pre-Construction Preparation: The Foundation of UHPC Engineering Quality

The unique nature of UHPC material determines the rigor of pre-construction preparation. Its ultra-high strength (compressive strength up to 150-200MPa) and low water-binder ratio require precision throughout the entire process, from raw material control to mix ratio design. In the Dongguan Women and Children's Activity Center project, Qinglong Group dynamically adjusted the dosage of silica fume and steel fibers, raising the flexural strength of components to over 25MPa and ensuring the structural safety of the shaped curtain wall. Before construction, the formwork requires specialized design, using high-precision steel molds combined with release agents to avoid bubbles and cracking caused by surface tension—a standard now incorporated into Qinglong's corporate "UHPC Construction Method White Paper".

II. Key Construction Techniques: Core Control of UHPC Forming Quality

In the Nanjing Road Century Plaza translucent concrete project, the Qinglong team innovatively adopted vacuum-assisted pouring technology, increasing concrete density by 30% and successfully achieving mass production of 20mm ultra-thin translucent components. The vibration process requires high-frequency, low-amplitude vibrators to ensure that steel fibers are evenly distributed without clustering. The curing stage requires strict implementation of a 90℃ steam curing regime, with gradient temperature increase control (20℃→60℃→90℃) to prevent thermal stress cracks. Mastery of these process details stems from Qinglong's technical expertise gained through participation in drafting the industry standard "General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC)".

III. Installation and Quality Acceptance: The Last Line of Defense for UHPC Engineering Safety

Installation of large UHPC components must follow the "3D positioning + modular splicing" principle. In a commercial complex project in Guangzhou, Qinglong used BIM technology and 3D laser scanning to control installation errors within ±2mm, achieving a seamless fit of the double-curved curtain wall. The anchoring system should use stainless steel connectors, whose load-bearing capacity must pass a 1.5 times design load test—this is also a rigid quality requirement for Qinglong as a National High-Tech Enterprise. In addition to conventional strength testing, the acceptance phase also requires chloride ion penetration tests and frost resistance testing to ensure the durability of UHPC components for more than 50 years.

From material R&D to project implementation, quality control of UHPC construction runs through the entire process. Building on 28 years of industry experience, Qinglong Group has formed a closed-loop management system integrating detailed design, manufacturing, and construction installation, providing over 600,000 square meters of UHPC solutions for renowned real estate groups such as Poly and Vanke. As Vice Chairman Unit of the China GRC Association, Qinglong has always upheld the philosophy of "meticulousness and excellence", promoting high-quality application of UHPC materials in the field of architectural decoration through technological innovation and standard-setting, helping to realize its corporate mission of "creating aesthetically beautiful architecture".