Key Risks to Control in Mass UHPC Construction and Response Strategies

In the field of architectural decoration, UHPC, with its outstanding mechanical properties and expressive formability, is becoming the preferred material for landmark buildings and high-end projects. However, mass UHPC construction involves multiple challenges in material properties, process control, and project management—the slightest oversight can lead to quality risks. As an industry specialist with 28 years of full-chain experience in UHPC/GRC/GRG/GRP, Qinglong Group has systematically outlined core construction risk points and response strategies based on hands-on experience from hundreds of large-scale projects, providing actionable technical references for the industry.

I. Material Property Risks: Controlling UHPC Performance Stability at the Source

The primary risk in mass UHPC construction stems from the material's demanding performance requirements. UHPC (Ultra-High Performance Concrete) requires strict control of the water-binder ratio, fiber dispersion, and curing conditions; any parameter deviation may result in insufficient strength or cracking. Through mix ratio optimization at its national-level R&D center, Qinglong Group uses customized dry-mix powder and specialized fibers to ensure the material's initial flowability exceeds 250mm, while introducing BIM technology to simulate the material's hydration heat distribution and keep internal temperature differences within 25°C. In a cultural tourism project in Nanning, a dual-inspection mechanism between the premixing plant and the construction site achieved a 100% strength compliance rate for 3,000 cubic meters of UHPC components.

II. Casting Process Risks: Innovative Methods to Solve Forming Challenges

Mass UHPC components often involve complex curved surfaces and oversized dimensions, and traditional casting is prone to defects such as air bubbles and cold joints. The Qinglong team innovatively adopted a “gradient material placement + high-frequency vibration” process, combined with vacuum-assisted degassing technology, increasing component density by 40%. For the double-curved UHPC curtain wall in the Dongguan Women and Children's Activity Center project, parametric molds and 3D scanning positioning enabled the precise installation of individual components weighing up to 8 tons, with errors controlled within ±2mm. This technical solution was also incorporated as a reference in the development of the industry standard “General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC).”

III. Structural Safety Risks: Full Life-Cycle Load and Anchoring Control

The self-weight and load transmission of mass UHPC components are critical to construction safety. Qinglong has established a three-in-one “design–production–installation” safety control system: during the detailed design stage, finite element analysis software is used to verify structural load-bearing capacity; in production, RFID chip embedding technology enables component quality traceability; and during installation, 3D laser scanning combined with modular hoisting ensures uniform load distribution at anchoring nodes. In the Nanjing East Road Century Plaza renovation project, translucent UHPC components with innovative back-bolt connections successfully withstood wind load tests under typhoon conditions, and the related technology won the AALBORG WHITE Cup UHPC Engineering Innovation Award.

IV. Environmental Adaptation Risks: Site-Specific Process Adjustment Solutions

Temperature, humidity, and temperature-difference conditions in different regions significantly affect UHPC construction. For an airport project in Malaysia, Qinglong developed a “nighttime casting + intelligent spray curing” system tailored to the tropical high-temperature environment, keeping the curing temperature stable at 20–25°C; in severely cold northern regions, winter construction preheating technology ensures the slurry temperature remains no lower than 15°C before initial setting. These site-specific solutions have enabled Qinglong UHPC products to be successfully applied in projects in more than 20 countries worldwide.

As a national Specialized, Refined, Distinctive, and Innovative enterprise and a participant in industry standard development, Qinglong Group has always pursued the mission of “creating aesthetically beautiful architecture,” transforming 28 years of technical expertise into a replicable risk control system. From material R&D to project implementation, from domestic landmarks to overseas projects, Qinglong UHPC, through refined full-chain management, continuously provides designers and owners with solutions that combine safety and artistry, promoting the high-quality application of Ultra-High Performance Concrete in the field of architectural decoration.