Is UHPC Construction Difficult? A Professional Analysis of the Challenges and Solutions

The difficulty of UHPC construction lies not in “complexity” but in “precision”—a professional team can turn challenges into a smooth path.

After deciding to use UHPC as a building material, construction difficulty becomes one of the top concerns for owners and contractors. Some believe that UHPC's unique properties make its construction process complex and extremely difficult; however, actual cases prove that with a professional team at work, UHPC construction can be completed efficiently and smoothly. Qinglong Group, with 28 years of UHPC/GRC/GRP construction experience and thousands of complex projects undertaken, provides an objective analysis of UHPC construction difficulty from three dimensions—construction process, technical requirements, and team capability—and shares professional solutions.

I. Core Difficulties of UHPC Construction: Precision Requirements Far Exceeding Traditional Materials

Compared with ordinary concrete, UHPC construction does have certain particularities, with the core difficulties centered on “precision control.” The first is the mixing stage: UHPC requires extremely high raw material ratios—the proportions of aggregates, cementitious materials, steel fibers, and admixtures must be precisely controlled with an error margin of no more than 0.5%, and mixing time must be strictly managed; too short leads to uneven mixing, while too long may affect workability. This places far higher demands on mixing equipment and operator expertise than ordinary concrete.

The difficulty of the pouring stage is mainly reflected in flow control and air bubble removal. UHPC has an extremely low water-binder ratio and relatively poor fluidity; for complex shapes, thin-walled components, or hollow-out designs, voids and honeycombing can easily occur during pouring. Meanwhile, the addition of steel fibers increases the difficulty of air removal, and insufficient venting will affect component strength and surface texture. In the Shanghai Century Plaza renovation project, Qinglong Group needed to precisely control vibration intensity and direction during pouring to produce oversized wood-look light-transmitting panels, ensuring that the light-guide rods were firmly fixed in place with no residual air bubbles.

Temperature and humidity control during curing is another major difficulty. UHPC requires low-temperature curing or steam curing to reach design strength; the curing temperature must be maintained at 20-25℃ with humidity no lower than 90%, and the curing cycle is usually 7-14 days. If curing conditions fall short, problems such as slow strength gain and surface cracking may occur. In the Ouargla Hotel project in Algeria, in response to the local hot and arid environment, Qinglong Group built dedicated curing sheds and controlled humidity through a misting system to ensure curing effectiveness.

II. Factors Affecting Construction Difficulty: Project Type Determines the Level of Challenge

The difficulty of UHPC construction is not fixed but is affected by multiple factors such as project type, component design, and construction environment. In terms of component type, standardized flat-panel components present lower construction difficulty—they can be produced through mold-press casting and mass production, with simple on-site installation. In contrast, the construction difficulty of complex special-shaped components, double-curved components, and oversized components increases significantly, requiring custom molds, specialized equipment, and special processes.

In the Guangxi New Media Center project undertaken by Qinglong Group, no two UHPC double-curved exterior wall panels were identical—each component required an individually designed mold, and installation required precise positioning via BIM technology, making construction extremely difficult. Yet, thanks to the professional team and accumulated technical expertise, the project was ultimately completed flawlessly. The UHPC sculptures over 3 meters tall at the Shanghai Astronomy Museum posed challenges in both pouring and hoisting due to their oversized dimensions and complex shapes; Qinglong Group completed the construction smoothly through segmented pouring, custom lifting equipment, and other methods.

The construction environment also affects the level of difficulty. Under extreme conditions such as high temperature, low temperature, high humidity, or strong winds, the mixing, pouring, and curing of UHPC will all be affected, requiring special measures. For example, construction in cold regions requires heating raw materials and insulating mixing equipment, with steam curing applied during the curing stage; work at heights requires stable operating platforms to ensure safe pouring and installation—all of which add to construction complexity.

III. Professional Solutions: Qinglong Group's Secrets to Reducing Difficulty

Although UHPC construction does involve certain difficulties, they can be effectively controlled through professional technology, equipment, and teams. As a leading UHPC construction enterprise in the industry, Qinglong Group has developed a mature difficulty-reduction solution to ensure efficient and smooth construction.

The first is standardized construction procedures. Qinglong Group has established full-process standardized operating specifications covering raw material inspection, mixing, pouring, vibrating, curing, and installation, with clear technical parameters and operational requirements for each stage. For example, automated mixing equipment is used during mixing to precisely control proportions and timing; during pouring, the appropriate vibration method is selected based on component type—high-frequency vibrators for thin-walled components and vacuum-assisted pouring technology for complex-shaped components.

The second is the application of advanced technology and equipment. Qinglong Group widely applies BIM technology, 3D scanning positioning technology, automated curing equipment, and more in its construction to improve precision and efficiency. In the Shanghai Century Plaza renovation project, BIM technology was used to simulate the entire construction process, identifying and resolving component collision issues in advance; 3D scanning positioning was used during installation, ensuring component installation accuracy with an error of no more than 2mm; and automated curing sheds were used during the curing stage, precisely controlling temperature and humidity without manual intervention.

A professional team is the core guarantee for reducing construction difficulty. All of Qinglong Group's construction teams have undergone professional training and assessment; they are familiar with UHPC's material properties and construction techniques and have extensive experience handling complex projects. For each project, a dedicated construction team is formed, receiving pre-job training and technical briefings to clarify key points and difficulties. In the Yangshengtang Pharmaceutical Hangzhou Industrial Park project, the dedicated team completed the installation of 12,000 square meters of UHPC exterior wall panels in just 45 days—an efficiency far exceeding the industry average.

UHPC construction indeed demands more and requires greater precision than ordinary concrete, involving certain technical difficulties, but these difficulties are by no means insurmountable. For teams lacking UHPC construction experience, the difficulty may be considerable; but for professional enterprises like Qinglong Group—with full-chain service capabilities and rich experience in complex projects—construction difficulty can be fully kept within a reasonable range through standardized procedures, advanced technology, and professional teams. Choosing a professional UHPC manufacturer and construction team not only reduces construction risks but also improves construction efficiency and ensures project quality, allowing UHPC's performance advantages to be fully realized and creating high-quality architectural results for the project.