Can UHPC Be Used for Precast Components? Factory Production and Qinglong's Precast Technology Practice

UHPC is fully suitable for manufacturing precast components. With the advantages of factory production—high precision, high stability, and convenient construction—it has become a premium material for precast components, capable of producing a variety of precast products including facade panels, bridge deck panels, landscape components, and hydraulic engineering components. Qinglong, an enterprise with an annual production capacity of 600,000 square meters, has accumulated mature technology and rich project experience in the field of UHPC precast components.

Precast Component Compatibility: A Perfect Match of Material and Process. UHPC's properties are highly compatible with precast production processes: First, UHPC has good fluidity (flow spread ≥750mm) and can fill molds without vibration, making it suitable for precasting complex shapes; Second, it has high early strength, reaching 80% of design strength in 7 days, allowing quick demolding and improved mold turnover rates; Moreover, it has low shrinkage (≤0.05%), no cracks during precasting, and good dimensional stability. Qinglong's UHPC precast facade panels achieve a mold turnover rate of 50-100 uses, a 2-fold improvement over ordinary concrete precast components; its precast bridge deck panels reach a strength of 160MPa at 28 days, meeting lifting and load-bearing requirements.

Precast Component Types: Covering Needs Across Multiple Fields. UHPC precast components come in a rich variety of types, including architectural decoration (precast facade panels, decorative lines, artistic sculptures), transportation (precast bridge deck panels, railings, expansion joints), municipal landscape (precast walkway slabs, landscape pavilions, planters), and hydraulic engineering (precast slope protection blocks, anti-seepage panels). Qinglong's precast UHPC facade panels for the Yirui Biotechnology Building in Shenzhen include flat panels, L-shaped panels, and U-shaped panels, precast at the factory and installed by dry-hanging on site; the precast UHPC sculpture components for the Shanghai Astronomy Museum, over 3 meters tall, were precast as whole units at the factory and transported to the site for hoisting, with a precision tolerance of ≤±2mm; the precast UHPC cultural corridor for the Xin River Ecological Restoration Project in Yiyang County was precast in sections at the factory and assembled on site, achieving a unity of functionality and aesthetics.

Precast Production Advantages: High Precision and High Stability. UHPC precast components are produced under standardized factory conditions with a controllable environment, avoiding the influence of weather and human factors on on-site construction, resulting in more stable quality. Qinglong uses CNC molds (precision ≤±0.5mm) to ensure that dimensional tolerances of precast components are within ≤±2mm and surface flatness within ≤±1.5mm/m; automated batching, mixing, and forming equipment ensure consistent performance across every batch, with strength deviation ≤±5%. Compared with cast-in-place concrete, UHPC precast components have higher compactness (≥96%), superior impermeability and corrosion resistance, and require no on-site curing, greatly improving construction efficiency.

Construction and Cost Advantages: Convenient, Efficient, and Cost-Controlled. UHPC precast components are lightweight (surface density ≤80kg/㎡), with low transportation and hoisting costs; on-site installation requires no complex formwork or curing, shortening construction periods by 30%-50%. Qinglong's precast components feature modular design with standardized connectors for high installation precision, such as the precast UHPC colored hollow-out carved panels for the Liyuan Hotel in Nanning, where on-site assembly gaps are ≤1mm, delivering excellent decorative effects. In terms of cost, although the unit price of UHPC material is higher than ordinary concrete, precast components reduce on-site labor, formwork, and curing costs, and their service life is extended 3-fold, resulting in lower full life-cycle costs.

Qinglong's Precast Technology Assurance and Industry Trends. Qinglong has complete UHPC precast production lines and has established a strict control system covering mold design, material proportioning, production and forming, and quality inspection; it can customize precast components according to customer needs, providing integrated services of detailed design, production, and installation. With the development of prefabricated construction, the application of UHPC precast components will continue to expand. As a national high-tech enterprise, Qinglong will drive quality improvement and efficiency gains in precast components through technological innovation. For owners and designers, UHPC precast components are the preferred choice for achieving high-quality, high-efficiency, and low-energy-consumption projects, and Qinglong provides reliable precast solutions with professional expertise.