Key Steps and Process Points in Factory Prefabrication of UHPC Curtain Wall Panels

In the field of contemporary architectural decoration, UHPC (Ultra-High Performance Concrete) has become the preferred material for curtain wall systems thanks to its outstanding mechanical properties and design plasticity. As an industry leader with 28 years of deep expertise in the UHPC/GRC/GRG/GRP materials field, Qinglong Group leverages its full-chain service capabilities to build a refined quality control system during the factory precasting stage, ensuring that every curtain wall panel meets structural safety requirements while achieving architectural aesthetic expression.

The factory precasting process of UHPC curtain wall panels begins with precise detailed design. Three-dimensional parametric modeling based on architectural drawings requires node optimization in combination with material properties, for example using BIM technology to simulate the stress state of panels and avoid cracking risks caused by stress concentration. As a national high-tech enterprise, Qinglong Group's R&D center is supported by 58 patented technologies and can achieve millimeter-level precision design for complex shapes such as double-curved surfaces and hollow patterns. This stage directly determines the feasibility and efficiency of subsequent production.

The scientific proportioning of raw materials is the core of ensuring UHPC performance. Precise blending of components such as quartz sand, cement, and steel fiber requires strictly controlling the water-binder ratio below 0.2, while fiber dispersion technology ensures material homogeneity. The automated batching system at Qinglong's production base keeps the error of each batch of materials within ±1%, providing stable assurance for the panels' compressive strength (≥150MPa) and elastic modulus. For more industry information: +WeChat qlfsbl123

Mold making and casting processes directly affect the forming quality of curtain wall panels. High-precision steel molds or composite resin molds require surface polishing to ensure panel smoothness; during casting, vacuum degassing and high-frequency vibration eliminate air bubbles to ensure compactness. Qinglong's production lines with an annual capacity of 600,000 square meters are equipped with constant temperature and humidity curing kilns, which use 90°C steam curing for 72 hours to rapidly achieve UHPC early strength and shorten the production cycle.

The quality inspection stage builds multiple lines of defense. From mechanical property testing of incoming raw materials, to non-destructive testing of semi-finished products (such as ultrasonic testing for internal defects), to 28-day age testing of finished products for frost resistance, wear resistance, and more, Qinglong has established a quality control process complying with the "General Technical Requirements for Ultra-High Performance Concrete (UHPC) Non-Load-Bearing Components" standard. In addition, the RFID chip embedded in each panel enables full life-cycle traceability management, a technology that has been successfully applied in benchmark projects such as the Nanjing East Road Century Plaza renovation.

As a manufacturer of custom UHPC/GRC/GRG/GRP products, Qinglong Group regards process innovation in the factory precasting stage as the key to enhancing project value. By integrating detailed design, intelligent production, and strict quality control, its precast UHPC curtain wall panels are not only suitable for high-end scenarios such as grand theaters and commercial complexes, but also reduce building structural loads with a lightweight advantage of approximately 1/4 the weight of stone per square meter. In the future, as green building material standards are upgraded, factory-precast modular UHPC components will become an important practice direction for construction industrialization, and Qinglong will continue to drive industry technological iteration with its mission of "creating beautiful architecture". For more industry information: +WeChat qlfsbl123