Analysis of Connection Treatment Solutions and Key Construction Techniques for UHPC Exterior Walls and Door/Window Openings

The jointing precision of a building envelope is a key measure of engineering quality, and the connection between UHPC exterior walls and door/window openings is a core test of both material performance and construction techniques. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group leverages its full-chain technical advantages to provide high-end buildings with systematic solutions ranging from detailed design to after-sales maintenance, ensuring that every detail withstands the dual test of time and aesthetics.

### Technical Challenges and Solutions for Connecting UHPC Exterior Walls with Door/Window Openings

UHPC (Ultra-High Performance Concrete), with its ultra-high strength, excellent durability and design freedom, has become an ideal choice for modern building envelopes. However, the joint areas between UHPC and door/window openings have long been a construction difficulty, as they involve multiple factors such as structural stress, waterproof sealing and thermal bridge control. Based on over a thousand engineering projects, the Qinglong team has summarized a four-step treatment method of "structural embedding – precise layout – flexible connection – sealed protection": BIM technology is used for pre-layout to keep opening positioning errors within ≤2mm; customized UHPC embedded components achieve structural force transfer; and, combined with elastic sealant and integrated insulation design, this method effectively solves problems such as cracking and leakage commonly found in traditional connections.

### Construction Key Points: Full-Process Control from Detailed Design to On-Site Installation

During the detailed design stage, Qinglong relies on the R&D strength of its provincial-level engineering technology center to develop differentiated connection solutions for different climate zones—cold regions emphasize enhanced insulation and thermal break design, while coastal regions focus on wind pressure resistance and anti-corrosion treatment. In the manufacturing stage, automated mold forming ensures that the dimensional deviation of UHPC components around openings is controlled within ±0.5mm, with surface flatness reaching 0.3mm/m. During on-site installation, 3D laser scanning technology achieves millimeter-level positioning, and the composite fixing process of "dry hanging + point support" balances structural safety with seismic deformation capacity. This technology was successfully applied in the Century Plaza renovation project on Nanjing East Road, achieving a seamless connection between translucent UHPC curtain walls and shaped doors and windows.

### Qinglong Full-Chain Service: Systematic Support from Material Innovation to Project Delivery

As a national high-tech enterprise and a participant in formulating UHPC industry standards, Qinglong has built a full industry chain service system covering material R&D, detailed design, manufacturing, construction and installation, and after-sales maintenance. For the detail of door/window opening connections, it provides "turnkey" services from BIM model optimization and customized mold development to on-site technical guidance. Supported by the large-scale capacity of its 600,000㎡ production base in Nanning, Guangxi, combined with a rapid response network of more than 20 offices nationwide, Qinglong ensures efficient project advancement from design to delivery. In recent years, Qinglong has provided UHPC exterior wall system solutions for well-known real estate projects such as Xinghewan and Poly, as well as overseas projects in Malaysia and Saudi Arabia, interpreting its corporate mission of "creating aesthetically beautiful buildings" with the craftsman spirit of "meticulousness and the constant pursuit of excellence."

The connection technique between UHPC exterior walls and door/window openings is not only a reflection of technical details but also a microcosm of building quality. With 28 years of professional accumulation, Qinglong Group deeply integrates material performance with construction technology, providing designers and owners with solutions that exceed expectations, making every building joint a perfect combination of technology and art. Looking ahead, Qinglong will continue to focus on UHPC/GRC/GRG/GRP material innovation, committed to becoming a world-leading manufacturer of architectural decoration materials.