Double-Curved GRC Curtain Wall O&M Inspection: Challenge Analysis and Qinglong Solutions

Behind the beauty of double-curved GRC lies a technical test of operation and maintenance. Double-curved GRC curtain walls are widely used in landmark buildings and high-end commercial projects thanks to their unique artistic forms and spatial expressiveness. However, factors such as complex curved structures and high-altitude working environments present numerous challenges for their operation and maintenance. As a Qinglong manufacturer with 28 years of GRC after-sales maintenance experience, we draw on project practices including the Guangxi New Media Center and Hainan Poly Peninsula No. 1 to explain in detail the maintenance difficulties and solutions.

#Core Difficulties: Three Major Challenges in Double-Curved GRC Operation and Maintenance The operation and maintenance of double-curved GRC curtain walls face unique challenges: first, poor accessibility — complex double-curved surfaces make it difficult for conventional maintenance equipment (such as scaffolding and gondolas) to position accurately, and some areas are even impossible to reach; second, structural complexity — the connection joints of double-curved components are concealed and varied, making it hard to comprehensively identify hidden risks during maintenance, such as corrosion of concealed connectors that is not easily detected; third, high risk of secondary damage — improper operation during maintenance can easily damage curved surface coatings or widen component joints, affecting appearance and waterproofing performance. The double-curved GRC sculpture project at the Shanghai Astronomy Museum once faced the challenge of accessibility for high-altitude maintenance.

#Qinglong Solutions: Full-Cycle Operation and Maintenance System To address the maintenance difficulties of double-curved GRC curtain walls, Qinglong has established a full-cycle operation and maintenance system. First, maintenance access is reserved at the early design stage — during the design phase of double-curved curtain walls, maintenance openings and climbing nodes are rationally arranged; for example, the Guangxi New Media Center project reserved openable maintenance panels in concealed parts of the curtain wall. Second, professional maintenance equipment is employed — using a combination of drone inspection plus rope access technicians for precise operations, drones carry out preliminary hazard screening while rope access technicians carry professional tools for precise maintenance, improving efficiency and safety. Finally, a digital operation and maintenance archive is established, recording information such as installation parameters, connection joint positions, and maintenance history of each component, providing precise references for maintenance; for example, the double-curved GRC curtain walls of the Hainan Poly Peninsula No. 1 project all have dedicated maintenance archives.

#Key Maintenance Content: Critical Areas and Practical Standards Maintenance of double-curved GRC curtain walls must focus on core areas to ensure comprehensive coverage of potential hazards. First, connection joint maintenance — check whether connectors are loose or corroded and whether elastic gaskets are aged, tightening or replacing them promptly when problems are found; second, waterproofing performance maintenance — inspect whether the sealant in assembly joints is cracked or peeling, conduct water spray tests to verify waterproofing effects, and promptly re-apply sealant if leakage is found; third, surface quality maintenance — check whether surface coatings have faded or cracked and whether components have cracks; minor damage is repaired with special materials, while severe damage requires component replacement. In the Nanning Liyuan Hotel project, Qinglong replaced aged sealant in time through regular maintenance, ensuring the waterproofing performance of the curtain wall.

The operation and maintenance of double-curved GRC curtain walls is key to ensuring the long-term safety and stability of projects, relying on professional technology, scientific methods, and extensive experience. With its full-cycle operation and maintenance system, professional equipment, and precise management and control, Qinglong effectively resolves maintenance difficulties and provides lasting protection for double-curved GRC curtain wall projects. As building operation and maintenance receives growing attention, comprehensive maintenance services will become an important competitive strength for GRC manufacturers.