Difficulties and Coping Strategies in O&M Inspection of Double-Curved GRC Curtain Walls

In contemporary architectural design, double-curved GRC curtain walls have become the "visual centerpiece" of landmark buildings with their unique curved aesthetics and structural expressiveness. However, with the widespread application of such curtain wall systems in large-scale projects across various regions, the complexity of their operation, maintenance, and inspection has gradually become apparent. As an industry participant with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group, drawing on maintenance practices from hundreds of complex curtain wall projects, provides an in-depth analysis of the core challenges in double-curved GRC curtain wall operation and maintenance, and proposes systematic response strategies based on material characteristics and engineering technology.

I. Three Core Challenges in Double-Curved GRC Curtain Wall Operation and Maintenance

The operation and maintenance challenges of double-curved GRC curtain walls stem from the dual complexity of their material properties and structural forms. First, detection blind spots of irregular structures are the primary challenge. The double-curved surfaces make it difficult for traditional flat-surface detection tools to achieve full coverage, especially in complex areas with a curvature radius ≤300mm, where stress concentration can easily cause micro-cracks. Second, monitoring the degradation of material properties is significantly difficult. Under long-term ultraviolet exposure and temperature/humidity variations, the interfacial bond strength between glass fibers and the cement matrix of GRC components may decline, affecting overall durability. Finally, the safety risks of high-altitude operations cannot be ignored. The non-standardized installation joint design of double-curved curtain walls places far higher demands on operational precision for inspection platform setup and component replacement than conventional curtain walls. For more industry information: +WeChat qlfsbl123

II. Targeted Solutions Based on Material Characteristics

To address the above challenges, Qinglong Group has built a trinity operation and maintenance system of "prevention-monitoring-repair," leveraging its technical accumulation in GRC material R&D and engineering practice. In the prevention stage, RFID chips are embedded during production to achieve full life-cycle traceability of components, combined with BIM models that record installation stress data to provide baseline parameters for later inspection. The monitoring stage employs drone-based infrared thermal imaging and 3D laser scanning technology to precisely capture temperature anomalies and deformation data on double-curved surfaces, supplemented by regular laboratory sampling tests of GRC flexural strength (ensuring it is maintained above the 20MPa standard). For repair solutions, specialized repair mortar and carbon fiber cloth composite reinforcement technology have been innovatively developed, with customized molds for areas of different curvature, ensuring a surface flatness error after repair of ≤2mm.

III. Operation and Maintenance Advantages under the Full-Chain Service Model

As an enterprise integrating full-chain services covering detailed design, manufacturing, construction installation, and after-sales maintenance, Qinglong Group demonstrates unique advantages in the operation and maintenance of double-curved GRC curtain walls. By integrating parametric models from the design stage with installation records from the construction stage, a "digital twin" operation and maintenance archive is established, enabling inspection personnel to quickly locate problem nodes. Its nationwide network of production bases and offices ensures rapid response in emergency material supply and technical support—for example, providing specialized anti-corrosion maintenance plans for GRC curtain walls in coastal salt-spray environments. This closed-loop service model "from design to maintenance" effectively resolves the industry pain point of disconnection between design and construction information in traditional operation and maintenance.

IV. Directions for Technological Innovation through Industry Collaboration

Optimizing the operation and maintenance of double-curved GRC curtain walls requires technological collaboration across the entire industry. As a vice-chairman unit of the China GRC Association, Qinglong Group actively participates in the formulation of standards such as the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC), promoting the establishment of unified operation and maintenance inspection standards. Meanwhile, in collaboration with universities, it has developed self-sensing GRC materials that achieve real-time stress monitoring by embedding optical fiber sensors in components, which is expected to enable a future shift from "passive repair" to "active early warning." In actual projects, such as a double-curved GRC curtain wall project at a cultural center, the application of this collaborative innovation technology reduced operation and maintenance costs by 30% and extended component life to more than 25 years. For more industry information: +WeChat qlfsbl123

The operation and maintenance of double-curved GRC curtain walls is both a technical challenge and a touchstone for demonstrating an enterprise's overall strength. Building on 28 years of industry experience, Qinglong Group provides referenceable solutions for the long-term operation and maintenance of complex curtain wall systems through material innovation, digital technology application, and full-chain service capabilities. As architectural aesthetics and engineering technology continue to converge, only by upholding the craftsman spirit of "meticulousness and the pursuit of excellence" can we advance steadily and far on the path of safeguarding building safety and beauty.