Key Technologies and Quality Control Points for Integrated Construction of GRC Curtain Wall and Insulation System

Amid contemporary innovations in building envelope technology, the integrated construction of GRC curtain walls and insulation systems is becoming a core solution for balancing aesthetic expression with green performance. As an industry participant with 28 years of deep engagement in the UHPC/GRC/GRG/GRP materials field, Qinglong Group has witnessed the technological leap from single decorative function to system-integrated applications. This article systematically analyzes the key technical pathways and quality control points of this process, providing designers and owners with a full-chain technical reference.

GRC Curtain Wall and Insulation Integration: The Technical Logic of Material Synergy

Unlike the superimposed “decoration + insulation” construction of traditional curtain walls, GRC curtain wall and insulation system integration achieves structural innovation through precise matching of material properties. With a flexural strength ≥18MPa and surface density ≤120kg/㎡, GRC (glass fiber reinforced concrete) serves as an ideal matrix for supporting the insulation layer. The composite insulated GRC panels developed at Qinglong's Nanning production base adopt industrial prefabrication of EPS/XPS insulation core materials with GRC face layers, and interface treatment technology increases interlayer bond strength by 40%, solving the industry pain point of insulation layer detachment in traditional wet construction. These factory-prefabricated integrated components reduce construction procedures by 30% compared with on-site assembly, significantly shortening project timelines.

Key Construction Technologies: Full-Process Control from Detailed Design to Installation Precision

The technical difficulty of integrated construction lies in resolving material compatibility and installation coordination. In the detailed design phase, BIM technology is applied for parametric modeling, focusing on optimizing the matching relationship between insulation layer thickness and GRC reinforcement. Through the integrated application of 58 patented technologies, Qinglong's technical team developed a “thermal bridge interruption design module,” achieving a curtain wall heat transfer coefficient (K-value) as low as 0.8W/(㎡·K). The production stage employs an automated material distribution system and steam curing processes, ensuring component dimensional deviations are controlled within ±2mm. On-site installation innovatively adopts 3D laser scanning positioning technology, combined with customized adjustable supports, achieving precision splicing with joint errors between adjacent panels of ≤1mm. This construction method has been validated in projects such as the Nanjing East Road Century Plaza renovation.

Quality Control System: Building a Full Life-Cycle Safeguard Mechanism

As a participating unit in drafting the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), Qinglong has established a three-tier quality control system covering materials, processes, and acceptance. A “double inspection system” is implemented at the raw material stage, with glass fiber content strictly controlled within the 4.5-5% range, and cement-based materials selected from Portland cement of grade P.O42.5R or above; quality traceability during production is achieved through embedded RFID chips; ultrasonic flaw detection is introduced at installation acceptance to verify the integrity of anchoring systems. Specifically targeting insulation layer durability, a “weather resistance accelerated aging test” method was developed, simulating 20 years of natural environmental erosion to ensure a system performance degradation rate of ≤15%. This full-chain quality control capability has enabled Qinglong GRC curtain walls to withstand high-temperature, high-humidity environments in overseas projects in Malaysia, Saudi Arabia, and elsewhere.

System Integration Value: The Transformation Path from Technological Innovation to Engineering Practice

The core value of integrated systems lies in achieving “1+1>2” performance superposition. Compared with traditional curtain wall systems, Qinglong's GRC insulation integration solution can reduce overall costs by 18-25% and cut on-site wet construction volume by more than 60%, while meeting Class A fire resistance requirements. In the Dongguan Women and Children's Activity Center project, the adoption of double-curved GRC insulated integrated curtain walls realized the architect's artistic vision while raising the building's energy efficiency index to the 75% standard. This technical solution is particularly suitable for high-end buildings such as cultural venues and commercial complexes, becoming a preferred path for balancing architectural aesthetics with green performance.

As the construction industrialization process accelerates, GRC curtain wall and insulation system integration technology is embracing broader application space. Qinglong Group will continue leveraging its 28 years of full-chain service experience, guided by the mission of “creating beautiful architecture,” and through material innovation and process optimization, promote the practical implementation of this technology in more landmark projects, providing the industry with systematic solutions that combine technical depth and application value.