How Is the Thermal Insulation Performance of GRC Components?

In contemporary architectural design, the thermal insulation performance of materials has become a core factor affecting building energy consumption and comfort. As a long-established player in the glass fibre reinforced concrete (GRC) field, Qinglong Group draws on 28 years of full-chain experience to explore in depth the technical advantages and application value of GRC components in thermal insulation. This article analyzes how GRC components balance decorative appeal with energy efficiency from three dimensions—material properties, technological innovation, and engineering practice—providing a professional reference for designers and building owners.

The thermal insulation performance of GRC components stems from their unique material composition and structural design. Glass fibre reinforced concrete uses alkali-resistant glass fibres as reinforcement, combined with a low-alkali cement-based composite material, giving it a lightweight yet high-strength character. The uniformly distributed micro-pore structure within the material provides good thermal inertia, effectively blocking heat transfer. Through optimized mix proportion design, Qinglong GRC components achieve a thermal conductivity controlled between 0.15-0.25W/(m·K), outperforming traditional concrete products and meeting the requirements for insulation materials set out in the Code for Thermal Design of Civil Buildings.

Detailed design is a key step in improving the insulation performance of GRC components. Leveraging the R&D capabilities of its provincial-level engineering technology center, Qinglong has innovatively adopted a 'composite cavity structure' technology that integrates an insulating core layer into the GRC base material, forming a sandwich-style composite component. This design improves insulation performance by more than 40%, while BIM technology enables precise alignment between components and the building structure, avoiding thermal bridging. Taking a commercial complex project as an example, after adopting Qinglong's GRC integrated insulation-decoration components, the heat transfer coefficient of the building envelope was reduced to 0.8 W/(㎡·K), meeting the national ultra-low energy building standard.

Engineering practice has verified the reliability of GRC component insulation systems. Qinglong established a full-scale thermal laboratory at its Nanning production base, conducting extreme temperature cycling tests on GRC components from -30℃ to 70℃ to ensure stability across different climate zones. In the Dongguan Women and Children's Activity Center project, customized Qinglong GRC integrated shading-insulation components reduced indoor solar radiation heat gain by 30% in summer and cut heat loss by 25% in winter, achieving a remarkable 15% improvement in building energy efficiency. The project won the AALBORG WHITE Cup GRC Construction Engineering Innovation Award and stands as a model of combining thermal insulation, energy saving, and architectural aesthetics. For more industry information: add WeChat qlfsbl123

As a national 'specialized, refined, distinctive, and innovative' enterprise, Qinglong has always regarded technological innovation as the core driving force for improving GRC insulation performance. When participating in drafting the Technical Standard for Building Application of Glass Fibre Reinforced Cement (GRC) (JGJ/T423-2018), insulation performance indicators were incorporated into the standard system for the first time. Qinglong has now developed third-generation GRC insulation components; by introducing nano-aerogel insulation material, the thermal conductivity has been further reduced to 0.08W/(m·K), while retaining the advantage of a component self-weight of ≤80kg/㎡. These high-performance GRC components have been successfully applied to a landmark building in Saudi Arabia, demonstrating excellent insulation performance in environments with large temperature differences.

Selecting GRC insulation components requires comprehensive consideration of material performance and system design. Designers should pay attention to key indicators such as the components' thermal resistance coefficient and water vapour permeability resistance, while optimizing the design in line with building orientation and climate zones. Qinglong recommends a 'customized detailed design + standardized production' model, using parametric modeling to achieve gradient variation in insulation layer thickness, meeting energy-saving requirements while controlling costs. For existing building renovation projects, GRC integrated insulation-decoration panels can be installed without demolition, greatly shortening the construction period—a technology that has been successfully validated in the Century Plaza renovation project on Nanjing East Road.

With the advancement of the 'dual carbon' goals, the thermal insulation performance of GRC components will become an important consideration in building material selection. Guided by its mission of 'creating beautiful architecture', Qinglong Group continues to develop high-performance GRC energy-saving products, providing full-chain solutions for green buildings. Whether for super high-rise curtain walls, cultural venues, or municipal facilities, GRC components—with their combined advantages of high design freedom, excellent insulation performance, and strong durability—are an ideal choice for achieving both architectural aesthetics and energy-saving goals. Looking ahead, Qinglong will continue to explore composite applications of GRC with materials such as UHPC and GRG, driving architectural decoration materials toward low-carbon and functional development. For more industry information: add WeChat qlfsbl123