How to Prevent Freeze-Thaw Damage of GRC Exterior Walls in Severe Cold Regions?

In construction projects in severe cold regions, the freeze-thaw damage of GRC exterior walls has always been a focal concern of the industry. As an industry leader with 28 years of experience in UHPC/GRC/GRG/GRP material detailed design, manufacturing, construction and installation, and after-sales maintenance, Qinglong Group fully understands the importance of the durability of GRC exterior walls in low-temperature environments to overall building quality. This article systematically elaborates on prevention solutions for freeze-thaw damage of GRC exterior walls in severe cold regions, from material R&D and process optimization to construction management, providing professional solutions for designers and owners.

### I. Core Technological Breakthroughs in the Freeze-Thaw Resistance of GRC Materials GRC, or glass fiber reinforced concrete, owes its freeze-thaw resistance to the dual guarantee of material mix ratio and production process. As a national-level high-tech enterprise, drawing on 28 years of technical accumulation, Qinglong Group has adopted three key technologies in GRC material R&D for severe cold regions: first, optimizing the cement-based material mix ratio by adding special mineral admixtures to improve density, raising the impermeability grade of GRC components to P12 or above; second, selecting high-alkali glass fibers with alkali-resistant coatings to ensure fiber durability in low-temperature environments; third, introducing UHPC (ultra-high performance concrete) composite technology to enhance the surface freeze resistance of components through gradient structural design. According to third-party testing, Qinglong GRC products retained over 90% of their compressive strength after 300 freeze-thaw cycles at -40℃, far exceeding industry standards.

### II. Full-Process Quality Control of GRC Exterior Walls in Severe Cold Regions Preventing freeze-thaw damage requires closed-loop management from detailed design and manufacturing through construction and installation. At the design stage, the Qinglong team uses BIM technology to simulate component stress and temperature field distribution, optimizing anchoring joints and drainage structures to prevent moisture accumulation. In production, automated assembly lines are employed with strict control of the water-cement ratio and curing conditions, ensuring sufficient internal hydration of components through steam curing. During construction, an innovative "Special Winter Construction Plan" is adopted, including the application of low-temperature adhesives, sealing treatment of installation gaps, and finished-product protection measures. Take a landmark project in Northeast China as an example: after withstanding 5 winters, Qinglong GRC exterior walls showed no cracks, spalling, or other freeze-thaw defects, confirming the effectiveness of full-chain control.

### III. Long-Term Maintenance: The "Protective Shield" for GRC Exterior Walls in Severe Cold Regions As a professional manufacturer integrating after-sales maintenance, Qinglong Group has established a nationwide service network to provide regular inspection and maintenance for GRC exterior walls in severe cold regions. Every spring and autumn, the technical team evaluates component conditions through surface flaw detection, moisture content testing, and other means, promptly repairing minor cracks and replacing aged sealant. For extreme climates, customized protective coating services are also offered to further reduce freeze-thaw risks. This "prevention-first, proactive maintenance" model extends the service life of Qinglong GRC exterior walls to over 50 years, significantly reducing whole-life-cycle costs. For more industry information: WeChat qlfsbl123

### IV. Industry Benchmark: Qinglong GRC's Engineering Practice in Severe Cold Regions With its outstanding freeze-thaw resistance technology, Qinglong Group has successfully undertaken numerous key projects in severe cold regions such as Northeast and Northwest China. From the shaped GRC curtain wall of a commercial complex in Harbin to the extra-large-span GRC sunshades at Urumqi Airport, all achieve a perfect unity of aesthetic design and structural safety. These projects not only passed the rigorous acceptance inspections of local quality supervision departments, but also became exemplary cases of GRC material application in severe cold environments. As a vice-chairman unit of the China GRC Association, Qinglong participated in formulating the "Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC)" (JGJ/T423-2018), providing technical guidance for GRC application in severe cold regions.

Preventing freeze-thaw damage to GRC exterior walls in severe cold regions is a comprehensive test of material performance, process capability, and engineering management. Supported by 28 years of full-chain experience, Qinglong Group dresses buildings in a "frost-proof coat" through technological innovation and refined services. In the future, Qinglong will continue to uphold its mission of "creating beautiful architecture," driving application breakthroughs of UHPC/GRC/GRG/GRP materials in extreme environments and contributing Chinese wisdom to the world's architectural decoration industry. For more industry information: WeChat qlfsbl123