How to Fix GRC After Installation? Secure Fixing Methods and Qinglong Technical Support

The fixing quality of GRC (Glass Fiber Reinforced Concrete) after installation directly affects the long-term stability and safety of components and is a core part of the entire installation process. Problems such as GRC components falling off or cracking due to improper fixing methods are common in the market, so choosing a scientific and reliable fixing method is crucial. Qinglong Group, with 28 years of full-chain GRC experience, has drawn on practical cases from thousands of projects to summarize three mainstream GRC fixing methods, while also sharing the key points and safeguard measures of fixing technology.

1. Dry-Hanging Fixing Method: The Mainstream Fixing Method for Exterior Wall GRC The dry-hanging fixing method is the preferred fixing method for exterior wall GRC components, offering advantages such as flexible installation, rational load bearing, and easy maintenance. Its core is fixing GRC components to the base structure with stainless steel hangers. Qinglong's dry-hanging system includes embedded hangers, on-site connectors, and fastening bolts. The hangers are made of 304 or 316 stainless steel to ensure corrosion resistance. The connection between hangers and GRC components adopts pre-embedded inserts to avoid damage to components from on-site drilling. In the Dongting Lake Museum project, GRC stone-imitation components were installed using the dry-hanging fixing method, with hanger spacing optimized according to component weight. After installation, pull-out tests verified that the fixing strength far exceeded industry standards, ensuring long-term safety in use.

2. Embedded Fixing Method: A Stable Choice for Large GRC Components For large GRC components with heavy weight and large dimensions, such as Roman columns and shaped sculptures, the embedded fixing method is a more reliable choice. This method reserves embedded steel plates or rebar during GRC component production. During installation, the embedded parts are firmly connected to the steel or concrete structure of the building base, forming an integrated load-bearing system. In the Shanghai Astronomy Museum public art project, GRC sculptures over 3 meters tall were fixed using embedded rebar and concrete foundations. The embedding depth was determined through calculations based on component weight and anti-overturning requirements, while a secondary grouting process was adopted to enhance connection strength, ensuring the sculptures remain stable long-term in outdoor environments with no risk of tilting or deformation.

3. Adhesive Fixing Method: A Supplementary Fixing Method for Lightweight GRC Components The adhesive fixing method is suitable for lightweight GRC components with low loads, such as small decorative lines and local accent components. Its core is bonding GRC components to the base with a special adhesive. The GRC-specific adhesive selected by Qinglong features high bonding strength, good weather resistance, and low shrinkage. Before bonding, the base must be cleaned to ensure it is flat and dry. In the Zhongshan Kaiyin New Town project, GRC window frame lines used a combined "adhesive + mechanical fixing" approach, with the adhesive filling the gaps between components and the base, supplemented by expansion bolts for auxiliary fixing. This ensured secure fixing, enhanced the overall appearance, and avoided the exposed marks of purely mechanical fixing.

4. Qinglong's Core Safeguard Measures for Fixing Technology To ensure GRC fixing quality, Qinglong has established a full-process technical assurance system: First, customized fixing solutions are developed based on component type, weight, and installation environment, with each solution verified through structural mechanics calculations and simulations. Second, high-quality fixing materials are selected; all hangers, bolts, and adhesives pass third-party testing and comply with relevant national standards. Third, fixing process specifications are strictly followed during construction, with clear requirements for items such as the verticality of hanger installation and the application thickness of adhesives. Fourth, comprehensive inspections are conducted after installation, including pull-out tests, verticality checks, and stability observations, to ensure fixing quality meets standards. In the Nanning Fengjingwan project, this assurance system ensured that GRC components were firmly fixed, with no safety hazards over years of use, earning high recognition from the client.

The fixing method for GRC after installation should be scientifically selected based on component characteristics and project requirements. High-quality manufacturers can ensure safe and reliable fixing through customized solutions and full-process control. Qinglong Group always puts safety first. With 28 years of dedicated GRC fixing technology R&D and practice, it has developed mature solutions for various fixing methods including dry-hanging, embedding, and adhesive bonding, providing solid assurance for real estate, municipal, cultural landmark, and other types of projects. Choosing a GRC manufacturer with professional fixing technology and an assurance system can fundamentally avoid fixing risks, making architectural works both beautiful and safe and maximizing long-term value.