How to Secure GRC After Installation: Safe and Stable Fixing Methods and Technical Key Points

The fixing quality of GRC after installation directly affects the service life and use safety of components and is a core step of the entire installation project. The fixing method should be selected based on factors such as component type, installation scenario, and structural conditions, while following the principles of “firm and reliable, evenly loaded, and environment-adapted” to ensure long-term stability of GRC components and avoid hazards such as loosening and falling off.

A high-quality GRC fixing system is the core guarantee of safety. Professional manufacturers design customized fixing solutions based on component characteristics and actual project conditions, balancing safety with decorative aesthetics.

I. Dry-Hanging Fixing: The Mainstream and Efficient Fixing Method

Dry-hanging fixing is the mainstream fixing method for GRC curtain walls, large cladding panels, and similar components. It connects GRC components to the building structure through stainless steel hangers and bolts, requiring no wet work on site, with high installation efficiency and easy maintenance. This method is suitable for GRC components of medium weight and large size. For example, the 300,000-square-meter GRC curtain wall of the Shenzhen Pingshan High-tech Zone Comprehensive Service Center adopts dry-hanging fixing, connected through custom stainless steel hangers and expansion bolts, with hanger spacing densified to 300-400mm according to component weight to ensure even load distribution. Qinglong also adopts a “double insurance” design in dry-hanging fixing: each component is provided with at least two fixing points, and buffer washers are added at the connections between hangers and components to absorb vibration and prevent loosening caused by long-term use.

II. Welding Fixing: Suitable for Heavy and Special-Shaped Components

Welding fixing connects the built-in steel frame of GRC components to the steel frame of the building structure by welding, offering high fixing strength. It is suitable for heavy GRC components, special-shaped components, and high-altitude installation projects. For example, the large GRC art sculpture at the Shanghai Astronomy Museum, over 3 meters in height, is fixed by welding its bottom steel frame to the foundation steel structure, with welds passing flaw detection tests to ensure load-bearing capacity. Qinglong strictly controls the welding process in welding fixing, using CO2 gas shielded welding to prevent high welding temperatures from damaging GRC components, and promptly performs anti-rust treatment after welding, such as applying anti-rust paint and wrapping with anti-corrosion tape, to adapt to outdoor humid and corrosive environments and extend service life.

III. Adhesive Bonding Fixing: For Auxiliary Fixing and Small Components

Adhesive bonding fixing uses a dedicated GRC adhesive to bond components directly onto the installation base surface, suitable for small components, auxiliary fixing, or dry indoor environments. For example, for the GRC European-style moldings of the Nanning Mingyue Lake European Style Town, on the basis of dry-hanging fixing, joints are filled with adhesive to enhance sealing and firmness; small GRC reliefs and decorative blocks for interior decoration can be fixed directly to walls with adhesive. The dedicated adhesive selected by Qinglong features high strength, aging resistance, and low shrinkage, with a bonding strength of over 2.5MPa, meeting long-term use requirements; masking tape is also used to assist positioning and ensure a flat bond.

IV. Combined Fixing: Safety Guarantee for Complex Scenarios

For GRC projects with complex shapes, extra-large dimensions, or special environments, combined fixing is usually adopted, integrating dry-hanging, welding, bonding, and other methods to improve fixing reliability. For example, the GRC bamboo-imitation panel components at the Hainan Changying Universal 100 Fantasy Park adopt a combined “welding + bonding” fixing, where steel frame welding ensures strength and adhesive fills gaps to enhance stability; the hyperbolic GRC panels of the Guangxi New Media Center adopt a “dry-hanging + built-in steel frame welding” combination, ensuring both installation precision and structural safety requirements. Qinglong conducts dedicated load analysis in combined fixing, clarifying the load proportion of each fixing method to ensure coordinated operation and avoid the limitations of a single fixing method.

The fixing method for GRC after installation should be selected scientifically according to site conditions, with the core being to ensure firmness and safety. With 28 years of full-chain service experience, Qinglong designs customized fixing solutions for different projects, strictly following industry standards from material selection to process execution. Through dry-hanging, welding, bonding, or combined fixing, Qinglong has ensured the long-term stable use of many major projects such as the Wuhan Hanxiu Theater and Shenzhen Xinghewan. Choosing a manufacturer with professional design and construction capabilities is the key guarantee of GRC fixing quality.