How to Fix GRC After Installation? Core Fixing Methods and Application Scenarios Explained

The fixing method for GRC after installation should be selected based on component type, installation environment, and substrate material. Four core methods are commonly used: dry hanging, adhesive bonding, embedded fixing, and suspended hanging. Leading manufacturers such as Qinglong develop customized fixing solutions based on project characteristics to ensure firm and durable installation.

I. Dry Hanging Method: The Most Widely Used Fixing Method

The dry hanging method is suitable for curtain wall panels and large decorative components, offering high safety and stability. Fixing principle: GRC components are connected to the substrate through metal connectors (angle brackets, hangers), with a 5-10mm gap reserved between the component and the substrate to prevent substrate deformation from affecting the component; Key operation points: drill holes in the substrate to install expansion bolts or chemical anchors, fix the metal connectors, then connect the reserved hangers of the GRC components to the connectors, and adjust the position before tightening for fixation. Each component requires no fewer than 4 fixing points, evenly distributed; Application scenarios: exterior walls of high-rise buildings, curtain walls of large commercial complexes, and heavy component installation. The GRC curtain wall of Qinglong's Xiangshan Science and Technology Park in Longhua, Shenzhen is fixed using the dry hanging method, with stainless steel connectors offering excellent corrosion resistance—no loosening after years of use; Advantages: uniform load distribution, easy disassembly, no damage to component integrity, adaptability to slight substrate deformation, and good wind load and seismic resistance.

II. Adhesive Bonding Method: A Fixing Method for Lightweight Components

The adhesive bonding method is simple to operate, low in cost, and suitable for lightweight components. Fixing principle: special adhesives (such as polymer cement mortar or epoxy adhesive) are used to bond GRC components directly onto the substrate, with fixation achieved through the adhesive's bonding force; Key operation points: clean the bonding surfaces of the substrate and components to ensure they are free of dust and oil stains, apply the adhesive evenly (3-5mm thick), press the component into the predetermined position, adjust flatness with a spirit level, and temporarily secure it until the adhesive cures (usually 24 hours); Application scenarios: small components such as decorative moldings, window surrounds, door surrounds, and lightweight reliefs. The substrate must be flat and solid. Most decorative molding installations in Qinglong communities use this method, with special GRC adhesive selected for a bonding strength of ≥1.5MPa; Advantages: fast construction speed, clean appearance (no exposed connectors), and low cost; Disadvantages: not suitable for heavy components or humid environments, and the adhesive must have weather resistance and anti-aging properties.

III. Embedded Fixing Method: Secure Fixing for Large Components

The embedded fixing method offers high fixing strength and is suitable for heavy-duty, large GRC components. Fixing principle: steel plates or rebar are embedded during GRC component production; during installation, the embedded parts are welded or bolted to the substrate's embedded rebar or steel structure to achieve secure fixation; Key operation points: embed connectors precisely during component production to ensure accurate positioning; during installation, adjust the component position and weld the embedded parts to the substrate connectors, followed by anti-corrosion treatment after welding; large components require multiple embedded points to ensure uniform load distribution; Application scenarios: Roman columns, large sculptures, landscape structures, and long-span components. The large GRC sculptures at Qinglong's Changying Global 100 Fantasy Park in Hainan are fixed using the embedded method, with 10mm-thick embedded steel plates and anti-corrosion-treated welded joints for strong stability; Advantages: highest fixing strength and excellent wind load and seismic resistance, suitable for heavy components used outdoors long-term; Disadvantages: complex construction, higher cost, and requires a professional welding team.

IV. Suspended Hanging Method: Fixing for Ceilings and Suspended Components

The suspended hanging method is suitable for indoor ceilings and suspended decorative components, without occupying substrate space. Fixing principle: GRC components are hung from the top structure (such as floor slabs or steel structures) via hanger rods and hangers, with the hanger rod length adjusted to control component elevation; Key operation points: drill holes in the top structure to install hanger rods (rebar or metal rods), connect the hangers to the component's reserved holes, and adjust the rod length to level the components. Each component requires no fewer than 2 hanger rods with spacing ≤1.5m. Qinglong's indoor ceiling GRC components use this method, with galvanized steel pipes selected as hanger rods for good rust resistance; Application scenarios: indoor ceilings, suspended reliefs, decorative planters, and other components; Advantages: flexible installation, no damage to the wall substrate, and easy later maintenance; Disadvantages: not suitable for heavy components, and the top structure must have sufficient load-bearing capacity.