What Are the Steps for GRC Installation: Detailed Analysis and Operation Guide

In the field of contemporary architectural decoration, GRC (Glass Fiber Reinforced Concrete) has become the ideal choice for high-end projects such as grand theaters, commercial complexes, and landmark buildings, thanks to its lightweight, high-strength properties and flexible formability. However, the professionalism of GRC installation directly affects the final visual effect and structural safety. As the Qinglong Group with 28 years of industry experience, we will systematically explain the standard procedures and key technologies of GRC installation, helping projects achieve a seamless transition from design drawings to perfect realization.

### Pre-Installation Preparation for GRC: Laying the Foundation for Safety and Precision The success of GRC installation begins with rigorous preliminary planning. First, an in-depth design review must be carried out, combining the structural drawings with on-site 3D scanning data to confirm the dimensional tolerances of GRC components, anchoring point positions, and load distribution, ensuring compatibility with the main structure. Qinglong Group uses BIM technology for pre-assembly simulation, detecting component interference issues in advance and keeping errors within ±2mm. When materials arrive on site, the appearance quality of GRC panels (such as surface cracks and flatness) and their physical properties (flexural strength ≥15MPa) must be strictly inspected, while specialized installation tools such as adjustable supports and laser line projectors should be prepared to guarantee high-precision installation.

### Core Steps of GRC Installation: Standardized Operations from Positioning to Fixing **1. Measurement, Layout, and Baseline Positioning** Based on the design axes, a total station is used to establish a 3D coordinate system, and installation control lines for GRC components are marked on the main structure. For curved or irregularly shaped components, Qinglong uses customized measurement tooling to ensure that the 3D coordinate error of each installation point does not exceed 5mm. Special attention should be paid to the reserved allowance for building settlement at this stage, typically providing 20-30mm of adjustment space.

**2. Installation of Embedded Parts and Connection Systems** GRC components are connected to the main structure through stainless steel connectors, which require hot-dip galvanizing to improve corrosion resistance. Qinglong's original "double insurance" anchoring system combines mechanical bolts with chemical anchors, ensuring a load capacity of ≥5kN at each connection point. During installation, a torque wrench must be used to tighten the fasteners to the designed torque, avoiding component cracking caused by over-tightening or instability caused by looseness.

**3. Component Hoisting and Temporary Fixing** Specialized hoisting equipment is used, with appropriate lifting gear selected according to the weight of the GRC component (usually ≤50kg/㎡), and the hoisting angle is controlled between 45° and 60°. During the temporary fixing stage, adjustable supports are used to ensure that the verticality deviation of components is ≤3mm/m and the planar position deviation is ≤10mm. For large combined components, Qinglong adopts the "segmented assembly and overall correction" process to reduce cumulative errors.

**4. Joint Treatment and Waterproof Sealing** A 10-15mm gap is reserved between GRC panels and filled with elastic sealant, with the width-to-depth ratio of the sealant joint controlled at 2:1. The specialized sealant developed by Qinglong offers weather resistance from -40°C to 80°C, adapting to different climatic conditions. Meanwhile, drainage channels are set at the joints to prevent rainwater from seeping into the structural layer.

### Installation Quality Control and Acceptance Standards: Building Long-Term Safety Assurance After GRC installation is completed, multi-dimensional quality testing is required: surface flatness deviation ≤4mm/2m, joint height difference ≤2mm, and squareness of internal and external corners ≤3mm. Qinglong Group has introduced RFID chip traceability technology, with each component carrying identity information that allows real-time retrieval of production and installation data. In addition, a 12-hour water spray test and load testing must be conducted after installation to ensure waterproof performance and structural safety. As a participating unit in drafting the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), Qinglong always executes every project to requirements higher than industry standards.

From detailed design to after-sales maintenance, GRC installation is a systematic project that tests a supplier's full-chain service capability. With 28 years of technical accumulation and engineering practice, Qinglong Group has formed a complete solution from material R&D and customized production to precision installation, setting an industry benchmark in numerous landmark projects at home and abroad. Choosing a professional GRC manufacturer is not only a guarantee of building quality but also an investment in the long-term value of the project.