How to Secure GRC After Installation: Detailed Steps and Precautions Explained

Fixing techniques determine the safety and lifespan of GRC components—28 years of industry experience teaches you scientific installation

In the field of modern architectural decoration, GRC (Glass Fiber Reinforced Concrete) has become the preferred material for high-end projects such as grand theaters, commercial complexes, and landmark buildings, thanks to its lightweight yet high-strength properties and rich design possibilities. However, the quality of GRC fixing after installation directly affects building safety and the durability of the decorative effect. As a national-level high-tech enterprise with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group has drawn on more than a thousand engineering projects to develop a systematic set of GRC fixing and installation standards that ensure structural safety while achieving aesthetic presentation.

Preparation Before GRC Fixing: From Material Testing to Substrate Treatment

Scientific fixing begins with rigorous preparation. First, GRC components must undergo acceptance inspection upon delivery, with a focus on checking flexural strength (≥15MPa), dimensional deviation (within ±3mm), and the positional accuracy of embedded parts, ensuring compliance with the Technical Standard for Application of Glass Fiber Reinforced Cement (GRC) in Buildings (JGJ/T423-2018). For substrate treatment, 3D laser scanning technology should be used to verify the flatness of the installation surface; concrete substrates should be roughened and cleared of loose dust, while steel structure substrates require rust removal and anti-corrosion treatment—this step is key to preventing later anchor loosening. Qinglong's production base is equipped with a professional testing laboratory that provides mechanical property test reports for materials, offering data support for construction.

Core Fixing Techniques: Key Technical Points of Two Mainstream Solutions

For different building scenarios, GRC fixing mainly adopts a combination of mechanical anchoring and chemical anchor bolts. Dry-hanging fixing is suitable for large-area exterior wall installations, connecting through stainless steel hangers and angle steel brackets; hanger spacing should be controlled at 500-800mm, with at least 4 load-bearing points per component to ensure even load distribution. Embedded fixing is suitable for irregularly shaped components: rebar connectors must be reserved during GRC precasting and welded to the main structure's rebar during installation, with a welding length of no less than 10d (where d is the rebar diameter), followed by anti-corrosion treatment. Notably, Qinglong innovatively adopted a "double insurance" fixing technique in the Century Plaza renovation project on Nanjing East Road, adding epoxy resin grouting on top of mechanical anchoring to increase anchoring force by more than 30%.

Quality Control and Safety Standards During Construction

Fixing construction must strictly follow the "three-line control" principle: deviations in the axis line, elevation line, and contour line must all be controlled within 2mm. A temporary support system should be used during installation and removed only after the fixing elements are fully secured, to prevent component deformation caused by gravity. For installations at heights exceeding 10m, Qinglong recommends using BIM technology for pre-assembly simulation to identify collision issues in advance. In terms of safety, all operators must hold special operation certificates, and fall protection devices must be installed for work at heights—this is also a standard requirement for Qinglong as a Grade II professional contractor for building curtain wall engineering.

Acceptance Criteria and Later Maintenance: Ensuring Long-Term Stability

Acceptance of fixing works requires focused inspection of anchor point tension (≥5kN), joint flatness (≤2mm), and seismic performance (meeting the seismic fortification intensity requirements). Qinglong has established a comprehensive quality traceability system, recording the installation information of each component via RFID chips to facilitate later maintenance. During use, fixing elements should be inspected every 2 years, with a focus on issues such as bolt corrosion and hanger deformation; any looseness found should be reinforced promptly. As a member of the International GRC Association, Qinglong's maintenance team provides technical support services nationwide.

From detailed design to after-sales maintenance, the GRC fixing process is a key link in realizing the material's value. Guided by the philosophy of "meticulousness and excellence," Qinglong Group has transformed 28 years of engineering experience into standardized construction solutions, addressing developers' concerns about safety and durability while meeting designers' demands for shape realization. Only by choosing a GRC manufacturer with full-chain service capabilities can project quality be fundamentally guaranteed—this is also the core reason Qinglong has become a strategic partner of renowned real estate groups such as Vanke and Poly.