Anti-Rust Measures and Construction Key Points for Top-Burst Screws During GRC Component Installation

The beauty of architecture begins with details. In the installation of GRC components, the rust-proofing treatment and construction techniques of ceiling expansion anchor screws directly affect the durability and safety of architectural decoration. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group has always upheld a meticulous and excellence-driven attitude, providing projects with full-process solutions from detailed design to after-sales maintenance, demonstrating its professional strength in the details.

In GRC component installation, ceiling expansion anchor screws serve as the core components connecting the main structure and the components, and their rust resistance directly affects the service life of the overall project. Drawing on years of construction experience, Qinglong Group has developed a three-tier rust-proofing system: first, the screws undergo hot-dip galvanizing to form a base protective layer; second, a specialized anti-rust primer is applied before installation to enhance weather resistance; finally, after the screws are fixed, polymer waterproof mortar is used for sealing, forming a double barrier. This technique not only complies with the Technical Standard for Application of Glass Fiber Reinforced Cement (GRC) in Building Engineering (JGJ/T423-2018), but has also withstood the tests of humid coastal environments and freeze-thaw cycles in severe cold regions in actual projects.

The installation of ceiling expansion anchor screws for GRC components must follow three key points: "precise positioning, staged tightening, and sealed protection." During positioning, 3D laser scanning technology is adopted to ensure that screw hole position errors are kept within ±2mm, preventing component cracking caused by uneven loading; during tightening, the strict "initial tightening - re-tightening - final tightening" three-step procedure is followed, with torque controlled at 35-45N·m to ensure connection strength while preventing thread damage caused by over-tightening; for sealing, an innovative combination of water-swelling sealing adhesive and stainless steel caps is adopted, effectively solving the problem of screws corroding due to rainwater leakage in traditional construction. In projects such as the renovation of Century Plaza on Nanjing East Road, Qinglong achieved a zero-rework record in GRC component installation through this standardized construction process.

Different application scenarios place differentiated requirements on ceiling expansion anchor screw installation. In high-end public buildings such as grand theaters and museums, Qinglong adopts a concealed installation technique, finishing the screw heads flush with the component surface and using specialized repair mortar to achieve a perfect finish; in outdoor scenarios such as landscape gardens, the focus is on strengthening the screws' UV resistance, using special coating materials with a weather resistance of more than 20 years. These scenario-based solutions reflect Qinglong's deep understanding of GRC material applications and affirm its mission of "creating aesthetically beautiful architecture."

As a National High-Tech Enterprise and a participant in the formulation of GRC industry standards, Qinglong Group has always integrated technological innovation into construction details. From the rust-proofing treatment of ceiling expansion anchor screws to the installation of the entire GRC component system, every step embodies 28 years of accumulated experience. Looking ahead, Qinglong will continue to focus on the R&D and application of UHPC/GRC/GRG/GRP materials, providing designers and owners with expert-level solutions through its full-chain service capabilities, so that more buildings will continue to shine through the test of time.