How to Secure GRC After Installation: Detailed Steps and Stabilizing Tips Explained

In the field of architectural decoration, GRC (Glass Fiber Reinforced Concrete) is widely used for exterior wall cladding panels and decorative components in high-end projects such as grand theaters, commercial complexes, and landmark buildings, thanks to its lightweight, high-strength properties and rich modeling possibilities. However, the stability of GRC after installation directly affects building safety and service life, making its fixing technique both a technical priority and a core industry concern. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group has developed a systematic GRC fixing solution based on over a thousand engineering projects, balancing both safety and construction efficiency.

The GRC fixing technique must follow the three-stage principle of "preliminary assessment—precise anchoring—structural adaptation". First, before installation, the matching anchor type should be selected according to the wind pressure load, seismic grade, and GRC component self-weight at the project location, with the force distribution simulated through BIM technology. For example, in exterior wall applications of super high-rise buildings, Qinglong uses a customized stainless steel back-bolt system with a tensile load capacity of over 15kN, far exceeding the industry standard requirement of 8kN. Meanwhile, differentiated fixing solutions are required for different base structures (concrete walls and steel structural frames): concrete substrates prioritize a combination of expansion bolts plus chemical anchors, while steel structures use welded connectors with elastic washers to avoid stress concentration caused by thermal expansion and contraction.

Specific construction steps require strict control of detail precision. Step 1: base treatment must achieve a flatness tolerance of ≤3mm; after cleaning floating dust with a high-pressure water jet, apply an interface bonding agent to enhance the adhesion between GRC and the substrate. Step 2: use 3D laser scanning technology for line marking and positioning, ensuring that the installation deviation of each component is controlled within ±2mm—a precision standard verified in Qinglong's Century Plaza renovation project on Nanjing East Road, which achieved seamless integration between translucent concrete components and glass curtain walls. Step 3: anchoring construction must follow the "symmetrical step-by-step" principle—fix the upper anchor points first, adjust the verticality, and then fix the lower anchor points; each component requires no fewer than 4 anchors with spacing not exceeding 600mm. For irregularly shaped components, Qinglong's original "modular pre-installation" technique completes pre-assembly and numbering in the factory, enabling quick on-site positioning by number and greatly reducing installation errors.

Concealed work treatment and later-stage maintenance are key to ensuring long-term stability. After anchor installation, pull-out tests must be conducted with a sampling ratio of no less than 5%, and each group's test value must exceed 1.2 times the design value. Joint filling uses Qinglong's specially made elastic sealant, with elongation of up to 300%, capable of accommodating the slight deformation of GRC components. Notably, fixing strategies must be adjusted for different climate zones: in severe cold northern regions, the anti-rust coating thickness of anchors should be increased to 120μm, while humid southern environments require weather-resistant silicone sealant to prevent rainwater penetration and rusting. Through regular inspections (quarterly in the first year, then annually), Qinglong's "full life-cycle maintenance system" promptly detects and replaces loose anchors, ensuring stable operation of the GRC system for more than ten years. For more industry information: +WeChat qlfsbl123

As a national high-tech enterprise and a participant in formulating GRC industry standards, Qinglong always puts safety first. From material formula optimization (incorporating basalt fiber to improve crack resistance) to construction technique innovation (developing dedicated installation leveling brackets), it has established a full-process quality control system covering design, production, and installation. In the Dongguan Women and Children's Activity Center project, Qinglong adopted a "double waterproofing + flexible fixing" technique, successfully solving the wind load resistance problem of large-span GRC decorative lines; the project won the Silver Award at the first GRC Construction Engineering Innovation Awards. For designers and owners, choosing a manufacturer with full-chain service capabilities—an enterprise like Qinglong that holds professional contracting qualifications for building curtain wall engineering and has overseas project experience—is the fundamental guarantee of GRC fixing quality.