How Is GRC Fixed After Installation?

In the field of architectural decoration, GRC (Glass Fiber Reinforced Concrete), with its lightweight high-strength properties and rich modeling capabilities, is widely used for exterior wall cladding panels, decorative lines, and landscape components in high-end projects such as grand theaters, commercial complexes, and landmark buildings. However, the fixing quality after GRC installation directly affects building safety and service life, making it a core part of project construction. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group draws on more than a thousand engineering projects to provide systematic GRC fixing solutions for designers, owners, and contractors.

The core goal of the GRC fixing process is to ensure a reliable connection between components and the base structure while accommodating the material's thermal expansion and contraction. Common fixing methods include mechanical anchoring, chemical anchor bolt fixing, and embedded part connections, with differentiated solutions required for different scenarios. For example, exterior wall cladding panels mostly adopt a “back bolt + keel” combined system, in which stainless steel back bolts rigidly connect GRC panels to aluminum alloy keels, and the adjustability of the keels absorbs installation tolerances; indoor irregular-shaped components are better suited to a flexible combination of chemical anchor bolts and embedded parts, avoiding cracking caused by stress concentration. During the detailed design stage, Qinglong uses BIM technology to simulate load conditions, optimizing fixing point spacing and distribution density in advance to ensure that the fixing strength per square meter complies with the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018).

Material selection is the fundamental guarantee of GRC fixing quality. GRC components produced by Qinglong feature built-in anti-corrosion galvanized steel frames, and the welded joints between the frames and anchoring parts undergo three anti-rust treatments, achieving durability of more than 50 years in coastal high-humidity environments. The chemical anchor bolts used for fixing are all brand products certified under GB50367-2013, with pull-out resistance 30% higher than ordinary anchors, forming a “double insurance” together with the keel dry-hanging system. Taking the Nanjing East Road Century Plaza renovation project as an example, Qinglong adopted a translucent GRC and UHPC composite curtain wall system fixed with customized stainless steel clamps, successfully solving the wind load resistance problem of large-span curved components. The project won the Silver Award of the first UHPC Building Engineering Innovation Award (AALBORG WHITE Cup).

Construction details determine the stability of the fixing effect. Qinglong's construction team strictly follows a four-step process of “3D positioning — pre-assembly — on-site reinforcement — sealing and waterproofing”: 3D laser scanning technology achieves a fixing point positioning error of ≤2mm; all exposed bolts are tightened with torque wrenches according to standard torque; joints are filled with elastic sealant, which meets waterproofing requirements while providing micro-deformation space for the components. To address the “loose connection” problem common in traditional installation, Qinglong has innovatively adopted RFID chip implantation technology, which monitors the stress state of fixing points in real time and enables full life-cycle quality traceability. For more industry information: +WeChat qlfsbl123

As a national Specialized, Refined, Distinctive, and Innovative enterprise, Qinglong has not only participated in the formulation of industry standards such as the General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC), but has also transformed its 28 years of engineering experience into a standardized service system. From fixing scheme optimization during detailed design, to precise embedding of inserts during production, and full-process technical supervision during construction, Qinglong safeguards GRC fixing quality with a “full-chain guarantee” model. Whether it is the complex curtain wall system of a landmark building or irregular components in a landscape garden, choosing Qinglong GRC means choosing a safety commitment of “meticulousness and the pursuit of excellence.” For more industry information: +WeChat qlfsbl123