How to Fix GRC After Installation: Fixing Methods and Precautions Explained

In the field of architectural decoration, GRC (Glass Fiber Reinforced Concrete), with its lightweight, high-strength, and richly formable characteristics, 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. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will explain, from a professional perspective, the core methods and key considerations of GRC installation and fixing, providing an authoritative technical reference for designers, owners, and contractors.

GRC installation and fixing must balance structural safety with decorative effect. Common fixing methods fall into two main categories: mechanical anchoring and chemical anchoring. Mechanical anchoring directly connects GRC components to the main structure through metal connectors (such as angle steel and embedded parts), and is suitable for scenarios with heavy loads or high substrate strength. Its advantages lie in clear force transmission and convenient installation; Qinglong's standardized connector production line at its Nanning production base can ensure component precision of ±0.5mm. Chemical anchoring uses high-strength rebar planting adhesive to embed bolts or steel bars into the substrate structure, and is suitable for complex shapes or cases where the substrate is concrete or steel structure. Qinglong's independently developed rebar planting adhesive has a pull-out resistance exceeding 20MPa in third-party testing, meeting the stringent requirements of the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018).

GRC fixing techniques vary significantly across different application scenarios. Exterior wall cladding panels require a composite fixing system of "flexible connection + rigid restriction", using spring washers to absorb thermal deformation stress and prevent cracking or falling off caused by thermal expansion and contraction; decorative lines (such as Roman columns and cornices) require special attention to joint concealment, and Qinglong's BIM pre-assembly technology can simulate the installation process in advance, ensuring perfect integration between connectors and line profiles. For landscape components (benches, flower beds), fixing must take ground settlement into account; adjustable bases are recommended, combined with Qinglong's patented anti-loosening nuts (Patent No. ZL2023XXXXXXXXX) to achieve long-term stability. To learn more industry information: add WeChat qlfsbl123

Considerations for GRC fixing construction run through the entire installation process. In the preparation stage, the substrate must undergo strength testing (concrete substrate strength no lower than C25), and surface dust and oil stains must be removed; during installation, a 3D laser line projector should be used for positioning to ensure component verticality deviation ≤3mm/m; post-installed embedded parts must undergo pull-out tests, with the pull-out resistance of each connector ≥5kN. As a national high-tech enterprise, Qinglong strictly implements the "three-inspection system" during construction and achieves quality traceability through RFID chips. In the Nanjing East Road Century Plaza renovation project it undertook, the fixing precision of GRC translucent concrete components was controlled within ±1mm, winning the Silver Award of the AALBORG WHITE Cup UHPC Construction Innovation Award.

Maintenance and inspection during long-term use are equally critical. It is recommended to conduct a comprehensive inspection of the GRC fixing system annually, focusing on connector corrosion, bolt tightness, and sealant aging. Qinglong's after-sales maintenance services include on-site assessment by a professional inspection team; for coastal high-humidity environments or severe cold regions, customized anti-corrosion and anti-rust solutions are available, and the GRC fixing system of its overseas project (a commercial complex in Malaysia) remains intact after 10 years of use. As a vice-chairman unit of the China GRC Association, Qinglong always upholds the principle of "meticulousness and continuous improvement", delivering safe and reliable GRC decoration projects for clients through full-chain services covering detailed design, manufacturing, construction and installation, and after-sales maintenance.