What Is the GRC Production Process: A Complete Breakdown from Raw Materials to Finished Products

In the field of modern architectural decoration, GRC (Glass Fiber Reinforced Concrete) has become the ideal choice for high-end projects such as grand theaters, commercial complexes, and landmark buildings, thanks to its lightweight yet high-strength properties and flexible shaping capabilities. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group provides an in-depth analysis of the complete process from raw material selection to finished product delivery, presenting designers and owners with the professional details of GRC production.

Step One of the GRC Production Process: Raw Material Proportioning and Mixing — Laying the Foundation for Product Performance

The core advantages of GRC stem from scientific material formulations. Qinglong GRC uses high-strength low-alkali cement, alkali-resistant glass fibers, selected quartz sand, and special additives, achieving high-performance specifications of flexural strength ≥20MPa and density ≤1800kg/m³ through precise proportioning. In the professional mixing system, raw materials undergo two processes — dry mixing and wet mixing — to ensure uniform dispersion of glass fibers and prevent clumping that would compromise structural stability. This stage strictly complies with the Technical Standard for Building Applications of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), providing premium base material for subsequent forming.

Mold Design and Fabrication — the "Skeleton" of GRC's Forming Art

As a customized decorative material, the mold craftsmanship of GRC directly determines the precision of finished products. Backed by the technical strength of its provincial-level R&D center, Qinglong employs CAD parametric design and CNC machining technology to produce complex double-curved molds with a minimum curvature radius of 300mm. For different requirements such as European moldings and irregular sculptures, GRP molds, silicone molds, or steel molds are selected respectively to ensure clear reproduction of texture details. For example, in the Dongguan Women and Children's Activity Center project, pre-assembly of molds using BIM technology achieved millimeter-level installation precision, winning the Silver Award at the first GRC Construction Engineering Innovation Awards.

Forming and Curing — the Qualitative Transformation from Slurry to Component

Qinglong GRC adopts a forming process combining spraying and premixing: for large-area flat panel components, mechanical spraying ensures uniform fiber distribution; for complex shapes, manual laying is used, with each layer's thickness controlled at 10-15mm. Formed components enter a constant temperature and humidity curing chamber, undergoing 7 days of standard curing and 28 days of natural curing for steady strength development. Notably, Qinglong's original "gradient curing method" can increase early strength by 30%, effectively shortening the production cycle and meeting the rapid delivery needs of large-scale projects.

Quality Inspection and Surface Treatment — Details Determine Quality Excellence

As a National High-Tech Enterprise, Qinglong has established a full-process quality control system: each batch of products must pass 12 index tests, including flexural strength, water absorption, and freeze-thaw cycles, to ensure compliance with the T/CBMF171-2022 Standard for Ultra-High Performance Concrete (UHPC) Exterior Wall Panels. For surface treatment, various finishes are provided according to design requirements, including stone-effect, wood-grain-effect, and sandblasting; among them, the "mirror-grade" treatment technology enables seamless integration with glass curtain walls, perfectly demonstrated in the Nanjing East Road Century Plaza renovation project.

Full-Chain Services Empowering Project Implementation

From detailed design to after-sales maintenance, Qinglong provides one-stop solutions: 3D laser scanning technology for on-site verification, modular installation processes to improve construction efficiency, and RFID chips for quality traceability. Qinglong currently has an annual production capacity of 600,000 square meters, with services covering real estate, municipal engineering, overseas markets, and other fields, and has established strategic partnerships with renowned enterprises such as Poly and Vanke. As advocated by Qinglong's mission of "Creating Aesthetic Architecture," every step of the GRC production process embodies reverence for technology and the pursuit of art, injecting a continuous drive of innovation into the architectural decoration industry.