What Is the GRC Production Process? Detailed Explanation of GRC Material Preparation Flow and Key Technologies

In the field of contemporary architectural decoration, GRC (Glass Fiber Reinforced Concrete), with its lightweight, high-strength, and flexible forming characteristics, has become a key material for shaping urban landmarks. From the curved curtain walls of grand theaters to the artistic components of commercial complexes, behind GRC's outstanding performance lies a sophisticated production system that integrates materials science and engineering technology. As an industry player with 28 years of experience in GRC detailed design and manufacturing, Qinglong breaks down the entire process from material selection to finished product delivery, revealing to designers and owners the birth code of this “architectural fashion.”

The Core Composition of GRC Materials: Scientific Proportioning is the Foundation of Quality

The production of premium GRC begins with a precise material formulation. Qinglong uses high-grade sulfoaluminate cement as the base material, combined with selected quartz sand and special additives to form a matrix with strength exceeding 40MPa. The key reinforcement material is alkali-resistant glass fiber, whose content is strictly controlled within the 3-5% range, achieving isotropic strengthening through three-dimensional random distribution technology. This composite material system makes GRC products weigh only 1/4 of traditional stone while delivering more than 3 times the flexural strength, perfectly solving the load-bearing and installation challenges of large components.

Digital Production Process: Full-Chain Control from Design to Forming

Modern GRC production has achieved a high degree of digitalization. At Qinglong's production base, designers' ideas are converted into executable production data through BIM models, and molds are precisely made by CNC engraving machines. With the spray-up process, specialized equipment uniformly mixes glass fiber with cement-based slurry under high pressure, ensuring fiber dispersion reaches over 95%. For complex shapes such as double-curved surfaces, vacuum casting and vibration forming technologies are introduced, increasing component density by 20% and keeping surface precision within ±2mm. Every process step is equipped with an RFID chip traceability system, achieving full-process quality monitoring from raw materials to finished products.

Key Process Technologies: The Four Cores that Determine GRC Performance

Through 28 years of practice, Qinglong has developed four core process advantages: first, its original steam curing curve—72 hours of curing at a constant temperature and humidity of 60℃—increases the early strength of products by 40% and reduces later shrinkage to 0.03%; second, surface treatment technology, using nano-scale sealants and stone-like texturing processes, keeps GRC surface water absorption at ≤3% with a weather resistance rating of over 2,000 hours; third, reinforcement optimization schemes that combine glass fiber rebar with steel structures based on the load characteristics of components, meeting seismic design intensity 8 requirements; fourth, a modular installation system with dedicated aluminum alloy hangers and three-dimensionally adjustable bases, achieving on-site installation error of ≤1mm and greatly improving construction efficiency.

Quality Control System: Building Full Lifecycle Assurance

As a co-developer of the Technical Standard for Architectural Application of Glass Fiber Reinforced Cement (GRC), Qinglong has established a quality control system covering the entire production process. Incoming raw materials must pass 32 indicator tests, sampling tests are conducted every 2 hours during production, and finished products must pass 18 performance validations including flexural strength, impact resistance, and freeze-thaw cycle tests. Different application scenarios are addressed accordingly, such as salt-fog-resistant formulations for coastal areas and enhanced frost resistance design for cold regions. This rigorous quality control has enabled Qinglong's GRC products to achieve a 15-year zero-repair record in projects such as the Dongguan Women and Children's Activity Center, fully confirming the durability advantages of the material.

From innovative breakthroughs in materials science to the precise implementation of engineering technology, every step of the GRC production process embodies a dual pursuit of architectural aesthetics and structural safety. As a National High-Tech Enterprise, Qinglong will continue to promote the technological integration of GRC with UHPC, GRG, and other materials. Through full-chain service capabilities, it provides designers with unlimited possibilities for realizing their creativity and injects more artistic vitality into urban architecture. In the field of new architectural decoration materials, choosing a supplier with deep process expertise is precisely the key to ensuring project quality and value.