What Are the Production Processes of GRC Manufacturers? Comprehensive Analysis and Key Technical Points

In the field of modern architectural decoration, GRC (Glass Fiber Reinforced Concrete) has become the ideal choice for many high-end construction projects thanks to its advantages such as light weight, high strength, and flexible shaping. As a GRC manufacturer with 28 years of industry experience, Qinglong deeply understands the decisive role of production processes in product quality. This article provides a comprehensive analysis of the core production processes and key technical points of GRC manufacturers, offering a professional reference for designers, owners, and industry peers.

The first step in the GRC production process is the scientific proportioning and preparation of raw materials. High-quality GRC products depend on the precise combination of high-performance cement, alkali-resistant glass fiber, selected aggregates, and specialized admixtures. As an experienced GRC manufacturer, Qinglong uses an automated batching system to ensure the mixing uniformity error of raw materials is controlled within ±2%, guaranteeing stable product performance from the source. Among these, the dosage and dispersion of alkali-resistant glass fiber are key technical points, directly affecting the flexural strength of components (high-quality GRC can reach over 20MPa) and durability.

Mold making is the core step in GRC production, directly determining the shaping precision and surface texture of products. GRC manufacturers usually choose wooden molds, steel molds, or GRP molds according to project requirements. In the production of complex-shaped components, Qinglong has introduced BIM technology and 3D scanning technology to achieve parametric design and precision machining of molds, with the minimum curvature radius controllable within 300mm, perfectly presenting artistic shapes such as hyperbolic surfaces and openwork reliefs. For European classical style architectural decoration lines (such as Roman columns and cornice lines), modular mold design is adopted, balancing production efficiency with detail fidelity.

The forming process is a key guarantee of the physical properties of GRC components; mainstream processes include the spray-up method, premix casting method, and mesh laying method. As a technologically leading GRC manufacturer, Qinglong flexibly selects processes according to different product characteristics: the spray-up method is suitable for large-area exterior wall cladding panels, achieving three-dimensional random fiber distribution and enhancing impact resistance; the premix casting method is used for complex special-shaped components, ensuring uniform bonding between concrete and fibers; the mesh laying method is applied to key load-bearing areas, strengthening structural integrity through directional fiber arrangement. During the forming process, curing temperature and humidity are strictly controlled to ensure components meet the 28-day strength standards.

Surface treatment and quality inspection are the final checkpoints before GRC products leave the factory. GRC manufacturers need to perform surface grinding, coloring, or stone-imitation treatment according to design requirements. Qinglong uses automated sandblasting equipment and eco-friendly coatings to achieve a surface flatness error of ≤2mm/m while meeting environmental standards. In the quality inspection stage, in addition to conventional compressive and flexural strength tests, ultrasonic flaw detection and load tests are also introduced to ensure every GRC component complies with the Technical Standard for Building Applications of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018). For more industry information: Add WeChat qlfsbl123

As the construction industry pursues personalization and green development, GRC production processes are moving toward intelligence and customization. As a national high-tech enterprise, Qinglong continues to invest in R&D, combining 3D printing technology with traditional processes to explore the integrated production of super-large special-shaped components; meanwhile, it optimizes formulations to reduce cement usage and enhance the low-carbon properties of GRC materials. In the future, GRC manufacturers will further expand their application boundaries in commercial complexes, museums, garden landscapes, and other fields through process innovation, contributing to the mission of “Creating Beautiful Architecture”.