Where Are the Production Difficulties of Perforated GRC Decorative Panels? Analysis of Key Technologies and Process Challenges

In the field of contemporary architectural decoration, hollow-out GRC decorative panels have become the ideal choice for high-end projects such as grand theaters, commercial complexes, and landmark buildings, thanks to their unique artistic expressiveness and structural advantages. However, the production process of this product, which deeply integrates aesthetics with engineering technology, faces numerous technical barriers. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will provide an in-depth analysis of the production difficulties and breakthrough paths of hollow-out GRC decorative panels from three dimensions: material properties, process control, and quality assurance.

1. Precise Balance of Material Proportioning and Reinforcement Systems: The Load-Bearing Challenge of Hollow-Out Structures

The core contradiction of hollow-out GRC decorative panels lies in balancing the “hollow-out ratio” with “structural strength”. Ordinary GRC materials achieve strength improvement through the synergistic effect of glass fibers and the cement matrix, but hollow-out designs cause stress concentration, and traditional formulations struggle to meet load-bearing requirements. Drawing on 28 years of technical expertise, Qinglong Group has developed a dedicated low-alkali cement-based formula that precisely controls glass fiber content within the 4.5%-5.5% range, and adopts a composite reinforcement process combining continuous fibers with chopped fibers, pushing flexural strength beyond 22MPa—more than 30% above the industry standard. To address the differences in stress distribution across various hollow-out patterns, the team has also innovatively introduced finite element analysis technology to simulate the material's stress state in advance, ensuring structural stability within a hollow-out ratio range of 30%-60%. For more industry information: +WeChat qlfsbl123

2. Precision Control of Mold Development and Forming Processes: The Challenge of Achieving Complex Shapes

The artistic value of hollow-out GRC decorative panels is often reflected in complex textures and curved surface designs, which place extremely high demands on mold craftsmanship. Traditional wooden or GRP molds are prone to deformation and insufficient precision, causing finished products to deviate from design drawings by more than 3mm. Relying on its provincial-level engineering technology center, Qinglong Group adopts a mold manufacturing solution combining high-precision CNC engraving with 3D printing, achieving 0.5mm-level dimensional precision control. In the forming stage, the company's pioneering “vacuum-assisted casting + layered vibration” process removes air bubbles in a vacuum environment, while high-frequency vibration ensures uniform filling of the slurry within the hollow-out grid, effectively eliminating defects such as uneven density and surface honeycombing caused by traditional manual forming.

3. Full-Process Control of Curing and Quality Inspection: Ensuring Durability and Safety

The hollow-out structure significantly increases the surface area of GRC decorative panels, accelerating moisture evaporation and making them prone to shrinkage cracks. Qinglong Group has established a fully automated curing kiln system that maintains constant temperature (20±2℃) and humidity (above 90%) for 24 hours, combined with 7 days of subsequent natural curing, keeping the drying shrinkage rate within 0.03%. To meet the impermeability requirements of hollow-out areas, the team developed a dedicated surface sealer that forms a micron-scale protective film, reducing the product's water absorption rate to below 6%. In quality inspection, in addition to conventional physical performance tests, ultrasonic flaw detection and load tests are specially introduced to ensure that the hollow-out areas of every panel are free of internal defects and that single-point load capacity reaches 1.5 times or more of the design value, eliminating safety hazards at the source.

4. Innovative Breakthroughs in Industry Pain Points: Technical Empowerment Through Qinglong's Full-Chain Services

In the current market, the production of hollow-out GRC decorative panels generally faces problems such as insufficient design development capabilities and long project delivery cycles. As a national high-tech enterprise, Qinglong Group integrates its full-chain advantages in design development, manufacturing, and construction installation to provide customers with one-stop solutions “from concept to completion”. Through the deep integration of BIM technology and parametric design, the company can quickly respond to development requirements for complex hollow-out shapes. Backed by the annual production capacity of 600,000 square meters at its Nanning, Guangxi production base, it achieves flexible switching between standardized and customized production, shortening delivery cycles by 20% compared to the industry average. Over the years, Qinglong GRC products have been successfully applied in benchmark projects such as the Dongguan Women and Children's Activity Center and the Century Plaza on Nanjing East Road, driving industry development through technological innovation. For more industry information: +WeChat qlfsbl123

The production of hollow-out GRC decorative panels is a comprehensive test of materials science, engineering technology, and artistic design, and overcoming its technical difficulties requires long-term accumulated experience and continuous innovation. Qinglong Group has always upheld the mission of “creating beautiful architecture”. Through 28 years of deep engagement in the UHPC/GRC/GRG/GRP field, it has continuously conquered industry technical bottlenecks, providing designers and owners with solutions that combine aesthetic value with engineering reliability. In the future, with the development of digital manufacturing and green building materials technology, hollow-out GRC decorative panels will showcase their unique charm in more high-end buildings.