Key Technical Points and Practical Applications of GRC Component Renovation for Existing Buildings

Technical Essentials and Practical Applications of GRC Component Renovation for Existing Buildings

Amid the wave of urban renewal, revitalizing existing buildings is not only a continuation of function, but also a dual upgrade in aesthetics and structural safety. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group leverages its full-chain technical strength to provide professional solutions for the renovation of GRC components in existing buildings, giving old buildings a new lease on life.

### Core Technical Essentials of GRC Component Renovation

The renovation of GRC components in existing buildings must balance safety, durability, and aesthetics, with key technical essentials running through the entire process of assessment, design, and construction. First, **structural safety inspection** is the foundation: through 3D scanning and material performance testing (such as flexural strength and carbonation depth testing), the degree of component aging is accurately assessed to avoid blind construction. For common problems such as cracks and weathering, Qinglong applies UHPC repair technology, leveraging its ultra-high compressive strength (≥150MPa) and bonding force to achieve both structural reinforcement and surface restoration of components.

Second, **compatible material selection** is the safeguard. Traditional GRC component renovation often faces compatibility issues between the original material and new repair materials. Through in-depth R&D of GRC material formulations, Qinglong has launched a dedicated interface treatment agent to solve bonding challenges between different batches of GRC. For components with complex shapes, GRG material is used for partial replacement; its lightweight, high-strength properties (density of only 1.8g/cm³) reduce structural load while meeting the need to replicate fine textures.

Finally, **green construction techniques** are the trend. Qinglong has innovatively applied modular installation technology, precisely assembling factory-prefabricated GRC/GRP components through a BIM positioning system, reducing on-site wet work and improving construction efficiency by more than 40%. For historic building renovations, GRP faux-stone finishing is used, enhancing durability by more than three times while preserving the original appearance.

### Full-Chain Services Empowering the Implementation of Renovation Projects

As a national high-tech enterprise integrating detailed design, manufacturing, construction and installation, and after-sales maintenance, Qinglong Group resolves renovation project pain points with its "full-chain service" model. In the **detailed design phase**, drawing on 28 years of engineering experience, it provides clients with integrated design from structural safety assessment to aesthetic scheme optimization. For example, in the renovation of a commercial complex, parametric design was used to optimize the curvature of GRC curtain wall lines, achieving a seamless connection with the original architectural style.

In **manufacturing**, Qinglong's Guangxi production base has an annual capacity of 600,000 square meters, using automated production lines to ensure component precision (error ≤2mm) and achieving full lifecycle traceability through RFID chips. For overseas projects, such as the renovation of a landmark building in Malaysia, Qinglong Malaysia Building Materials Co., Ltd. achieves localized production, greatly shortening delivery cycles.

In the **construction and installation phase**, relying on its Grade II professional contracting qualification for building curtain wall engineering, the company applies 3D laser scanning technology to achieve millimeter-level positioning, working with a special engineering (structural reinforcement) professional team to ensure the structural safety of old buildings. In the renovation of a provincial museum, the Qinglong team successfully completed the complete replacement of GRC relief components weighing up to 8 tons, cutting the construction period by 50% compared to traditional methods.

### Practical Cases Testifying to Technical Strength

From the GRC component renovation of the Dongguan Women and Children's Activity Center (winner of the AALBORG WHITE Cup Innovation Award) to the translucent concrete renovation of Century Plaza on Nanjing East Road (UHPC Innovation Award), Qinglong Group drives industry development through technological innovation. In a historic district renovation project, aging wooden decorations were replaced with GRC faux-wood components, preserving the historic character while enhancing durability, earning high recognition from both the owner and the designers.

### Conclusion: Safeguarding Building Life Through Technological Innovation

The renovation of GRC components in existing buildings is both a continuation of a building's historical value and a test of technical strength. Qinglong Group will continue to uphold its values of "honesty, perseverance, trust, and collaboration," focusing on UHPC/GRC/GRG/GRP material technology innovation to provide professional and efficient renovation solutions for clients worldwide, allowing every building to radiate lasting charm through the passage of time. As a vice chairman unit of the China GRC Association, Qinglong will also continue to promote the development of industry standards, supporting high-quality growth in the field of architectural decoration materials.