Technical Key Points and Quality Control Strategies for Renovation of GRC Components in Existing Buildings

GRC Component Renovation of Existing Buildings: Technical Essentials and Quality Control Strategies from 28 Years of Industry Experience

Amid the wave of existing building renewal, GRC (Glass Fiber Reinforced Concrete) components, as key elements combining decorative and structural functions, have renovation quality that directly affects a building's safety and aesthetics. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group, leveraging its full-chain technical accumulation, has developed a systematic solution for renovating GRC components in existing buildings, providing professional technical support for designers and owners.

Technical Diagnosis Before GRC Component Renovation: Precisely Identifying the Core of the Problem

Renovation of GRC components in existing buildings requires quality risk control at the source. First, visual inspection and non-destructive testing are needed to identify common defects such as surface cracking, rebar corrosion, and loosened anchors. Qinglong's technical team employs 3D laser scanning technology to achieve component deformation detection with 0.1mm precision. Combined with a defect database established through 28 years of engineering experience, they can quickly pinpoint the causes of problems—whether material aging, construction defects, or changes in structural loading—and provide targeted solutions. For example, in a commercial complex renovation project, carbon fiber cloth reinforcement and interface treatment technology successfully repaired GRC decorative line cracking caused by foundation settlement.

Material Performance Upgrading: The Technical Breakthrough Point in GRC Component Renovation

Traditional GRC component renovation often faces material compatibility challenges. Qinglong has achieved high-strength bonding between new and old GRC materials through its self-developed specialized repair mortar. Based on crack-resistant fibers and nano-silane modification technology, this material achieves a flexural strength of 22MPa and 30% improved weather resistance, perfectly adapting to the complex service environments of existing buildings. Meanwhile, for historic building renovation needs, Qinglong offers customized GRC stone-imitation texture treatment. In the Dongguan Women and Children's Activity Center project, surface fine carving and coloring technology enabled the renovated GRC components to achieve 95% similarity to the original stone, preserving historical character while enhancing durability.

Construction Process Quality Control: Whole-Process Standardized Management System

Quality control in renovation projects runs through the entire chain from design deepening and manufacturing to installation. Qinglong uses BIM technology for component breakdown and installation simulation, keeping on-site installation errors within ±2mm. In production, the company strictly implements the Technical Standard for Application of Glass Fiber Reinforced Cement (GRC) in Buildings (JGJ/T423-2018), with every batch of products passing 12 indicator tests including flexural strength and freeze-thaw resistance. During installation, modular lifting and an RFID chip traceability system are innovatively adopted to enable visualized construction management. In the Nanjing East Road Century Plaza renovation project, this system successfully ensured precise alignment between light-transmitting GRC components and the original building structure, shortening the construction period by 20%.

Long-Term Maintenance Mechanism: Building Full Life-Cycle Management for GRC Components

As a National High-Tech Enterprise, Qinglong has established an industry-leading GRC component maintenance database, providing sustainable performance assurance for existing buildings through regular inspections and structural health monitoring. For high-humidity coastal environments, the company has launched a specialized protective coating system, raising GRC components' salt spray resistance to over 5,000 hours. An intelligent monitoring system developed with IoT technology provides real-time warnings of potential risks such as thermal deformation and stress concentration. This integrated "renovation + maintenance" service model has been validated in overseas projects in Malaysia, Saudi Arabia, and other countries, becoming a core competitive strength of Qinglong's international brand.

Renovation of GRC components in existing buildings is a deep integration of technology and experience. With 28 years of professional expertise, Qinglong Group applies innovative UHPC/GRC/GRG/GRP materials throughout the entire building renewal process. From material R&D to engineering practice, from domestic landmarks to overseas projects, the company consistently pursues its mission of "Creating Beautiful Architecture," injecting new vitality into existing buildings. Choosing Qinglong means choosing not only materials and technology, but also a full-chain solution validated by over a thousand engineering projects.