Analysis of Mold Cost Proportion in Custom UHPC Components and Influencing Factors

Safeguarding Spatial Aesthetics and Structural Safety — The "Four-Dimensional Management Approach" for Interior GRC Decorative Panel Protection

As modern architectural decoration pursues both form artistry and material performance, GRC (Glass Fiber Reinforced Concrete) has become a preferred material in the field of interior decoration for its lightweight, high-strength and flexible shaping characteristics. However, as a composite material, the long-term stability of interior GRC decorative panels depends not only on the quality of the material itself, but even more on scientific and systematic protective measures. With 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials and drawing on the practice of more than a thousand interior projects, Qinglong Group provides the industry with professional protection solutions across four dimensions: environmental adaptation, installation techniques, daily maintenance, and quality traceability.

### 1. Environmental Adaptation: Building a "Microclimate" Protection Network for GRC Decorative Panels

Temperature and humidity fluctuations, lighting conditions, and air pollutants in the indoor environment are invisible killers of GRC decorative panel durability. Through environmental parameter monitoring, Qinglong's technical team found that when indoor relative humidity stays above 75% for extended periods, the GRC surface is prone to mold growth and aggravated alkali-aggregate reaction. Therefore, the protection system must first establish an environmental adaptation mechanism: in humid areas (such as natatoriums and hot spring hotels), hydrophobic GRC formulations should be adopted, keeping surface water absorption below 3%; for light-sensitive venues such as museums and art galleries, UV-resistant additives must be added to the GRC raw materials to prevent color fading caused by prolonged light exposure. In a provincial museum project, Qinglong applied a nano-scale titanium dioxide coating to the GRC panels, keeping the color difference ΔE below 3 after 6,000 hours of artificial aging tests, far surpassing industry standards.

### 2. Installation Techniques: Upgrading from "Physical Fixing" to "Systematic Protection"

Traditional GRC installation often focuses on mechanical anchoring strength while neglecting the damage that dynamic stress causes to panels. Qinglong's "flexible connection + stress release" installation system, which combines adjustable stainless steel hangers with elastic sealant, gives panels a ±3mm displacement compensation capacity when temperature deformation occurs. In a commercial complex project in Shanghai, this system successfully solved the cracking problem of a large-span atrium GRC ceiling caused by temperature changes. Meanwhile, the "triple protection treatment" during installation is crucial: all metal connectors must receive dual corrosion protection of hot-dip galvanizing + fluorocarbon spraying; panel joints are filled with a combination of silicone structural sealant and closed-cell foam rods, achieving both waterproofing and cushioning functions; the back-mounted insulation layer uses highly breathable rock wool material to prevent internal rusting caused by condensation buildup.

### 3. Daily Maintenance: Establishing Full Life-Cycle Protection Records

Protecting interior GRC decorative panels is not a one-and-done task; a scientific maintenance system is the key to extending service life. Qinglong recommends a three-level maintenance mechanism: daily inspections focus on the aging of joint sealants; quarterly inspections use infrared thermal imaging to detect internal void defects; annual maintenance involves repairing the surface hydrophobic layer and conducting sampling tests of structural performance. For high-end projects, Qinglong has innovatively introduced RFID chip traceability technology—each GRC panel is embedded with a unique identity chip that records data throughout the entire process from production and installation to maintenance, achieving precise "one panel, one record" management. In a five-star hotel project in Guangzhou, this system identified 3 potential anchoring loosening hazards in advance, avoiding the operational impact of later repairs.

### 4. Quality Traceability: Controlling Protection Performance from the Source

The excellent protection performance of GRC decorative panels begins with strict production control. As a participating developer of the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), Qinglong has established a rigorous screening mechanism at the raw material stage: high-purity rapid-hardening sulphoaluminate cement is selected to ensure a 28-day compressive strength of ≥60MPa; alkali-resistant roving glass fiber is used, with content strictly controlled between 4.5%-5.5%; mixing water is treated by ion exchange to prevent harmful impurities from affecting the hydration reaction. Every batch of products must pass 12 index tests, including flexural strength (≥12MPa), elastic modulus (≥15GPa), and frost resistance (no damage after 25 freeze-thaw cycles), building a solid protective foundation from the source.

Protecting interior GRC decorative panels is a systematic project that requires the coordinated cooperation of material suppliers, designers, and contractors. As a national high-tech enterprise and a participant in the development of GRC industry standards, Qinglong Group has always upheld the mission of "Creating Beautiful Architecture," providing designers and owners with GRC solutions that combine aesthetic appeal with structural safety through full-chain services spanning detailed design, manufacturing, installation, and after-sales maintenance. In the future, as the application scenarios of UHPC/GRC/GRG/GRP materials continue to expand, scientific protection will become the core guarantee for achieving the unity of architectural art and engineering quality.