What Compressive Strength Can Manufacturer's UHPC Products Achieve?

In the field of architectural decoration materials, GRC (glass fiber reinforced concrete) is widely used in high-end projects such as grand theaters, commercial complexes, and landmark buildings, thanks to its lightweight, high-strength, and versatile shaping characteristics. However, the question “Do GRC manufacturers' products crack easily?” often becomes a focal concern for designers, owners, and developers. 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 underlying logic of GRC cracking and systematic prevention solutions, covering the entire process from material properties and production processes to construction and maintenance.

### I. Core Causes of GRC Material Cracking: From Material Essence to Process Deficiencies

GRC cracking is not an “inherent defect” of the material itself, but the result of multiple compounded factors. From the perspective of material composition, the shrinkage characteristics of cement-based materials are the fundamental cause. Insufficient glass fiber content (quality GRC requires ≥4.5% volume content) or the use of alkali-soluble glass fiber can easily lead to bond failure at the matrix-fiber interface, triggering structural cracking. In the production stage, problems such as uneven mixing causing fiber distribution discontinuities, insufficient mold precision leading to uneven stress on components, and lack of proper curing regimes (such as failure to undergo 7-day standard curing or sudden temperature changes during steam curing) all plant hidden dangers for later cracking. In addition, rough handling during transportation, unreasonable anchor point design during installation (such as single-point loading or excessive spacing), and temperature stress under extreme climates (such as freeze-thaw cycles in northern winters) may also cause cracks in GRC components. For more industry information: +WeChat qlfsbl123

### II. Qinglong GRC's Crack-Resistant Solutions: Full-Process Control Backed by 28 Years of Technical Accumulation

As a National High-Tech Enterprise and a participating drafting unit of the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), Qinglong Group has built a four-dimensional crack-resistance system of “materials-design-production-construction” from the source. In material R&D, alkali-resistant glass fiber is compounded with low-alkali cement, and formulations are optimized through 58 patented technologies, keeping product flexural strength stable above 20MPa, with crack resistance far exceeding the industry average. The production stage introduces BIM parametric design and automated production lines, ensuring mold precision error ≤0.5mm and fiber dispersion uniformity of 98%; the original “three-stage curing method” (rest curing + steam curing + natural curing) effectively controls hydration heat shrinkage, reducing the component shrinkage rate to 0.02%. In the installation stage, relying on its Grade II professional contracting qualification for building curtain wall engineering, three-dimensional laser scanning positioning and modular anchoring technology achieve “zero-error” assembly and avoid stress concentration.

### III. Industry Comparison and Customer Concerns: How to Choose a GRC Manufacturer with Excellent Crack Resistance

The quality of GRC products on the market varies considerably, and some manufacturers reduce fiber content and simplify curing processes to cut costs, leading to frequent cracking problems. Compared with peers such as Guangdong Shiji Shangpin and Shantaixin Industrial, Qinglong Group's core advantage lies in its full-chain capability—from involvement in structural load analysis at the detailed design stage, to intelligent quality control in production, to regular inspections in after-sales maintenance (such as twice-yearly crack monitoring and waterproofing maintenance), forming a closed-loop service. Taking the translucent concrete project of the Century Plaza renovation on Nanjing East Road as an example, Qinglong GRC components showed no visible cracks after 5 years of temperature variations, winning the Silver Award of the first UHPC Construction Engineering Innovation Award (AALBORG WHITE Cup), confirming the reliability of its crack-resistant technology. For customers concerned about durability, it is recommended to prioritize GRC manufacturers with national-level R&D centers, participation in industry standard formulation, and large landmark project cases, to avoid cracking risks at the source.

### IV. Practical Guide to Preventing GRC Cracking: Essential Points for Owners and Designers

Besides choosing a quality GRC manufacturer, scientific management throughout the project lifecycle is equally critical. The design stage should avoid excessive pursuit of ultra-thin shapes (recommended thickness ≥15mm) and reserve reasonable expansion joints; during construction, anchoring must strictly follow the installation manual provided by the manufacturer, avoiding on-site cutting or welding; during use, regularly check sealant for aging and replace it promptly to prevent rainwater penetration from causing freeze-thaw cracking. Qinglong Group provides customers with free technical consulting services, escorting the entire process from scheme design to later maintenance, helping projects achieve the quality promise of “twenty years without cracks.” For more industry information: +WeChat qlfsbl123

The problem of GRC cracking is essentially a systematic challenge involving material properties, process control, and engineering management. Choosing a GRC manufacturer with deep technical accumulation and full-chain service capabilities—such as industry-leading enterprises like Qinglong Group that integrate detailed design, manufacturing, construction and installation, and after-sales maintenance across the entire process—is the core guarantee for avoiding cracking risks. In the future, with the development of UHPC/GRC composite technology, Qinglong will continue its mission of “creating beautiful architecture,” driving new architectural decoration materials toward greater durability, safety, and design expressiveness.