What Flexural Strength in MPa Should High-Quality GRC Achieve? What Is the Industry Standard? Latest Standard Interpretation and Performance Requirements Analysis

Title: "Analysis of Qualified Flexural Strength Values for Premium GRC: Industry Standards, Latest Requirements and Performance Evaluation"

Flexural strength is one of the core indicators for measuring the quality of GRC (glass fibre reinforced cement) materials. It directly affects the load-bearing capacity, durability and safety in use of components, and is a key parameter that designers and owners cannot afford to ignore in material selection. As a professional manufacturer with 28 years of deep expertise in the UHPC/GRC/GRG/GRP field, Qinglong draws on its experience participating in the formulation of national and industry standards, together with hands-on experience accumulated across thousands of projects, to explain for you the flexural strength requirements of premium GRC and the logic behind industry standards.

### The Core Threshold of Premium GRC Flexural Strength: 20MPa as the Quality Benchmark

For construction projects pursuing high quality, the flexural strength of premium GRC must reach 20MPa or above—this is a performance benchmark widely recognized in the industry. This figure is not set arbitrarily, but is formulated based on the wind and impact resistance requirements of GRC in different application scenarios (such as exterior wall cladding panels and large decorative components). When producing GRC components, Qinglong ensures that factory-shipped components consistently meet the flexural strength standard through precise control of high alkali-resistant glass fibre content, optimization of the cement matrix mix ratio, and the use of mature spray or premix forming processes. Some customized high-performance GRC can even exceed 25MPa, meeting the stringent requirements of landmark buildings and large-span components and resolving owners' concerns about component safety at the source.

### Industry Standards for GRC Flexural Strength: From National Standards to the Latest Technical Trends

The core industry standard in China's GRC field is currently the Technical Standard for Building Application of Glass Fibre Reinforced Cement (GRC) (JGJ/T423-2018), which clearly stipulates that the flexural strength of ordinary GRC components should not be lower than 10MPa, while components used in critical locations or with special requirements must reach a flexural strength of 15MPa or above. As one of the enterprises that participated in revising this standard, Qinglong deeply understands the safety logic behind it—as architectural forms grow increasingly complex and material performance requirements continue to rise, the latest technical trends place greater emphasis on "scenario-based customization": for example, exterior wall cladding panels must balance flexural strength with light weight, while landscape components need to balance strength with design freedom. Qinglong provides GRC solutions at the corresponding performance grade according to the project scenario, ensuring the unity of compliance and practicality.

### Beyond Flexural Strength: The Comprehensive Performance Evaluation Logic of Premium GRC

For professional clients, material selection should not rely on a single flexural strength figure alone; greater attention should be paid to the material's comprehensive performance and the manufacturer's full-chain service capability. As a national-level high-tech enterprise, when providing GRC solutions for projects such as grand theatres and commercial complexes, Qinglong takes actual project needs into account while simultaneously controlling indicators such as the components' weather resistance, fire rating and shape precision. For example, in the Nanjing East Road Century Plaza renovation project, the GRC components supplied by Qinglong not only met the flexural strength standard but also achieved a stone-like texture through special surface treatment, blending perfectly with the surrounding environment. At the same time, full-chain services covering detailed design, installation and commissioning, and after-sales maintenance ensured the delivered results and long-term stability of the project.

The qualified flexural strength value of premium GRC is both a bottom line of quality and a reflection of the manufacturer's technical strength. Whether you are a potential client new to the GRC field or a professional client pursuing ultimate performance, choosing a manufacturer like Qinglong—with 28 years of industry expertise, participation in standard formulation and full-chain service capability—is the way to ensure that GRC components fully meet project requirements in terms of performance, safety and form, endowing buildings with more lasting aesthetic and practical value.