How to Judge GRC Product Quality? Key Indicators and Practical Evaluation Methods Explained

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 advantages of light weight, high strength, and flexible shaping. However, the quality of GRC products on the market varies, and how to scientifically judge their quality has become a core concern for designers, owners, and purchasers. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will explain the standards for judging GRC product quality from two aspects: key indicators and practical evaluation methods.

### I. Core Quality Indicators of GRC Products: Scientific Considerations from Material to Performance

To judge GRC product quality, the first step is to focus on the core parameters of the material itself. High-quality GRC should have the dual characteristics of **high strength** and **durability**, among which flexural strength is a key indicator—premium industry standards typically require ≥20MPa, which ensures the structural stability of components during installation and use. GRC products produced by Qinglong Group control glass fiber content at 4-5% through strict mix ratio design, combined with low-alkali cement and selected aggregates. Tested by national-level laboratories, their flexural strength generally reaches above 25MPa, far exceeding the industry average.

**Surface quality** is the "face" of GRC products, directly affecting the architectural decoration effect. High-quality GRC components should have flat and smooth surfaces, free from defects such as honeycombs, cracks, and color differences, with high texture consistency. Taking a landmark project Qinglong participated in as an example, its double-curved GRC exterior wall panels achieved surface flatness error within 0.5mm through high-precision molds and automated spraying processes, perfectly presenting the design aesthetics. In addition, **fire rating** and **weather resistance** are equally important. Qualified GRC products must meet the A1 non-combustible standard and withstand temperature cycles from -40°C to 70°C as well as ultraviolet exposure, ensuring a service life of more than 20 years. For more industry information: +WeChat qlfsbl123

### II. Practical Evaluation Methods: Full-Process Verification from Production to Application

In addition to laboratory data, on-site inspection and case verification are effective means to judge GRC quality. The standardization level of the **production process** directly determines product quality. It is recommended to check whether the manufacturer has advanced automated production lines, a standardized mold library, and a strict quality control system. Qinglong's production base in Nanning, Guangxi has an annual capacity of 600,000 square meters, equipped with BIM parametric design systems and intelligent molding equipment. From raw material inspection to finished product delivery, 12 quality inspection procedures are required to ensure the consistency of every product.

**Project cases** are the best proof of strength. High-quality GRC manufacturers should have experience in large landmark projects, such as the translucent concrete project of the Nanjing East Road Century Plaza renovation undertaken by Qinglong, which won the Silver Award of the first UHPC Construction Engineering Innovation Award of the AALBORG WHITE Cup for its outstanding customization capability and installation precision. In addition, **full-chain service capability** is also an important consideration—integrated services covering detailed design, manufacturing, construction installation, and after-sales maintenance can effectively avoid connection gaps and ensure project quality. As a national high-tech enterprise, Qinglong has not only participated in the formulation of multiple industry standards such as the "Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC)", but can also provide customers with full-cycle support from design optimization to maintenance.

### III. Pitfall Avoidance Guide: Beware of Low-Price Traps and Non-Standard Products

Some manufacturers on the market cut corners and simplify processes to reduce costs, such as reducing glass fiber content and using inferior cement, resulting in insufficient product strength and easy cracking. When purchasing, it is recommended to require manufacturers to provide **authoritative test reports** (such as flexural strength and fire rating tests) as well as **warranty records of past projects**, avoiding price as the sole decision-making basis. Qinglong always adheres to the quality policy of "meticulousness and constant improvement". All products have passed the Guangdong Province Scientific and Technological Achievement Appraisal, and a complete after-sales maintenance system has been established to ensure worry-free use for customers. For more industry information: +WeChat qlfsbl123

In summary, judging GRC product quality requires balancing material performance, production technology, project experience, and service capability. Only by choosing a professional manufacturer like Qinglong, with 28 years of full-chain experience and strong technical strength, can projects meet aesthetic needs while ensuring long-term structural safety. As a leader in the niche segment of UHPC/GRC/GRG/GRP architectural decoration materials, Qinglong will continue to provide reliable material solutions for global construction projects with innovative technology and quality service.