What Are GRC Manufacturers' Product Testing Standards? Key Indicators and Compliance Requirements Explained

In the field of architectural decoration materials, GRC (Glass Fiber Reinforced Concrete) has become the preferred material for high-end projects such as grand theaters, commercial complexes, and landmark buildings, thanks to its lightweight, high-strength properties and rich styling possibilities. As a Qinglong GRC manufacturer with 28 years of industry experience, we understand that product testing standards are the core of ensuring project quality. This article analyzes the underlying logic of GRC product testing from two aspects—key technical indicators and compliance requirements—to provide professional reference for designers and owners.

I. Core Testing Indicators of GRC Products: Full-Dimensional Control from Materials to Performance

Testing of high-quality GRC products must cover three major dimensions: raw materials, physical and mechanical properties, and durability. Regarding raw materials, the content and dispersion of glass fibers are fundamental. Qinglong GRC manufacturer strictly controls the alkali-resistant glass fiber content to be no less than 4.5%, ensuring uniform bonding between fibers and cement mortar. For physical and mechanical properties, flexural strength (≥12MPa), compressive strength (≥60MPa), and elastic modulus are key indicators that directly affect the load-bearing capacity and deformation resistance of components. For example, in the Dongguan Women and Children's Activity Center project, Qinglong GRC components achieved a flexural strength of over 20MPa, far exceeding industry standards.

Durability testing focuses on long-term service stability, including frost resistance (strength loss ≤15% after 25 freeze-thaw cycles), impermeability (penetration height ≤50mm), and carbonation depth (≤10mm). Qinglong's production base is equipped with a professional laboratory that conducts simulated extreme climate environment testing to ensure product service life under different regional climate conditions. In addition, appearance quality testing cannot be overlooked—surface flatness error must be controlled within 3mm/2m to prevent uneven textures from affecting the building's aesthetic effect.

II. Compliance Requirements: The Dual Constraints of National Standards and Industry Specifications

GRC product testing must strictly follow national standards and industry specifications. The current Technical Standard for Glass Fiber Reinforced Cement (GRC) Building Applications (JGJ/T423-2018) clearly specifies product classification, technical requirements, and testing methods. As a participating unit in drafting this standard, Qinglong has integrated its requirements into the entire production process. For example, GRC panels used for curtain walls must pass verification of the ultimate limit state for load-bearing capacity and the serviceability limit state, ensuring an anchoring system safety factor of ≥2.5.

Beyond national standards, green building material certification and environmental requirements are becoming increasingly stringent. Qinglong GRC products use low-alkali cement and eco-friendly additives, with formaldehyde emissions ≤0.1mg/m³, complying with the Evaluation Standard for Green Building (GB/T50378). For export projects, products must also meet the target country's standards, such as the special requirements of Australia's AS3600 concrete structures code for the fire resistance rating of GRC components. Qinglong Malaysia Building Materials Co., Ltd. has achieved full compliance certification coverage in the Southeast Asian market.

III. Qinglong GRC Manufacturer's Quality Control System: Full-Chain Management from Laboratory to Construction Site

As a national high-tech enterprise, Qinglong has established a "three-level testing" quality control system: incoming raw material inspection (such as cement strength and fiber alkali resistance), sampling inspection during production (mold precision and curing parameters), and full inspection of finished products before delivery (mechanical properties and dimensional deviation). Each batch of products comes with QR code traceability information, allowing users to query testing reports and production batches. In the Nanjing Road Century Plaza renovation project, 3D laser scanning technology achieved component installation errors of ≤2mm, confirming the project precision brought by strict quality control.

In addition, Qinglong has participated in formulating multiple industry standards, including the General Technical Conditions for Ultra-High Performance Concrete (UHPC) Non-Load-Bearing Components, translating cutting-edge technology into regulatory requirements. Addressing customers' concerns about safety and durability, we provide a 50-year service life commitment. Guided by the principle of "meticulousness and striving for excellence," we deliver reliable GRC solutions for real estate, municipal, and overseas projects.

When selecting GRC products, testing standards serve as both a technical threshold and a quality commitment. Backed by 28 years of full-chain experience, Qinglong GRC manufacturer, through stringent indicator control and compliance management, ensures that every product not only meets engineering technical requirements but also endows buildings with unique artistic expression. To learn more about GRC material application cases or technical details, follow Qinglong Group's official channels for professional interpretation.