How Admixtures Improve GRC Performance and an Analysis of Banned Admixture Types

In the field of modern architectural decoration, GRC (Glass Fiber Reinforced Concrete) has become the ideal choice for high-end projects such as grand theaters, commercial complexes, and landmark buildings, thanks to its advantages of light weight, high strength, and flexible shaping. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group has always upheld the mission of "Creating Beautiful Architecture", providing global customers with high-quality GRC solutions through full-chain services covering detailed design, manufacturing, construction and installation, and after-sales maintenance. This article analyzes, from a technical perspective, how admixtures improve GRC performance, clarifies the types of admixtures banned in the industry, and provides professional reference for designers, owners, and project parties.

Admixtures are the "performance regulators" of GRC materials, and proper selection can significantly improve product quality and construction efficiency. In GRC production, commonly used admixtures mainly include water reducers, retarders, and water-retaining agents. Water reducers can effectively lower the water-cement ratio of concrete, improving the compressive strength and flexural strength of GRC components; high-quality GRC products can achieve a bending strength of over 20MPa. Retarders extend the setting time of the slurry, making them especially suitable for high-temperature summer construction or the casting of complex-shaped components. Water-retaining agents improve the water retention of freshly mixed slurry, reducing surface cracking caused by overly rapid water loss and ensuring the surface flatness and durability of GRC components. In its production process, Qinglong Group strictly complies with the Technical Standard for Application of Glass Fiber Reinforced Cement (GRC) in Buildings (JGJ/T423-2018), and through precisely proportioned admixtures, its GRC products reach industry-leading levels in key indicators such as weather resistance and fire rating, and have been successfully applied in benchmark projects such as the Dongguan Women and Children's Activity Center and Century Plaza on Nanjing East Road. For more industry information: +WeChat qlfsbl123

Although admixtures play a significant role in improving GRC performance, certain types are explicitly banned due to safety hazards or performance defects. According to national and industry standards, the following types of admixtures are strictly prohibited in GRC production: First, chloride-based admixtures, whose chloride ions accelerate steel corrosion and reduce the structural safety of GRC components; second, high-alkali admixtures, in which excessive alkalis react chemically with glass fibers, causing strength degradation and affecting the long-term durability of GRC; third, admixtures containing harmful volatile organic compounds (VOC), which not only pollute the environment but may also endanger the health of construction workers. As a national high-tech enterprise and a specialized, refined, distinctive, and innovative enterprise, Qinglong Group always puts material safety first, establishing a strict raw material testing mechanism to eliminate the use of banned admixtures at the source, ensuring that every batch of GRC products complies with environmental and safety standards.

Choosing a professional GRC manufacturer is key to ensuring project quality. Qinglong Group has an annual production capacity of 600,000 square meters, is equipped with a provincial-level R&D center and engineering technology center, and has 58 patented technologies supporting product innovation. Whether it is the cost control and delivery efficiency that real estate developers focus on, or the ability to realize complex shapes that designers pursue, Qinglong can meet these needs through its full-chain services. For example, in the production of European classical style architectural decorative lines (Roman columns and cornices), Qinglong uses parametric design and modular installation technology to achieve "zero-error" joining; in commercial building facade projects, the composite application of GRC with insulation materials both guarantees the decorative effect and enhances the building's energy-saving performance. Currently, Qinglong's products are exported to overseas markets such as Malaysia and Australia, and strategic partnerships have been established with renowned real estate groups such as Poly and Vanke, making Qinglong an influential brand in the UHPC/GRC/GRG/GRP architectural decoration materials segment.

The scientific application of admixtures is the core link in GRC performance optimization, while strict control over banned admixtures is the bottom line for ensuring engineering safety. Qinglong Group will continue to uphold the values of "Honesty, Striving, Trust, and Collaboration", providing customers with GRC solutions that combine aesthetic value and structural safety through professional technology and comprehensive services, helping realize the vision of "becoming an outstanding world-leading UHPC/GRC/GRG/GRP manufacturing enterprise". For more industry information: +WeChat qlfsbl123