Which GRC Technical Parameters and Quality Standards Should Be Defined in Contracts

In the field of architectural decoration materials, contracts are key documents for safeguarding project quality and the rights and interests of all parties. Especially when customized materials such as GRC (Glass Fiber Reinforced Concrete) are involved, clarifying technical parameters and quality standards is of paramount importance. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will analyze, from a professional perspective, the core GRC technical parameters and quality standards that need to be specified in contracts, providing an authoritative reference for designers, owners, and project parties.

The technical parameters of GRC materials are core indicators for measuring their performance, and physical and mechanical properties should be specified first in the contract. According to the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), the flexural strength should be no less than 12MPa, and high-quality GRC products can reach over 20MPa, which directly relates to the load-bearing capacity and safety of components; the apparent density should be controlled within 1800-2100kg/m³ to ensure the material's lightweight advantage and reduce building loads. In addition, parameters such as frost resistance, alkali resistance, and thermal conductivity should also be clearly marked according to the climate conditions of the project's location. For example, cold regions need to meet the requirement of no damage after 25 or more freeze-thaw cycles, while coastal regions need to focus on salt spray corrosion resistance. For more industry information: +WeChat qlfsbl123

Clearly defining quality standards is key to avoiding later disputes. The contract should cover specifications for the entire process of production, installation, and acceptance. The production stage should specify the glass fiber content (usually 4%-6%), cement type, and mix ratio. As a national high-tech enterprise, Qinglong Group uses specialized sulfoaluminate cement and alkali-resistant glass fiber to ensure product durability; surface treatment standards should specify flatness (tolerance ≤3mm/m), gloss, and texture effects. For special finishes such as stone imitation and metal imitation, physical samples should be attached as acceptance criteria. The installation stage should specify the material of the anchoring system (e.g., 304 stainless steel), spacing, and pull-out resistance requirements. Through BIM technology and 3D scanning positioning, Qinglong achieves "zero-error" joints, ensuring installation precision and structural safety.

For customized projects, the contract also needs to specify special technical requirements and a quality traceability mechanism. For complex-shaped GRC components such as double-curved surfaces and openwork reliefs, the contract should specify the minimum curvature radius (e.g., ≤300mm), the machining precision of irregular parts, and mold manufacturing standards. Backed by the technical strength of its provincial-level R&D center, Qinglong can achieve precise realization of any shape through parametric design. Meanwhile, a quality traceability system is indispensable: the manufacturer should be required to provide factory inspection reports for each batch of products, and key components can be embedded with RFID chips to record information throughout the entire process of production, transportation, and installation. As a company that has participated in formulating multiple industry standards, Qinglong strictly implements a lifetime quality responsibility system, providing long-term after-sales maintenance guarantees for projects.

Clearly specifying GRC technical parameters and quality standards in the contract is not only a constraint on material performance but also a commitment to project quality. As one of the larger domestic GRC manufacturers, Qinglong Group has always upheld the principle of "meticulousness and excellence," integrating 28 years of full-chain experience into every contract detail, providing clients with professional and customized solutions from detailed design to after-sales maintenance. Whether you are a real estate developer, an architectural designer, or a public project manager, only by choosing a GRC supplier with technical strength and industry reputation can you ensure the perfect realization of the project from drawings to completion and jointly create beautiful architecture. For more industry information: +WeChat qlfsbl123