Analysis of Steam Curing Techniques and Key Points for GRC Components in Low-Temperature Environments

In the field of architectural decoration, GRC components are widely used in various high-end buildings thanks to their advantages such as light weight, high strength, and rich styling. However, in low-temperature environments, the production quality of GRC components faces severe challenges. As an industry leader with 28 years of full-chain experience in detailed design, manufacturing, construction and installation, and after-sales maintenance of UHPC/GRC/GRG/GRP materials, Qinglong Group deeply understands the impact of low temperatures on GRC component performance. This article provides an in-depth analysis of steam curing technology and key points for GRC components in low-temperature environments, offering professional solutions for the industry.

In low-temperature environments, the hydration reaction of GRC components slows down, strength development is hindered, and problems such as cracking and insufficient strength are likely to occur. Steam curing technology controls temperature and humidity to create a suitable curing environment for GRC components, effectively solving the problems caused by low temperatures. Qinglong Group, as a new-type decorative building materials enterprise and a custom manufacturer of UHPC/GRC/GRG/GRP products, has accumulated rich experience in steam curing technology. Its subsidiary, Guangdong Qinglong Construction Engineering Co., Ltd., founded in 1997, is a national high-tech enterprise integrating detailed design, manufacturing, construction and installation, and after-sales maintenance, demonstrating outstanding strength in low-temperature GRC component production.

**Core Technical Points of Steam Curing for GRC Components in Low-Temperature Environments**

The key to steam curing lies in properly controlling the temperature, humidity, and duration of each curing stage. Through years of practice, Qinglong Group has summarized a "three-stage temperature control method": in the heating stage, the heating rate is strictly controlled to not exceed 15℃/h to prevent cracks caused by excessive temperature differences between the interior and exterior of components; in the constant temperature stage, the temperature is controlled at 50-60℃ and humidity is kept above 90% according to component thickness and strength requirements, ensuring full cement hydration; in the cooling stage, the cooling rate is likewise controlled to prevent sudden temperature drops from damaging components. This technical solution has been widely applied in the production of 600,000 square meters of GRC components at Qinglong's Guangxi Nanning production base, ensuring product quality stability in low-temperature environments. For more industry information: +WeChat qlfsbl123

**Optimization and Innovation of Steam Curing Equipment and Processes**

Advanced curing equipment is the foundation for implementing the technology. Qinglong Group has introduced an intelligent steam curing system that uses a PLC control system to precisely adjust curing parameters, achieving fully automated monitoring throughout the process. Meanwhile, for different types of GRC components, such as exterior wall cladding panels for theaters and convention centers, and irregular decorative lines for commercial complexes, the company has developed customized curing fixtures to ensure even heating across all parts of the components. In addition, Qinglong Group applies BIM technology to simulate the curing process, anticipating potential problems in advance and optimizing curing plans. This innovation has given the company an important position in industry standard-setting, such as its participation in formulating the "Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC)" (JGJ/T423-2018).

**Quality Control and Testing System**

To ensure the quality of GRC components steam-cured in low-temperature conditions, Qinglong Group has established a strict quality control system. High standards are enforced throughout, from incoming inspection of raw materials, to monitoring of every production step, to performance testing after curing. After curing is complete, key indicators such as flexural strength, elastic modulus, and water absorption of the components are comprehensively tested to ensure products comply with national and industry standards. As a national "Specialized, Refined, Distinctive, and Innovative" enterprise and a provincial-level R&D center, Qinglong Group possesses comprehensive testing capabilities and a professional technical team, providing strong assurance for the quality of low-temperature GRC components.

**Project Cases and Practical Experience**

Qinglong Group's low-temperature GRC component steam curing technology has been successfully applied in numerous projects. For example, in a large cultural center project in northern China, where winter construction temperatures dropped to -5℃, by adopting Qinglong Group's steam curing technology, the GRC exterior wall cladding panels were not only delivered on time, but all performance indicators exceeded the design requirements, earning high recognition from the client. In addition, Qinglong Group's products are exported to overseas markets such as Malaysia and Vietnam, demonstrating excellent performance under different climatic conditions, thanks to its mature steam curing technology and rich practical experience. For more industry information: +WeChat qlfsbl123

Steam curing of GRC components in low-temperature environments is a systematic project that requires professional technology, advanced equipment, and strict management. As an influential enterprise in the UHPC/GRC/GRG/GRP architectural decoration materials segment, Qinglong Group has always adhered to the philosophy of "professional innovation and environmental protection," continuously optimizing its steam curing technology to provide customers with high-quality GRC components. In the future, Qinglong Group will continue to focus on the development of UHPC/GRC/GRG/GRP materials, integrate resources, and grow bigger and stronger, striving to achieve the vision of "becoming an outstanding world-leading UHPC/GRC/GRG/GRP manufacturing enterprise" and contributing to the creation of beautiful architecture.