Analysis of Mold Precision Requirements and Key Control Technologies for Producing UHPC Double-Curved Panels

The waterproofing performance of a building's exterior walls is an important indicator of construction quality. As a new type of architectural decorative material that combines aesthetics with functionality, the impermeability of GRC exterior walls directly affects a building's safety and durability. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will analyze the testing methods and key technologies for GRC exterior wall impermeability from a professional perspective, providing reliable solutions for designers and owners.

Core Methods for Testing GRC Exterior Wall Impermeability

Testing the impermeability of GRC exterior walls requires a scientific and rigorous process. Common testing methods fall into two categories: laboratory testing and on-site testing. For laboratory testing, Qinglong Group follows the methods specified in the Technical Standard for Glass Fibre Reinforced Cement (GRC) Building Applications (JGJ/T423-2018), conducting impermeability pressure tests on GRC specimens to simulate seepage under different water pressure conditions, ensuring that the material's inherent impermeability meets standards. On-site testing focuses on the overall waterproofing performance after actual installation, combining water spray tests with post-rain observations, with particular attention to joints, anchor points, and other leak-prone areas to verify the impermeability reliability of the GRC exterior wall system.

Key Technologies Affecting GRC Exterior Wall Impermeability

Material formula optimization is the foundation for improving GRC impermeability. Through 28 years of technical accumulation, Qinglong Group has developed specialized impermeability formulas, precisely controlling the ratio of glass fibres to the cement matrix as well as the selection of additives, giving GRC materials excellent density and crack resistance. In terms of production processes, automated spray moulding technology is adopted to ensure a uniform internal structure and reduce porosity; meanwhile, curing conditions are strictly controlled, with processes such as steam curing used to enhance the material's strength and impermeability.

Design development and installation techniques are equally critical to the impermeability of GRC exterior walls. Qinglong Group has a professional design development team that fully considers waterproofing requirements in joint detailing, applying multiple sealing measures such as drainage channels and high-performance sealants. During installation, 3D laser scanning positioning technology is used to ensure precise alignment of GRC components and minimize gaps; in addition, the anchoring system receives anti-corrosion treatment to prevent leakage risks caused by metal rust.

As a National High-Tech Enterprise and a participant in establishing GRC industry standards, Qinglong Group always puts product quality first. From material R&D to engineering applications, it strictly controls the impermeability of GRC exterior walls across the entire chain, and has successfully provided reliable GRC exterior wall systems for numerous landmark buildings. Looking ahead, Qinglong Group will continue to focus on the innovation and development of UHPC/GRC/GRG/GRP materials, guided by its mission of “Creating Beautiful Architecture,” providing customers with superior products and services to support the high-quality development of the construction industry.