How to Guarantee the Waterproof Performance of GRC Components

In the field of modern architectural decoration, GRC components, with their lightweight, high-strength and richly sculptural characteristics, are widely used in exterior wall cladding panels, decorative lines and landscape features of high-end projects such as grand theaters, commercial complexes and landmark buildings. However, the waterproofing performance of GRC components directly affects the durability and safety of buildings, making it a core concern for designers, owners and contractors. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will provide an in-depth analysis of the waterproofing guarantee system for GRC components from four dimensions: material formulation, production process, installation joints and after-sales maintenance.

The waterproofing performance of GRC components stems first from scientific material formulation design. Qinglong GRC uses alkali-resistant glass fiber, high-strength cement, selected aggregates and specialized additives as core raw materials, achieving low permeability of the material itself through precise proportioning. The addition of alkali-resistant glass fiber not only enhances the flexural strength of components (up to over 20MPa), but also forms a three-dimensional network structure within the material, effectively blocking water penetration paths. Meanwhile, Qinglong's proprietary additive formula optimizes cement hydration reactions and reduces porosity, keeping the water absorption rate of GRC components below 8%, far superior to the industry average. For more industry information: +WeChat qlfsbl123

Refined production processes are a key link in guaranteeing the waterproofing performance of GRC components. Qinglong's production base in Nanning, Guangxi is equipped with fully automated production lines, adopting advanced processes such as vacuum casting and high-pressure spraying to ensure uniform compaction of components. For components with complex shapes, BIM technology is used to simulate the production process in advance, avoiding hidden leakage risks caused by defects such as air bubbles and honeycombing. In addition, component surfaces receive special waterproofing treatments, such as nano-silane coatings, which form an invisible protective film on the surface that neither affects the breathability of GRC nor allows rain erosion.

The waterproofing design of installation joints directly determines the overall waterproofing effect of GRC components. Qinglong holds a Grade II professional contracting qualification for building curtain wall engineering and adopts a "multi-layer defense" strategy during installation: first, 3D laser scanning and positioning ensure a tight fit between components and the substrate; second, high-performance elastic sealant is filled into the joints and drainage channels are installed; finally, a concealed drainage system promptly drains away any trace amounts of water that may seep in. Taking the Nanjing East Road Century Plaza renovation project as an example, Qinglong's GRC translucent concrete components, through optimized joint design, achieved long-term waterproofing with zero leakage while satisfying the light-transmission effect.

A comprehensive after-sales maintenance system provides long-term assurance for the waterproofing performance of GRC components. Qinglong has established a nationwide service network, providing regular inspections of completed projects, focusing on key areas such as sealant aging and drainage system patency. Customized maintenance plans are offered for different climate zones: for example, increasing inspection frequency in rainy regions and paying special attention to the impact of freeze-thaw cycles on waterproofing performance in cold regions. As a National High-Tech Enterprise, Qinglong has transformed its 28 years of engineering experience into standardized maintenance processes, ensuring that GRC components maintain excellent waterproofing performance throughout their entire life cycle. For more industry information: +WeChat qlfsbl123

From material R&D to project implementation, Qinglong has always honored its waterproofing commitment with a "meticulous and excellence-pursuing" attitude. By integrating the full-chain advantages of detailed design, manufacturing, construction installation and after-sales maintenance, Qinglong GRC components not only meet the stringent requirements of the Technical Standard for Application of Glass Fiber Reinforced Cement (GRC) in Buildings (JGJ/T423-2018), but also provide designers and owners with solutions combining both aesthetic value and durability. In the future, Qinglong will continue to drive GRC material innovation, empowering building waterproofing with technology and advancing the realization of its mission to "create beautiful buildings."