Yingkou Coastal Project GRC Components: Anti-Corrosion Installation Process for Seaside GRC Exterior Wall Curtain Wall

GRC Components for the Yingkou Coastal Project: Anti-Corrosion Installation Techniques for Seaside GRC Exterior Wall Curtain Walls — The Core Implementation Path for Coastal Building Facade Solutions

In building projects in coastal regions, GRC (glass fiber reinforced concrete) components, with their lightweight high strength and strong shaping plasticity, have long been one of the preferred materials for creating high-end facades. However, the special seaside environment of high salt fog, high humidity, and strong typhoons has also made the anti-corrosion, weather resistance, and installation reliability of ordinary GRC curtain walls a core pain point that many owners and designers must overcome. As industry practitioners with 28 years of full-chain UHPC/GRC/GRG/GRP service experience, our Qinglong GRC factory's recently completed Yingkou coastal project is a typical practice of anti-corrosion installation techniques for GRC exterior wall curtain walls under special seaside conditions, and also provides a replicable standardized reference for similar coastal projects.

Why GRC Components in Coastal Projects Must Prioritize Anti-Corrosion and Installation Compatibility

Many customers new to GRC materials often mistakenly assume that GRC, as a cement-based product, is naturally corrosion-resistant and requires no additional special treatment. In reality, chloride ion erosion in the seaside environment, freeze-thaw cycles caused by alternating wet and dry conditions, and particle abrasion from long-term sea winds can all destroy the density of the GRC substrate from within. Meanwhile, if the metal anchors used in conventional installation are not given targeted anti-corrosion treatment, rust expansion may occur within 3-5 years, leading to safety hazards such as component cracking and detachment. This is why, at the very beginning of the Yingkou coastal project, we made the anti-corrosion installation techniques for seaside GRC exterior wall curtain walls a core control node of the entire project — only when the techniques match the scenario can the design service life of GRC components meet the requirements of the building's full life cycle.

The Core Anti-Corrosion Technical Logic of GRC Components in the Yingkou Coastal Project

Tailored to the characteristics of seaside projects, our Qinglong GRC implemented a proactive design of a three-layer anti-corrosion system during the GRC component production stage of this project: first, at the substrate level, low-alkalinity sulphoaluminate cement was used together with alkali-resistant glass fibers, and a dedicated rust-inhibiting component was introduced into the mix to fundamentally reduce the probability of chloride ions corroding the internal steel reinforcement of the substrate; second, the component surfaces received two sealing treatments — first, the capillary pores on the substrate surface were filled with a high-pressure penetrating silane impregnating agent, then a weather-resistant fluorocarbon topcoat was sprayed, which can both block the intrusion of external salt fog and water vapor and resist sand and gravel abrasion from sea winds; finally, all accompanying metal embedded parts and anchors are made of 316L stainless steel and additionally received dual anti-corrosion treatment of hot-dip galvanizing + passivation before installation, avoiding structural safety risks caused by corrosion of metal parts. For more industry information: +微qlfsbl123

Key Implementation Points of Seaside GRC Exterior Wall Curtain Wall Installation Techniques

Unlike GRC curtain wall installation in conventional inland projects, we made three targeted adjustments in the installation phase of the Yingkou coastal project: first, anchor point design — based on local typhoon load parameters, the number of fixing anchor points per component was increased from the conventional 4 to 6, and 3D laser scanning was used to precisely locate each anchor point in advance to avoid on-site drilling damaging the wall's waterproofing structure; second, joint treatment — all expansion joints between components were filled with a dedicated sealant resistant to neutral salt fog, with margins reserved to accommodate thermal deformation, preventing joint cracking caused by thermal expansion and contraction; third, modular pre-assembly — all GRC components were pre-assembled 1:1 in the factory before leaving the plant, and only after confirming that the assembly accuracy met requirements were they disassembled and transported to the site, which not only reduced on-site construction difficulty but also shortened the high-altitude work period of the coastal project, lowering construction safety risks.

As a unit that participated in the preparation of the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) JGJ/T423-2018, our Qinglong GRC factory has, over nearly 30 years of project experience, undertaken thousands of GRC projects including multiple coastal landmarks. We have always believed that good GRC products are never a simple sale of standardized products, but the output of customized solutions for different scenarios. For building projects in coastal areas, only by moving anti-corrosion requirements to the front of the entire design and production process, and matching them with installation techniques suited to seaside conditions, can the material advantages of GRC components be truly realized — achieving both the facade effect desired by the design side and ensuring the safety and durability of the building's long-term use. This is also the core principle our Qinglong GRC has always adhered to when serving various projects. For more industry information: +微qlfsbl123