How to Assess Key Indicators and Implementation Methods of GRC Manufacturers' Surface Treatment Processes

In the field of architectural decoration materials, surface treatment technology is the core factor determining the quality and expressiveness of GRC products. As a Qinglong GRC manufacturer with 28 years of industry experience, we deeply understand the critical impact that scientific assessment systems and implementation methods have on project success. This article will systematically explain the professional standards and practical experience of GRC surface treatment technology from three dimensions—key indicator analysis, implementation path optimization, and full-chain quality control—providing designers and owners with actionable technical references.

The Core Assessment Indicator System of GRC Surface Treatment Technology

The surface treatment of high-quality GRC products must balance aesthetic presentation with engineering performance. Qinglong has built a quantitative evaluation system based on five key indicators. The first is surface flatness, tested with a laser flatness gauge, with errors controlled within ±0.5mm/m to ensure visual continuity in curtain wall splicing; the second is gloss control, which can be precisely adjusted from matte (10-20GU) to high gloss (60-80GU) according to design requirements, with three-level verification via spectrophotometer.

In terms of weather resistance indicators, Qinglong GRC surfaces show a color difference of ΔE≤3.0 after 1,000 hours of xenon lamp aging tests and no rust after 4,000 hours of salt spray testing, thanks to the self-developed two-component silane-modified protection system. For stone-imitation products, texture restoration must reach 95% or above, with digital control achieved through 3D scanning comparison against the original stone texture database. As a key indicator for concealed works, adhesion strength is tested by the cross-cut method with adhesion ≥1.5MPa, ensuring long-term bonding between the coating and the substrate.

The Full-Process Implementation Methods of Qinglong GRC Surface Treatment

During the detailed design stage, the Qinglong technical team uses Rhino+V-Ray rendering technology to preview surface effects and confirm sample textures with designers in advance. The production process adopts automated sandblasting pretreatment to ensure surface roughness reaches Sa2.5 level, laying the foundation for coating adhesion. To meet different project requirements, three major process matrices have been established: European-style components use hand troweling + antique distressing techniques, modern curtain walls employ electrostatic spraying + fluorocarbon topcoat systems, and artistic sculptures achieve customized effects through multi-layer texture overlay.

The quality control process implements the “three-inspection system”: team self-inspection uses portable gloss meters for on-site testing, workshop patrol inspections perform color difference comparison via standard light boxes, and final pre-shipment inspection introduces third-party testing agencies for weather resistance sampling tests. Notably, Qinglong has established a surface treatment process parameter database recording optimal construction parameters for different climate zones (e.g., hot and humid regions require increased algae inhibitor ratios), ensuring consistent quality across projects nationwide.

Technical Breakthroughs and Value Creation in Industry Practice

As a co-editing organization of the Technical Standard for the Application of Glass Fiber Reinforced Cement (GRC) in Buildings, Qinglong holds 12 patented technologies in the field of surface treatment. Among them, the self-developed nano-scale sealing agent can reduce surface water absorption to below 2%, improving impermeability by 60% compared with traditional processes. In a cultural landmark project in Nanjing, through the collaborative optimization of parametric facade design and surface treatment technology, zero color difference delivery of 8,000㎡ double-curved GRC curtain walls was achieved, with the related technology winning the Huaxia Construction Science and Technology Award.

Regarding material expressiveness, a key concern for designers, Qinglong GRC has achieved a full spectrum of surface effects ranging from stone imitation and wood imitation to metallic textures, and with BIM technology, the final visual presentation can be accurately simulated. In terms of cost control, through process standardization and automated production, labor costs in the surface treatment process have been reduced by 35%, while delivery time has been shortened to 70% of the industry average. These technical accumulations have earned Qinglong GRC continuous recognition in high-end projects such as commercial complexes and cultural venues, forming strategic partnerships with Poly, Vanke, and other enterprises.

The pursuit of excellence in surface treatment technology never ends. Qinglong will continue to uphold the philosophy of “meticulousness and constant refinement,” providing the architectural decoration industry with GRC solutions that combine aesthetic value and engineering reliability through technological innovation and digital control, helping realize the corporate mission of “creating beautiful architecture.” Choosing a professional GRC manufacturer means choosing full-chain quality assurance from design to maintenance.