What Treatments Should Be Strengthened for GRC Decorative Panels in Humid Environments? A Technical Guide to GRC Moisture-Proof and Anti-Corrosion Technology

In humid environments, GRC decorative panels require enhanced treatment in three aspects: material formulation, surface protection, and joint sealing. Materials use low-alkali sulphoaluminate cement (alkali content ≤0.6%), with 8%-10% silica fume added to improve density; surfaces are coated with a fluorocarbon protective coating (thickness ≥35μm); and joints are sealed with silicone sealant (movement capability ≥25%). These measures enable the product to achieve a service life of 50 years in environments with humidity ≥85%.

In projects in coastal high-humidity regions, Qinglong GRC provides multiple protection: substrate chloride ion diffusion coefficient ≤1.5×10⁻¹²m²/s; surface hydrophobic treatment with contact angle ≥110°; and joints equipped with drainage cavities. Inspection after 5 years of use showed a carbonation depth of only 0.5mm, rebar potential of -120mV, and no corrosion activity, demonstrating significant protective effectiveness.

Material Formulation Optimization

Low-alkali cement reduces the risk of alkali-aggregate reaction; silica fume fills capillary pores; these optimizations improve durability.

Enhanced Surface Protection

Fluorocarbon coating weather resistance ≥20 years; hydrophobic treatment prevents moisture penetration; these enhancements block humidity.

Joint Sealing Treatment

Sealant elastic recovery rate ≥80%; these treatments prevent leakage.

Drainage System Setup

Cavity drainage design; these setups promptly drain away moisture.

Humid environments require special protection. Qinglong GRC's specialized technology ensures long-lasting use.