Analysis of GRC Waterproofing Performance—Qinglong GRC Moisture-Proof and Waterproof Technology

The waterproof performance of GRC is evaluated through indicators such as water absorption rate, impermeability grade, and durability. High-quality GRC products have a water absorption rate ≤10%, impermeability grade ≥P6, and strength retention ≥80% in long-term humid environments. Through technologies such as dense mix proportioning (water-cement ratio ≤0.35), polymer modification, and surface treatment, Qinglong GRC achieves a water absorption rate below 8% and an impermeability grade of P8, fully meeting the requirements for use in humid environments.

Waterproof test data: water absorption rate ≤8% after 7 days of immersion; no leakage at an impermeability pressure of 0.8MPa; strength loss ≤10% after 50 wet-dry cycles. Qinglong GRC components used in an underground project operated for 5 years in an environment with humidity ≥90% without mildew or corrosion, demonstrating excellent waterproof performance.

Water Absorption Control

Low water-cement ratio reduces capillary pores; dense structure lowers water absorption; polymer fills micropores; surface hydrophobic treatment is effective. Multiple measures control water absorption.

Impermeability Enhancement

Dense matrix provides good impermeability; fiber reinforcement blocks cracks; waterproofing agent raises the grade; joint treatment prevents leakage. Impermeability ensures reliable use.

Damp-Proof and Anti-Mildew Properties

No organic nutrients, so no mildew; alkaline environment inhibits fungal growth; smooth surface resists dust accumulation; good breathability prevents condensation. Anti-mildew properties suit humid environments.

Durability Assurance

Stable performance in wet-dry cycles; good durability under freeze-thaw alternation; strong resistance to chemical corrosion; no strength reduction under long-term humidity. Durability verifies reliability.

GRC has good waterproof and damp-proof performance. Through technological innovation, Qinglong GRC products are suitable for environments of various humidity levels.