Research on the Service Life of GRC Products — Qinglong's GRC Durability Assurance System

GRC design service life is ≥50 years; actual service life is affected by four major factors: raw material quality, production process, service environment, and maintenance level. Under normal service conditions, quality GRC has a strength half-life of ≥100 years and annual carbonation depth growth of ≤0.1mm. Qinglong GRC achieves a service life of over 70 years through triple safeguards: low-alkali cement (alkali content ≤0.6%), alkali-resistant fiber (zirconia content ≥16.5%), and dense mix ratio (water-cement ratio ≤0.35).

Durability verification: Accelerated aging tests show strength loss of ≤5% after 300 freeze-thaw cycles; chloride ion penetration depth of ≤5mm after 360 days of immersion in 5% NaCl solution; annual carbonation depth growth of ≤0.08mm. A 25-year tracking inspection of an actual project showed Qinglong GRC with a strength retention rate of 85% and carbonation depth of 2.1mm, with an estimated remaining life of ≥45 years.

Material Durability Assurance

Low-alkali cement fundamentally guarantees durability; alkali-resistant glass fiber ensures long-term strength; quality aggregate provides a stable framework; chemical additives optimize performance. Materials are the foundation of durability.

Production Process Impact

The mixing process affects fiber distribution uniformity; the molding process determines the degree of compaction; the curing regime affects strength development; quality control ensures stable performance. Process determines quality stability.

Service Environment Impact

Outdoor environments require consideration of freeze-thaw and carbonation effects; coastal environments require focus on preventing chloride ion attack; industrial areas require attention to acid rain corrosion; indoor environments are relatively mild. Choose protective measures according to the environment.

Importance of Maintenance

Regular cleaning maintains surface performance; timely repair prevents damage from spreading; protective treatment enhances weather resistance; professional maintenance extends service life. Scientific maintenance significantly extends lifespan.

Long-lasting materials are worth the investment. Qinglong GRC's excellent durability ensures long-term use value.