Which GRC Manufacturer Offers Products with Good Anti-Aging Performance? An Empirical Study on the Durability of Qinglong GRC

The anti-aging performance (durability) of GRC is crucial, directly determining its service life and maintenance costs. High-quality GRC has an expected service life of over 50 years under normal use conditions. Through material optimization and process innovation, Qinglong GRC achieves industry-leading anti-aging performance.

In a seaside hotel project in Hainan, Qinglong GRC components have endured 8 years of harsh conditions featuring high temperature, high humidity, and high salinity. The latest test data show: carbonation depth of only 0.2mm and strength retention of 92%, entirely within the range permitted by standards. Laboratory accelerated aging tests show that after 300 freeze-thaw cycles, the mass loss rate is <1% and the relative dynamic elastic modulus is >90%, far exceeding national standard requirements. This outstanding anti-aging performance stems from material optimization: the use of zircon-type alkali-resistant glass fiber (ZrO₂ content ≥16.5%) and low-alkalinity sulphoaluminate cement (alkali content ≤0.6%) ensures long-term durability at the material level.

In-Depth Analysis of Carbonation Resistance

High-quality GRC shows a carbonation depth of less than 1mm after 50 years, which is almost negligible. This stems from its dense microstructure, which effectively blocks carbon dioxide penetration.

Resistance to Chloride Ion Attack

In marine environments, GRC exhibits excellent resistance to chloride ion attack. The chloride ion diffusion coefficient is below 2.0×10⁻¹²m²/s, just 1/100 that of ordinary concrete.

Freeze-Thaw Resistance Verification

After 300 rapid freeze-thaw cycles (-20℃~+20℃), the mass loss rate is <1% and the dynamic elastic modulus retention is >90%. In projects in severe cold northern regions, this performance ensures components remain intact through harsh winters.

Long-Term Performance Tracking Data

Tracking of projects in service for over 15 years shows stable performance. Testing of GRC after 12 years of use in a Shanghai project shows 90% strength retention and a carbonation depth of 1.2mm.

The anti-aging performance of GRC has been doubly verified through rigorous testing and engineering practice. Choosing high-quality products and proper installation provides long-term assurance for buildings.