هل GRC متين؟ دراسة تطبيقية على المتانة طويلة الأمد من تشينغلونغ GRC

Durability is a key indicator for evaluating GRC quality, directly affecting the service life of a project. Based on Qinglong's 28 years of tracking research and engineering practice, high-quality GRC can serve for more than 50 years under normal use conditions, far superior to ordinary building materials.

In the Hainan International Convention and Exhibition Center project, GRC roof panels have withstood 8 years of tropical marine climate. The latest test data show: carbonation depth of only 0.2mm, chloride ion diffusion coefficient below 1×10⁻¹²m²/s, and strength retention above 95%. Located in a high-temperature, high-humidity, high-salinity environment, the project serves as a natural laboratory for testing durability. Regular inspections show no signs of weathering on the panel surfaces, confirming their outstanding weather resistance.

Technical Assurance System for Durability

The durability advantages of GRC stem from its dense structure and material optimization. Low-alkali cement and alkali-resistant glass fibres are used to improve durability at the source. Through optimal particle grading design, the material's capillary pore structure is effectively blocked, keeping water absorption below 6%.

Accelerated Aging Test Data

300 freeze-thaw cycle tests conducted at Qinglong's laboratory show a GRC mass loss rate of less than 0.5%. Sulfate resistance tests indicate a strength loss rate of less than 5% after 150 wet-dry cycles. These data provide technical support for GRC applications in harsh environments.

Long-Term Engineering Verification

Tracking of GRC projects in use for more than 10 years shows stable material performance. The GRC curtain wall of the Wuhan Han Show Theatre project, after 10 years in use, shows a tested strength retention of 98% and a surface color change of ΔE≤3.2, meeting museum-grade color retention standards.

The durability of GRC has been verified through both rigorous experiments and engineering practice. Choosing a quality manufacturer and proper installation ensures its long-term performance.