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

Durability is a key indicator for evaluating GRC quality and is directly related to the service life of a project. Based on Qinglong's 28 years of tracking research, high-quality GRC can achieve a service life of over 50 years under normal use conditions, and its exceptional durability has been verified through extensive engineering practice.

In the Hainan International Convention and Exhibition Center project, GRC roof panels have withstood 8 years of tropical marine climate. The latest testing data shows: a carbonation depth of only 0.2mm, a chloride ion diffusion coefficient below 1×10⁻¹²m²/s, and a strength retention rate above 95%. Located in an environment of high temperature, high humidity, and high salinity, the project serves as a natural laboratory for testing durability. Regular inspections show no signs of weathering on the panel surfaces and an intact internal structure, confirming its exceptional durability. Notably, in the Shenzhen Pingshan High-tech Zone Comprehensive Service Center project, GRC curtain wall panels after 5 years of use were tested and showed a carbonation depth of less than 0.5mm with a stable chloride ion diffusion coefficient—this long-term performance provides reliable assurance for projects.

In-Depth Study of Carbonation Resistance

The dense structure of GRC effectively blocks carbon dioxide penetration. Accelerated carbonation tests show a carbonation depth of less than 1mm over 50 years. Qinglong uses low-alkali cement and active mineral admixtures such as silica fume to further optimize the pore structure, reducing the carbonation rate by 40%. This property was verified in the Wuhan Han Show Theater project, where GRC components after 10 years of use showed a carbonation depth of only 0.3mm.

Empirical Analysis of Freeze-Thaw Resistance

After 300 freeze-thaw cycles, the mass loss rate is <0.5% and the relative dynamic elastic modulus is >95%. In projects in severely cold northern regions, GRC materials withstood low temperatures of -30°C without damage. Qinglong significantly enhances frost resistance through the dual measures of air-entraining agents and fiber reinforcement.

Long-Term Tracking of Weather Resistance

In regions with intense ultraviolet radiation, GRC color retention shows ΔE≤3.2 within 5 years. Through matrix dyeing and surface protection treatment, Qinglong GRC products achieve museum-grade color retention standards. In multiple projects in Guangzhou, white GRC panels have remained as white as new after 5 years of use.

Durability Technical Assurance System

From raw material selection to production process control, Qinglong has established 58 quality control points. Accelerated aging tests are adopted to predict long-term performance, providing a basis for engineering design. This systematic assurance brings product durability to an industry-leading level.

The durability of GRC has been verified through both rigorous experiments and engineering practice. Selecting high-quality GRC products and installing them correctly ensures their long-term performance. With its comprehensive technical system, Qinglong GRC holds distinct advantages in durability.