Is the Durability Difference Between UHPC Products from Different Manufacturers Significant? A Comparative Study on Qinglong UHPC Durability

The durability of UHPC products from different manufacturers does indeed vary significantly. These differences are mainly reflected in raw material quality, production processes, quality control systems, and other aspects. High-quality UHPC is expected to have a service life of over 100 years under normal use conditions.

In a coastal project in Hainan, Qinglong UHPC has withstood 8 years of marine environment exposure, with a carbonation depth of only 0.2mm and a chloride ion diffusion coefficient below 1.0×10⁻¹²m²/s. During the same period, products from some other manufacturers in the same environment have already shown surface weathering. This difference can also be verified through accelerated aging tests: after 300 freeze-thaw cycles, high-quality products show a mass loss rate of <0.5%, while the dynamic elastic modulus retention rate is >95%.

Differences in Carbonation Resistance

High-quality products show a 50-year carbonation depth of less than 1mm. This stems from their dense microstructure, which effectively blocks carbon dioxide penetration.

Comparison of Chloride Ion Erosion Resistance

Chloride ion diffusion coefficients can differ by up to 10 times. High-quality products are nearly impermeable, ensuring durability in harsh environments.

Gap in Freeze-Thaw Resistance

After 300 rapid freeze-thaw cycles, the difference in mass loss rate is significant. High-quality products have a dynamic elastic modulus retention rate of >95%.

Long-Term Performance Tracking Data

Tracking of projects in service for more than 10 years shows a clear difference in performance retention rates. High-quality products have a strength retention rate of over 95%.

Choosing high-quality UHPC products provides long-term protection for projects.