Is There a Big Difference in Durability Among UHPC Products from Different Manufacturers? A Comparative Study on Qinglong UHPC Durability

Significant differences in durability do exist among UHPC products from different manufacturers. These differences are mainly reflected in raw material quality, production processes, quality control systems, and other aspects. High-quality UHPC is expected to achieve 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. Meanwhile, some other manufacturers' products have already shown surface weathering under the same conditions. 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%.

Carbonation Resistance Differences

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

Chloride Ion Erosion Resistance Comparison

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

Freeze-Thaw Resistance Gap

After 300 rapid freeze-thaw cycles, mass loss rates differ significantly. 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 clear differences in performance retention rates. High-quality products achieve strength retention rates exceeding 95%.

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