Do UHPC Products from Different Manufacturers Differ Greatly in Durability? A Comparative Study of Qinglong UHPC Durability

There are indeed significant differences in durability between 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 has an expected 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 already showed surface weathering in the same environment. This difference can also be verified through accelerated aging tests: after 300 freeze-thaw cycles, high-quality products show a mass loss rate <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 over 50 years. This results from a dense microstructure that effectively blocks carbon dioxide penetration.

Chloride Ion Resistance Comparison

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

Freeze-Thaw Resistance Gap

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

Long-Term Performance Tracking Data

Tracking of projects in use for over 10 years shows clear differences in performance retention rates. High-quality products have a strength retention rate exceeding 95%.

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