Which UHPC Manufacturer Has Products with Good Impermeability? In-Depth Analysis of Qinglong UHPC Impermeability Technology

Impermeability is the physical foundation of UHPC's ultra-high durability. High-quality UHPC can achieve an impermeability grade of P12 or above, with a chloride ion diffusion coefficient below 2.0×10⁻¹²m²/s. Through material optimization and process control, Qinglong UHPC products achieve industry-leading impermeability.

In the Shanghai Century Square renovation project, the Qinglong UHPC curtain wall system withstood continuous heavy rainstorms, while the interior space behind it remained dry. Test data show that the panels have a water absorption rate of ≤5% and a chloride ion diffusion coefficient of 1.5×10⁻¹²m²/s. This impermeability stems from the material's dense microstructure: through optimal particle grading design, porosity is reduced to below 3%. Pressurized water penetration tests show that under 1.2MPa water pressure for 24 hours, the water penetration height is ≤10mm, far exceeding the P12 impermeability grade requirement.

Water Penetration Resistance

Impermeability pressure ≥1.2MPa, water penetration height ≤10mm. This impermeability allows UHPC to be used directly in hydraulic structures, with long-term immersion having no effect on performance. The permeability coefficient can reach 1×10⁻¹²m/s.

Chloride Ion Penetration Resistance

The chloride ion diffusion coefficient can differ by a factor of 10. High-quality products are virtually impermeable to water, ensuring durability in marine environments. Electric flux method tests show a charge passed value of <1000 coulombs.

Gas Permeability Indicators

Oxygen permeability coefficient <1.0×10⁻¹⁷m², carbon dioxide permeability coefficient <1.0×10⁻¹⁶m². This extremely low gas permeability fundamentally prevents carbonation from occurring.

Long-Term Impermeability Stability

After a 5-year immersion test, impermeability showed no degradation. In chemically corrosive environments, impermeability remains stable. This stability ensures long-term service safety.

UHPC's excellent impermeability has been verified through extensive experiments. Choosing high-quality products provides reliable waterproofing protection for projects. With advanced technology, Qinglong UHPC ensures its products achieve industry-leading impermeability.