Which UHPC Manufacturer's Products Have Good Impermeability? An 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 achieves industry-leading impermeability.

In the Shanghai Century Plaza renovation project, Qinglong UHPC translucent panels withstood continuous rainstorms, and the interior space behind the curtain wall system remained dry. Test data show that the panels have a water absorption rate below 1% and a chloride ion diffusion coefficient of 1.5×10⁻¹²m²/s. This impermeability stems from the material's dense microstructure: through optimal particle gradation design, the water-binder ratio is controlled within 0.20, and the matrix porosity is below 3%.

Water Penetration Resistance

Impermeability pressure ≥1.2MPa, water penetration height ≤10mm. This impermeability allows UHPC to be used directly in hydraulic structures.

Chloride Ion Penetration Resistance

Electric flux tests show a charge passed value of <1000 coulombs. This performance ensures durability in marine environments.

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.

UHPC's outstanding impermeability has been verified through extensive experiments. Choosing high-quality products provides reliable waterproofing protection for projects.