Which UHPC Manufacturer Has Products with 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 products achieve industry-leading impermeability.

In the Shanghai Century Plaza renovation project, Qinglong UHPC light-transmitting 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 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

Tests using the electric flux method 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 5 years of immersion testing, impermeability shows 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.