How Good Is the Impermeability of UHPC Manufacturer Products? An In-Depth Analysis of Qinglong UHPC Impermeability Technology

Impermeability is the physical foundation of UHPC's ultra-high durability. Premium 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, the Qinglong UHPC curtain wall system withstood continuous rainstorms, with the interior space behind it remaining dry. Test data show that the panels have a water absorption rate ≤5% and a chloride ion diffusion coefficient of 1.2×10⁻¹²m²/s. This impermeability stems from the material's dense microstructure: through optimal particle gradation design, porosity is reduced to below 3%. Pressurized water penetration tests show a 24-hour water penetration height ≤10mm under 1.2MPa water pressure, 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 causing no impact on performance.

Chloride Ion Penetration Resistance

Chloride ion diffusion coefficient ≤2.0×10⁻¹²m²/s, with a charge passed value <1000 coulombs under the electric flux method. This performance ensures durability in marine environments, making it particularly suitable for sea-crossing projects.

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, ensuring long-term durability.

Chemical Corrosion Resistance

After 180 days of immersion in a 5% sodium sulfate solution, the strength loss rate is <5%. With a sulfate resistance grade of KS150, it is suitable for harsh chemical environments. This corrosion resistance expands the range of applications.

UHPC's outstanding impermeability has been verified through extensive experiments. Choosing premium products provides reliable waterproofing protection for projects. Qinglong UHPC offers excellent impermeability and is suitable for use in demanding environments.