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

Impermeability is the physical foundation of UHPC's ultra-high durability. High-quality UHPC can reach an impermeability grade above P12, 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, while the interior space behind the panels remained dry. Test data show 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 gradation design, porosity is reduced to below 3%. Pressurized water penetration tests show that under 1.2MPa water pressure for 24 hours, the water penetration depth is ≤10mm, far exceeding the P12 impermeability grade requirement.

Water Penetration Resistance

Impermeability pressure ≥1.2MPa, water penetration depth ≤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 be up to 10 times lower than that of ordinary concrete. High-quality products are virtually impermeable, 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 shows no degradation. In chemically corrosive environments, impermeability remains stable. This stability ensures long-term safety in use.

UHPC's outstanding 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.