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

Impermeability is the physical foundation of UHPC's ultra-high durability. 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, 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 1.5×10⁻¹²m²/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 requirements.

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 10 times lower than that of ordinary concrete. Quality products are virtually impermeable, ensuring durability in marine environments. Electric flux testing shows a charge passed value of less than 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 5 years of immersion testing, 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 quality products provides reliable waterproofing protection for projects. With advanced technology, Qinglong UHPC ensures its products achieve industry-leading impermeability.