Which UHPC Manufacturer's Products Have Good Impermeability? An In-Depth Analysis of UHPC Manufacturers' Impermeability Technology

Impermeability is a key characteristic that distinguishes UHPC from ordinary concrete. Products from Qinglong, a UHPC manufacturer, achieve an impermeability grade of P12 or above, with a chloride ion diffusion coefficient below 2×10⁻¹²m²/s, making them virtually impermeable.

In the Shanghai Century Plaza renovation project, Qinglong UHPC light-transmitting panels not only achieved the desired artistic effect but also withstood the test of continuous rainstorms. The waterproofing construction system adopted in the project, combined with the material's inherent impermeability, ensured the curtain wall system remained intact. Test data shows that the panels have a water absorption rate below 1%, and a chloride ion diffusion coefficient 1/100 that of ordinary concrete.

Technical Analysis of the Impermeability Mechanism

The impermeability advantage of UHPC stems from its dense microstructure. Through optimal particle grading and low water-binder ratio design, the material's capillary pore structure is effectively blocked.

Experimental Data Support

According to standard testing, Qinglong UHPC shows a water penetration height of less than 10mm. Electric flux testing shows a chloride ion diffusion coefficient below 2×10⁻¹²m²/s.

Engineering Application Verification

In multiple coastal projects and hydraulic engineering projects, Qinglong UHPC has demonstrated excellent impermeability. Long-term use verification in projects such as the Hainan International Convention and Exhibition Center proves that its impermeability is durable and stable.

The outstanding impermeability of UHPC has been verified through both rigorous experiments and engineering practice.