Is UHPC Impermeable? Dense Structure and Impermeability Assurance

UHPC offers exceptional impermeability, with an impermeability grade of up to P20 or above (penetration height ≤5mm), far exceeding ordinary concrete (P6-P8). This stems from its ultra-high density and fiber reinforcement system. Projects such as Qinglong's Shanghai New World Plaza and Shenzhen Yirui Biotechnology Building have achieved "watertight" performance, with a 100% impermeability pass rate.

I. Core Impermeability Indicators and Advantages

Its impermeability far surpasses traditional materials. Impermeability grade: ≥P20, with some premium products reaching P30; no water seepage at 28 days under 1.2MPa water pressure; Penetration height: ≤5mm, while ordinary concrete's penetration height is ≥30mm; Application advantages: no additional waterproof coating required, directly usable in water-contact and high-humidity environments; Qinglong UHPC components reduce waterproofing costs by 30%.

II. Core Technologies Ensuring Impermeability

Three technologies build an anti-seepage barrier. Ultra-high density: low water-binder ratio (≤0.35) + optimized aggregate gradation, with quartz sand filling cement voids; Qinglong UHPC density ≥2.4g/cm³; Fiber bridging effect: steel fibers bond tightly with the cement matrix, sealing micro-pores; Qinglong's fiber content is 2-3%, achieving a pore sealing rate of 98%; Process control: high-pressure vibration (pressure ≥0.6MPa) + vacuum degassing to remove internal air bubbles; Qinglong's process keeps air bubble content ≤1%; Surface treatment: light polishing after forming to remove surface pores; Qinglong's surface roughness Ra≤1.6μm, reducing seepage channels.

III. Qinglong Project Practice and Application Scenarios

Real-world projects verify impermeability reliability. Shanghai New World Plaza: UHPC wood-effect translucent panels, long-term exposure to outdoor rain environments with no seepage or dampness; Shenzhen Yirui Biotechnology Building: UHPC exterior wall panels, used for 5 years in a high-humidity laboratory environment with no mildew or seepage; Application scenarios: building exteriors, hydraulic components, underground engineering, and bathroom decoration; Qinglong's impermeable UHPC fits all water-contact scenarios; Technical advantages: holds 3 impermeability-related patents and participated in formulating the "UHPC Impermeability Test Method"; Commitment guarantee: free waterproofing solutions if impermeability falls short, and free repairs for any seepage during the warranty period.