Discussion and Practice of Waterproofing Treatment Solutions for UHPC Panels on Roofs

In modern architectural design, UHPC panels are becoming the ideal choice for roofing systems thanks to their ultra-high strength, durability, and design freedom. However, as the first line of defense in building waterproofing, the professionalism of roof waterproofing treatment directly determines a project's service life and safety performance. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group has developed a systematic UHPC roof waterproofing solution through full-chain technical accumulation, balancing structural safety with waterproofing effectiveness.

Analysis of Technical Pain Points and Material Properties in UHPC Roof Waterproofing

UHPC (Ultra-High Performance Concrete) panels have a density of 2400-2500 kg/m³ and a flexural strength exceeding 20 MPa, yet their inherent porosity and panel joints remain weak points for waterproofing. Traditional waterproofing processes often face three major challenges: first, uneven base surfaces after panel installation cause blistering and cracking of the waterproofing layer; second, insufficient compatibility between rigid materials and flexible waterproofing; third, joint leakage caused by thermal deformation. Through practice on 1,000+ projects, Qinglong's technical team found that UHPC roof waterproofing requires a systematic, trinity approach of "materials + construction + workmanship" rather than relying solely on waterproofing materials.

Core Technical Pathway of Qinglong's Full-Chain Waterproofing Solution

Based on the technical accumulation of its national-level R&D center, Qinglong has built a closed-loop system from detailed design to after-sales maintenance. In the design phase, BIM technology is used to simulate thermal stress and optimize panel joint width and drainage slope; in production, steam curing enhances UHPC density, keeping water absorption below 3%; in construction, an innovative triple defense of "drainage + barrier + sealing" is applied: the drainage layer adopts a honeycomb drainage structure, the barrier layer uses a reactive waterproof coating independently developed by Qinglong (with weather resistance of over 20 years), and the sealing layer uses elastic polyurethane joint sealant, achieving a temperature adaptation range of -40°C to 80°C. After a landmark project applied this solution, it withstood three rainy seasons with zero leakage.

Cross-Material Synergy: Composite Waterproofing Practice with UHPC and GRC/GRP

For large-span roofs, Qinglong innovatively proposed a "UHPC+GRC/GRP" composite system: UHPC serves as the load-bearing base layer, GRC (glass fiber reinforced concrete) as the transitional buffer layer, and GRP (glass reinforced thermosetting plastic) as the surface waterproofing layer. This combination leverages UHPC's structural advantages while utilizing GRP's corrosion resistance and GRC's design adaptability. In an airport project in Southeast Asia, this system successfully withstood heavy rainfall during typhoon season and reduced total costs by 30% compared to traditional solutions.

Long-Term Maintenance: Service Upgrade from "Passive Repair" to "Active Protection"

As a national "Specialized, Refined, Distinctive, and Innovative" enterprise, Qinglong extends its waterproofing warranty to 15 years and establishes digital maintenance records. Through regular drone inspections and infrared thermal imaging tests, hidden leakage risks are identified in advance. For existing projects, Qinglong provides UHPC panel surface silane impregnation treatment services, which can extend waterproofing life by 5-8 years. This "full life-cycle protection" model has become the preferred cooperation standard for top-100 developers such as Poly and Vanke.

Roof waterproofing is the lifeline of building safety, and the application of UHPC materials brings new possibilities to waterproofing systems. With 28 years of technical accumulation as its foundation, Qinglong Group deeply integrates material innovation with engineering practice, not only solving today's waterproofing challenges but also building long-term protection mechanisms through full-chain services. In the future, with the implementation of the industry standard "General Technical Conditions for Ultra-High Performance Concrete (UHPC) Non-Load-Bearing Components," Qinglong will continue to advance the standardization and intelligentization of UHPC waterproofing technology, safeguarding building safety.