What Is the Full Name of UHPC and What Are the Key Indicators of Its Core Definition? Analysis and Detailed Explanation of Key Indicators

In modern building curtain wall technology, GRC (Glass Fibre Reinforced Concrete) has become the ideal choice for the facades of many high-end buildings thanks to its advantages of light weight, high strength, and flexible shaping. However, the waterproofing performance of a curtain wall directly affects the durability and safety of a building. As an industry leader with 28 years of experience in GRC material detailed design and construction, Qinglong Group deeply understands the central role of waterproofing in GRC curtain wall systems. This article systematically analyzes the mainstream methods and key construction points of GRC curtain wall waterproofing, providing designers and project owners with a technical guide that combines professionalism and practicality.

The Three-Layer Protection Logic of the GRC Curtain Wall Waterproofing System

Waterproofing of GRC curtain walls requires a systematic approach of "prevention first, multiple lines of defense," centered on material properties, structural design, and construction techniques to form triple protection. In benchmark projects such as the Nanjing East Road Century Plaza renovation, Qinglong innovatively combined UHPC (Ultra-High Performance Concrete) with GRC, strengthening the first line of defense through the density of the materials themselves. Data shows that the water absorption rate of high-quality GRC components can be controlled below 6%; combined with dedicated sealant layers and drainage systems, this effectively meets the waterproofing challenges of regions with annual rainfall exceeding 1500mm.

Analysis of Mainstream Waterproofing Methods and Technical Parameters

Currently, mainstream GRC curtain wall waterproofing methods fall into three categories: structural waterproofing, material waterproofing, and joint waterproofing. Structural waterproofing forms a physical barrier through staggered overlapping of GRC panels; Qinglong's "tongue-and-groove jointing + concealed drainage channel" design increases vertical joint drainage capacity by 40%. Material waterproofing relies on dedicated waterproof coatings; Qinglong's independently developed GRC-specific waterproof coating has been tested to deliver weather resistance of more than 15 years. Joint waterproofing is the top priority: in the Dongguan Women and Children's Activity Center project, Qinglong innovatively adopted "double sealing + cavity pressure relief" technology, keeping the joint leakage rate below 0.1‰.

Key Points of Quality Control Throughout the Construction Process

Refined management of waterproofing construction directly determines the final result. In the detailed design stage, Qinglong uses BIM technology for pre-assembly simulation to optimize waterproofing joints in advance; in production, the curing age of GRC components is strictly controlled (no less than 28 days) to ensure strength meets standards; in the installation stage, 3D laser positioning technology keeps joint tolerances within ≤2mm; sealant application follows the "three-inspection system," with special attention to substrate preparation and application temperature (5-35°C is ideal). Notably, Qinglong's innovative "reverse drainage slope" design in the Malaysia Twin Towers project successfully solved the curtain wall drainage challenge in tropical rainy climates.

Full Life-Cycle Waterproofing Assurance System

A high-quality GRC curtain wall waterproofing system should include a long-term maintenance mechanism. Qinglong has established a "professional inspection every five years + intelligent monitoring" service system, monitoring waterproofing status in real time through embedded humidity sensors. Practice shows that scientific maintenance can extend the waterproofing life of GRC curtain walls to over 20 years. As a contributing unit to the Technical Standard for Building Applications of Glass Fibre Reinforced Cement (GRC), Qinglong consistently advocates incorporating waterproofing design into whole life-cycle building management to avoid leakage risks at the source.

Waterproofing is the lifeline of GRC curtain walls, and its technical level directly reflects a company's overall strength. With 28 years of full-chain experience, Qinglong Group has deeply integrated material innovation, design optimization, and construction control to form a distinctive GRC curtain wall waterproofing solution. In the future, with the development of UHPC/GRC composite technology, curtain wall waterproofing systems will advance toward greater durability and intelligence, safeguarding building safety. Choosing a supplier with full industry-chain capabilities is the key guarantee for achieving long-term waterproofing performance of GRC curtain walls.