What Special Designs Are Required to Achieve UHPC Fire Resistance and Key Technology Analysis

Fire resistance is a critical consideration for UHPC materials in the field of building safety, and scientific design and technological innovation are the key to breaking through this performance bottleneck.

With the widespread application of ultra-high performance concrete (UHPC) in large public buildings and landmark projects, its fire resistance has become one of the core indicators in engineering design. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group deeply understands the close connection between material performance and building safety. Through special design and key technological innovation, it continuously improves the fire resistance of UHPC, providing designers and owners with solutions that combine aesthetics with safety.

I. Special Design Logic for UHPC Fire Resistance

While UHPC material itself features a dense microstructure and high strength, targeted design is still required to achieve fire resistance goals in high-temperature environments. At the detailed design stage, Qinglong focuses on building a fire resistance system across three major dimensions: material composition optimization, component structural design, and protective layer configuration. For example, by adjusting the steel fiber content and distribution method, the mechanical properties and thermal stability of the material are balanced; special-shaped cross-section designs are adopted to improve heat dissipation efficiency of components, combined with dedicated fireproof coatings to form a composite protective layer, effectively delaying high-temperature damage to internal structures.

II. Key Technologies: Full-Chain Innovation from Materials to Processes

In terms of material research and development, Qinglong, relying on a provincial engineering technology center, has developed a UHPC formula with a low thermal conductivity coefficient. By incorporating aluminate mineral admixtures and nano-scale fireproof additives, the fire resistance limit of the material has been raised to more than 3 hours. In the production and manufacturing stage, automated material distribution and steam curing processes are adopted to ensure a uniform and dense internal structure of components and reduce cracking under high temperatures. During construction and installation, BIM technology is used to simulate temperature field distribution under fire conditions and optimize anchor node design, ensuring the structural stability of components under extreme conditions.

III. Industry Practice: Experience Accumulated from Standard Setting to Project Implementation

As a participating unit in the industry standard "General Technical Conditions for Non-Load-Bearing Ultra-High Performance Concrete (UHPC) Components", Qinglong incorporates fire resistance indicators into full product life cycle management. In benchmark projects such as the Nanjing East Road Century Plaza renovation project, its light-transmitting UHPC components, through special porous structure design and fireproof encapsulation technology, meet both architectural aesthetic requirements and the national first-class fire resistance standard. This solution that "balances function and aesthetics" has become the preferred choice for large commercial complexes, transportation hubs, and other scenarios.

Improving the fire resistance of UHPC is a deep integration of materials science and engineering technology, requiring enterprises to possess full-chain capabilities from formula development to construction implementation. Drawing on 28 years of industry experience and guided by the mission of "creating aesthetic architecture", Qinglong Group will continue to promote innovation in UHPC fire resistance technology, provide more reliable material support for building safety and design freedom, and help create modern architectural models that combine artistic value with safety assurance.