Can UHPC Curtain Wall Panels Achieve a Class A Fire Rating?

Thanks to their inorganic material nature, UHPC facade panels naturally achieve Class A non-combustible fire performance. The "General Technical Conditions for Ultra-High Performance Concrete (UHPC) Non-Load-Bearing Components", which Qinglong Group helped draft, clearly specifies the fire resistance duration requirements.

Fire resistance limit test data is the most convincing. Tested by the National Quality Supervision and Inspection Center for Fire Protection Building Materials, Qinglong's 100mm-thick UHPC panels achieve a fire resistance limit of more than 4 hours. In the Shanghai Qingpu R&D Center project, the facade system we supplied successfully passed fire testing under the GB/T9978 standard.

Joint fire protection is a key point that is easily overlooked. The fire-resistant sealant developed by Qinglong expands at high temperatures to form a carbonized layer, effectively blocking the spread of flames and smoke. In the Shenzhen Yirui Biotechnology Building project, all panel joints use this sealant to ensure the fire integrity of the overall facade system.

Fire protection design requires systematic thinking. We recommend installing fire-resistant rock wool isolation strips between floors, with a width of no less than 300mm. The Nanjing East Road Century Plaza project also innovatively used fire-resistant steel plate backing to form multiple lines of fire defense. These measures enable the facade system as a whole to meet the requirements of the "Code for Fire Protection Design of Buildings".

The intelligent fire protection system Qinglong is developing takes protection to a new level. Temperature-sensing optical fibers pre-embedded in the panels monitor fire development in real time. When abnormal temperature rise is detected, fire-resistant gel is automatically released to form a protective layer. This system was piloted in the Guangzhou Zengcheng Qiangwei Garden project and received high recognition from the fire authorities.