Can UHPC Curtain Wall Panels Achieve a Class A Fire Rating? An Empirical Study on the Fire Performance of Qinglong UHPC

UHPC curtain wall panels meet the Class A non-combustible material standard for fire performance, with a fire resistance limit of up to 3 hours. Tested by the National Quality Inspection and Testing Center for Fireproof Building Materials, the combustion performance of Qinglong UHPC panels complies with GB8624 Class A (A1) requirements: they do not burn when exposed to fire and produce no toxic smoke, fully meeting code requirements.

In terms of fire-resistant construction, UHPC panels achieve improved fire performance through optimized mix proportions: polypropylene fibers (melting point 160℃) are added, which melt at high temperatures to form pressure-relief channels; material density is controlled at ≥2200kg/m³ to increase thermal inertia; panel thickness is ≥20mm to ensure fire integrity. In a super high-rise project, the UHPC curtain wall system passed a 3-hour fire resistance limit test, providing valuable time for occupant evacuation and firefighting rescue.

Material Fire Performance

Class A non-combustible material with heat of combustion ≤2MJ/kg; smoke toxicity class t0; these properties ensure safety.

Fire Resistance Testing

Standard panel thickness of 20mm achieves a fire resistance limit of ≥2 hours; thickened to 30mm, it can reach 3 hours; these tests verify performance.

Fire-Resistant Construction Measures

Fire-resistant seals are installed to block cavities; panel joints are filled with fire-resistant sealant; these measures enhance fire protection.

System Fire Certification

Passed fire testing of the complete curtain wall system; authoritative test reports are provided; these certifications demonstrate reliability.

Fire safety is of vital importance. Qinglong UHPC products deliver outstanding fire performance and have passed authoritative certification.