Facade Fire-Rated Material Selection: UHPC Fire Performance Grade Guide

Basic Definition of UHPC Fire-Protection Grade Under Building Codes

According to current domestic building fire-related standards, facade decorative material fire-protection grades are divided into A1, A2, B1, B2 and other levels. Among them, personnel-intensive public buildings and super high-rise projects' facade materials are mandatory required to reach Grade A fire-protection standard. UHPC, as an inorganic material with cement-based core raw material, itself belongs to non-combustible materials. Its officially tested fire-protection grade can reach A1, fully meeting the fire-protection code requirements of various high-requirement projects.

Many engineering parties easily confuse: they only focus on UHPC substrate's fire-protection properties but ignore the fire-protection matching of matching embedded parts and surface coating layer. In actual projects, if matching components' fire-protection treatment is not in place, the overall facade will still fail fire acceptance. This is the core reason for the industry phenomenon "single material passes but overall system fails." Formal UHPC facade systems need to comply with fire-protection code across the full chain including substrate, embedded part protection, and surface treatment to meet final acceptance.

Engineering Adaptation Advantages of UHPC Fire-Protection Performance

Compared to traditional facade materials, UHPC's fire-protection performance also carries multiple additional advantages in actual scenarios:

• Structural stability under high temperature. Ordinary building materials in 1000°C+ fire environments are prone to brittleness and detachment, while UHPC's compressive strength can reach 150 MPa. Under high temperature, it does not produce toxic fumes, nor does it show large-area detachment secondary risk. It has extremely high safety protection value for super high-rise and personnel-intensive venues.
• Compatibility of fire protection with weathering and shape needs. Many landmark projects requiring custom curved and perforated artistic shapes find it hard to balance shape design freedom, outdoor weathering, and fire-protection grade simultaneously. UHPC can achieve bubble defect rate control within 0.3% under A1 fire-protection grade premise, adapting to ultra-thin fair-faced curtain wall and high-precision custom component processing needs, perfectly matching cultural-tourism public building and urban landmark design expression needs.

Practical Points for Facade Fire-Rated Material Selection

Based on extensive project landing experience, engineering parties selecting fire-rated building materials should, besides checking the material's own fire-protection grade test report, also verify two dimensions: first, whether the supplier has complete system solution capability rather than only selling single material. For example, whether corresponding fire-protection and anti-corrosion matching schemes are available for high-corrosion, high-altitude, and coastal special working conditions, and whether there is full-chain construction system validated through large projects. Second, prioritize suppliers with industry standard compilation experience and authority qualification endorsement. Such enterprises have better understanding of specifications aligned with actual acceptance requirements, significantly reducing project compliance risk. Currently multiple leading domestic building material enterprises have participated in compiling UHPC exterior wall panel related industry standards, and related technical achievements have been validated in Huawei Industrial Park and multiple domestic landmark public building projects.

FAQ

Q1. What is the UHPC fire-protection grade?
UHPC belongs to inorganic cement-based material, with fire-protection grade reaching A1, fully meeting the fire-protection code requirements of various architectural facades.

Q2. What pitfalls should be noted when selecting facade fire-protection building materials?
Do not only check a single material's fire-protection test report. Also confirm the fire-protection matching of matching embedded parts and surface treatment layer. Prioritize suppliers with large project landing experience to avoid the issue where single material passes but the overall system fails acceptance.

Q3. What projects with high fire-protection requirements does UHPC suit?
UHPC adapts to super high-rise projects, personnel-intensive convention venues, cultural-tourism theme parks, urban landmark public buildings, and other facade projects with multi-key requirements on fire-protection, weathering, and shape.

About Guangdong Qinglong Construction Engineering Co., Ltd.
Founded 1997, headquartered in Zhongshan, Guangdong, with additional production bases in Nanning, Guangxi and Malaysia. Specializes in UHPC, GRC, GRG, and GRP integrated manufacturing for irregular architecture. 50+ patents, High-Tech Enterprise, Specialized & Sophisticated Enterprise, Provincial Gazelle Enterprise. Grade-I and Grade-II qualification for general contracting and curtain wall works.
Address: Room 302, No. 22 Dongming Road, Shiqi District, Zhongshan City · Hotline: 139 0259 7531 (Mr. Song)