GB23864-2023

Firestop material

防火封堵材料

GB 23864-2023 es una norma nacional china obligatoria vigente: Firestop material. Sector: Construcción. Enfoque: Seguridad de productos. Entrada en vigor: 1 jul 2024.

La aplicabilidad depende del alcance del producto, la vía de certificación, los avisos de la autoridad competente y las reglas de transición. Solicite una traducción o verifique la fuente antes de usar esta ficha en una decisión de cumplimiento.

Resumen de cumplimiento

Este resumen está disponible por ahora solo en inglés.

Alcance y aplicabilidad

GB 23864-2023 applies to firestop materials and firestop subassemblies used in industrial and civil buildings, structures, and facilities to seal penetration holes and construction joints. This standard is mandatory for manufacturers of firestop products entering the Chinese market. It does not apply to fire-resistant intumescent seals used inside building components or hard PVC pipe firestop collars.

Requisitos técnicos

This standard specifies comprehensive requirements for the classification, marking, and performance of firestop materials. It categorizes products by their application (holes, gaps, plastic pipes), usage location (important public buildings vs. ordinary buildings), and composition (e.g., flexible organic putty, inorganic putty, firestop bags, modules). The standard mandates strict physicochemical properties, including apparent density, compressive strength, corrosion resistance, and durability against water, oil, acids, and freeze-thaw cycles. Manufacturers must ensure their products do not contain harmful substances like asbestos. For safety performance, the standard sets criteria for combustion performance, requiring materials to meet specific fire resistance grades. For materials used in important public buildings, additional requirements for smoke toxicity and air permeability are enforced. The core of the standard is the fire resistance performance, which is classified under different fire environment conditions (building fiber fire vs. power fire). Materials are rated for fire integrity (E) or fire integrity and thermal insulation (EI) over 1h, 2h, or 3h durations. An optional hose stream test is also specified to evaluate the assembly's integrity after fire exposure.

Métodos de ensayo

- Physicochemical Tests: Methods for determining apparent density, compressive strength, bending strength, and resistance to corrosion, water, oil, and environmental cycling. - Combustion Performance Tests: Evaluated according to GB/T 8626 for ignitability and GB/T 5455 for fabric materials used in firestop bags. - Smoke Toxicity and Air Permeability: Assessed using GB/T 20285 and GB/T 7106 for materials used in critical public buildings. - Fire Resistance Tests: Conducted in a furnace following GB/T 9978.1 or XF/T 714-2007 to measure integrity and insulation limits. Includes a hose stream test to verify post-fire structural stability.

Preguntas frecuentes

What products are regulated under GB 23864-2023?

GB 23864-2023 regulates firestop materials and firestop subassemblies used to seal penetration holes, construction joints, and plastic pipe penetrations in buildings and facilities.

Are there any updates from the previous version of GB 23864?

Yes, the 2023 version introduces new classifications based on usage locations, adds requirements for smoke toxicity and air permeability, and includes a new hose stream test for evaluating post-fire integrity.

How does GB 23864-2023 classify fire resistance performance?

Fire resistance is classified by fire environment (building fiber fire or power fire) and rated for fire integrity (E) or fire integrity and thermal insulation (EI) over durations of 1, 2, or 3 hours.

The summary above provides a high-level overview of GB 23864-2023. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 23864-2023 today to access all detailed parameters, tables, and testing procedures.

Indicaciones de aplicabilidad

Tipo: Producto
CCS: C84
ICS: 13.220.50
Organismo competente: National Fire and Rescue Administration
Comité técnico: National Technical Committee on Fire Protection of Standardization Administration of China

Relaciones

Sustituye a:GB 23864-2009