This Standard specifies the terms and definitions, burning behavior grades, burning behavior grade criteria, burning behavior grade identification and inspection report of building materials and products.
This Standard is applicable to burning behavior classification and judgment of building materials, decoration materials and products in construction engineering.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) applies.
GB/T 2406.2 Plastics - Determination of Burning Behavior by Oxygen Index - Part 2: Ambient-temperature Test
GB/T 8408 Plastics - Determination of Burning Characteristics - Horizontal and Vertical Test
GB/T 5169.16 Fire Hazard Testing for Electric and Electronic Products-Part 16: Test Flames-50W Horizontal and Vertical Flame Test Methods
GB/T 6454 Textiles - Burning Behavior - Oxygen Index Method
GB/T 5455 Textiles - Burning Behavior - Vertical Method
GB/T 5464 Non-combustibility Test Method of Building Materials
GIB/T 5907 Fundamental Terminology of Fire Protection: Part 1
GB/T 8333 Test Method for Flammability of Rigid Cellular Plastic - Vertical Burning Method
GB/T 8626 Test Method of Flammability for Building Materials
GB/T 8627 Test Method for Density of Smoke from the Burning or Decomposition of Building Materials
GB/T 11785 Reaction to Fire Tests for Floorings - Determination of the Burning Behavior Using a Radiant Heat Source
GB/T 14402 Reaction to Fire Tests for Building Materials and Products - Determination of the Heat of Combustion
GB/T 16172 Test Method for Heat Release Rate of Building Mate
GB/T 17596 Textiles--Commercial Laundering Procedure for Textile Fabrics Prior to Flammability Testing
GB 17927.1 Upholstered furniture - Assessment of the Resistance to Ignition of Mattress and Sofa - Part 1: Smouldering Cigarette
GB/T 20284 Single Burning Item Test for Building Materials and Products
GB/T 20285 Toxic Classification of Fire Effluents Hazard for Materials
GB/T 27904 Testing Method for Fire Characteristics of Furniture and Subassemblies Exposed to Flaming Ignition Source
3 Terms and Definitions
For the purposes of this Document, the terms and definitions below and defined in GB/T 5907 apply.
3.1 Product
Building materials, composite materials or component about which information is required.
3.2 Material
The mixture of single substance or uniform distribution, such as metal, stone, wood, concrete, mineral fibre and polymer
3.3 Linear pipe thermal insulation product
Round pipeline product with insulating property, such as rubber and plastic insulating pipe and fiber glass insulating pipe
3.4 Homogeneous product
Product composed of single material or with uniform density and composition inside.
3.5 Non-homogeneous product
The product not in accordance with the definition of homogeneous product and composed of one or more categories of substantial or non-substantial component(s)
3.6 Substantial component
Substantial substance of non-homogeneous product, such as the material with single-layer surface density ≥1.0kg/m2 or single-layer thickness ≥1.0mm
3.7 Non-substantial component
Secondary structured substance of non-homogeneous product, such as the materials with single-layer surface density<1.0 kg/m2 and single-layer thickness <1.0 mm. Directly adjacent two-layer or multi-layer non-substantial components (no substantial component between them) may be regard as a non-substantial component where the combination meet the requirements of non-substantial components.
3.8 Internal non-substantial component
Non-substantial component with the two sides contacting a kind of substantial components at least
3.9 External non-substantial component
Non-substantial component with one not contacting substantial component(s)
3.10 Flooring
Materials or products that may be laid on the floor
3.11 Substrate
A category of products in direct contact with the backside (or bottom) of building products, such as concrete wall concrete wall surface
3.12 Standard substrate
Product that may represent substrate for practical applications
3.13 Flaming droplets/particles
Substance or particles separated from sample during the process of combustion test
3.14 Critical heat flux
CHF
Heat radiation flux at the flame quenching position or that from flame propagated to the farthest at 30min of the test.
