How to classify the thermal insulation and fire protection grades?

The classification of combustion performance is that the fire resistance of buildings depends on the fire resistance of building components. In China, building materials are divided into four categories according to their combustion performance: incombustible materials (Grade A), flame retardant materials (Grade B 1), combustible materials (Grade B2) and combustible materials (Grade B3).

The fire performance of building materials is generally expressed by the combustion performance of building materials. The combustibility of building materials refers to all physical and chemical changes that occur when they burn or meet fire.

External wall thermal insulation material belongs to a kind of building materials. The combustion performance grades and grading standards of flat building materials and products are shown in the following table: in the table, when Grade A meets A 1, Grade B and C are Grade B 1, and Grade D and E are Grade B2.

The future development direction of building external insulation in China is:

1, we must adhere to the road of building energy conservation and fire safety.

2. Adhere to the technical approach of combining organic materials with inorganic materials.

3. Adhere to the technical route of combining thermal insulation materials with fire prevention structures.

4. Adhere to the development path that meets the requirements of safety, environmental protection and energy conservation.

The advantages of high fire rating are:

The higher the fire rating of the floor, the higher the safety. When the cement base surface is treated with "concrete sealing curing agent", the generated silica sol substance belongs to incombustible substance, which will not change the inorganic properties of the ground, thus ensuring the fire resistance of the finished floor.

In addition, the curing agent material itself is also a non-combustible substance. When the material is poured on the ground and tested with a lighter, it is obvious that there will be no burning phenomenon.

The fire protection rating of the cured floor is as high as A 1, that is, non-combustible building materials, single inorganic non-combustible, non-combustible and non-combustible. For welding, sports and other industrial production involving high temperature and open flame, laying solidified floor can better ensure the safety of operation.